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Publications (gub1@ornl.gov)

1.      Lin, H.; Hurt Jr, R. A.; Johs, A.; Parks, J. M.; Morrell-Falvey, J. L.; Liang, L.; Elias, D. A.; Gu, B. Unexpected effects of gene deletion on mercury interactions with the methylation-deficient mutant ΔhgcAB. Environ. Sci. Technol. Lett. 2014, 1, 271−276.  

2.      Donovan, P. M.; Blum, J. D.; demers, J. D.; Gu, B.; Brooks, S. C.; Peryam, J. Identification of multiple mercury sources to stream sediments near Oak Ridge, TN, USA. Environ. Sci. Technol. 2014, 48, 3666-3674.  

3.      Gu, B., B. Mishra, C. Miller, W. Wang, B. Lai, K. M. Kemner, and L. Liang. (2014) X-ray fluorescence mapping of mercury on suspended mineral particles and diatoms in a contaminated freshwater system. Biogeosci. 11, 7521-7540.

4.      B. Rao, C. Simpson, H. Lin, L. Liang, B. Gu. Determination of thiol functional groups on bacteria and natural organic matter in environmental systems. Talanta. 2014, 119, 240-247.

5.      Wang, W.; Foster, C. M.; Morrell-Falvey, J. L.; Nallathamby, P. D.; Mortensen, N. P.; Doktycz, M. J.; Gu, B.; Retterer, S. T. Volume labeling with alexa fluor dyes and surface functionalization of highly sensitive fluorescent silica (SiO2) nanoparticles. Nanoscale. 2013, 5 (21), 10369-10375.

6.      Hu, H.; H. Lin, W. Zheng, S. J. Tomanicek, A. Johs, X. Feng, D. A. Elias, L. Liang, B. Gu. (2013) Oxidation and methylation of dissolved elemental mercury by anaerobic bacteria. Nature Geosci. 6, 751-754.

7.      Hu, H.; H. Lin, W. Zheng, B. Rao, X. Feng, L. Liang, D. A. Elias, B. Gu. (2013) Mercury reduction and cell-surface adsorption by Geobacter sulfurreducens PCA. Environ. Sci. Technol. 47, 10922-10930.

8.      Zheng, W., H. Lin, B. F. Mann, L. Liang, and B. Gu. (2013)  Oxidation of dissolved elemental mercury by thiol compounds under anoxic conditions. Environ. Sci. Technol. 47, 12827−12834.

9.      Riccardi, D.; Guo, H. B.; Parks, J. M.; Gu, B.; Summers, A.; Miller, S. M.; Liang, L.; Smith, J. C. (2013) Why mercury prefers soft ligands. J. Phys. Chem. Lett. 4, 2317-2322.

10.  Tang, G.; Luo, W.; Watson, D. B.; Brooks, S. C.; Gu, B. (2013) Prediction of aluminum, uranium, and co-contaminants precipitation and adsorption during titration of acidic sediments. Environ. Sci. Technol. 47, 5787-5793.

11.  Riccardi, D.; Guo, H. B.; Parks, J. M.; Gu, B.; Miller, S. M.; Liang, L.; Smith, J. C. (2013) Cluster-continuum calculations of hydration free energies of anions and group 12 divalent cations. J. Chem. Theory Comp. 9, 555-569.

12.  Miller, C.; Liang, L.; Gu, B. (2012). Competitive ligand exchange reveals mercury reactivity change with dissolved organic matter (DOM). Environ Chem  9, 495-501.

13.  Rao, B.; Estrada, N.; McGee, S.; Mangold, J.; Gu, B.; Jackson, W. A. (2012) Perchlorate production by photodecomposition of aqueous chlorine solutions. Environ. Sci. Technol. 46, 11635-11643.

14.  Rao, B.; Wang, W.; Cai, Q. S.; Anderson, T.; Gu, B. Photochemical transformation of insensitive munitions‒2,4-dinitroanisole.  Sci. Total Environ. 2013, 443:692-699. 

15.  Guo, H. B.; He, F.; Gu, B.; Liang, L.; Smith, J. C. (2012) Time-dependent density functional theory assessment of uv absorption of benzoic acid derivatives. J. Phys. Chem. A 116, 11870-11879. 

16.  Cui, J.; Wang, W.; Gu, B.; Liang, L. (2012) A combined physical-chemical polymerization process for fabrication of nanoparticle-hydrogel sensing materials. Macromolecules 45, 8382-8386. 

17.  Sathyamurthy, S., E. Tuncer, K. L. More, B. Gu, I. Sauers, M. P. Paranthaman. (2012). Colloidal synthesis of BaF2 nanoparticles and their application as fillers in polymer nanocomposites. Applied Physics A - Materials Science & Processing. 106, 661-667.

18.  Zheng, W.; Liang, L.; Gu, B. (2012) Mercury reduction and oxidation by reduced natural organic matter in anoxic environments. Environ. Sci. Technol. 46, 292-299. 

19.  Suresh A. K., D. A. Pelletier, W. Wang, J. L. Morrell-Falvey, B. Gu and M. J. Doktycz. 2012. Cytotoxicity induced by engineered silver nanocrystallites is dependent on surface coatings and cell types.  Langmuir, 28 (5), 27272735.

20.  Hsueh, C. H., Lin, C. H., Li, J. H., Hatab, N. A., Gu, B. 2012.  Resonance modes, cavity field enhancements, and long-range collective photonic effects in periodic bowtie nanostructures. Optics Express, 19 (20), 19660-19667.

21.  He F., Zheng W., Liang L., and Gu B. (2012) Photochemical reduction of mercury affected by functional groups and structural arrangements of organic ligands. Sci. Total Environ. 416, 429-435.

  1. Li, Y.; Wang, W.; Qiu, X.; Song, L.; Meyer, H. M.; Paranthaman, M. P.; Eres, G.; Zhang, Z.; Gu, B. (2011) Comparing Cr, and N only doping with (Cr,N)-codoping for enhancing visible light reactivity of TiO2. Appl. Catalysis B. Environ. 110, 148-153.
  2. Gu, B., Y. Bian, C. L. Miller, W. Dong, X. Jiang, and L. Liang. 2011. Mercury reduction and complexation by natural organic matter in anoxic environments. Proceedings of the National Academy of Science USA 108, 1479-1483.
  3. Schaefer, J. K.; Rocks, S. S.; Zheng, W.; Liang, L.; Gu, B.; Morel, F. M. M. 2011. Active transport, substrate specificity, and methylation of Hg(II) in anaerobic bacteria. Proceedings of the National Academy of Science USA. 108 (21), 8714-8719.
  4. Gu, B.; Dong, W.; Liang, L.; Wall, N. A. 2011. Dissolution of technetium(IV) oxide by natural and synthetic organic ligands under both reducing and oxidizing conditions. Environ. Sci. Technol. 45, 4771-4777.
  5. Xu, X.; Seal, K.; Xu, X.; Ivanov, I.; Hsueh, C. H.; Hatab, N. A.; Gu, B.; Zhang, Z.; Shen, J. 2011. High tunability of the SERS response with a metal-multiferroic composite. Nano Letters 11, 1265-1269.
  6. Luo, W. and Gu, B. 2011. Dissolution of uranium-bearing minerals and mobilization of uranium by organic ligands in a biologically reduced sediment. Environ. Sci. Technol. 45, 2994–2999.
  7. Dong, W.; Bian, Y.; Liang, L.; Gu, B. Binding constants of mercury and dissolved organic matter determined by a modified ion exchange technique. Environ. Sci. Technol. 2011, 45, 3576–3583.
  8. Suresh A. K., Pelletier, D. A., W. Wang, M. L. Broich, J. W. Moon, B. Gu, D. P. Allison, D. C. Joy, T. P. Phelps, and M. J. Doktycz.  2011. Biofabrication of discrete spherical gold nanoparticles using the metal-reducing bacterium Shewanella oneidensis.  Acta Biomaterialia 7 (5), 2148-2152.
  9. Hatab, N. A., Hsueh, C. H., Gaddis, A., Retterer, S. T. Li, J. H., Eres, G., Zhang, Z., Gu, B.  Free-standing optical gold bowtie nanoantenna with variable gap size for enhanced Raman spectroscopy.  Nano Letters, 2010, 10, 4952-4955.

31.  Hatab, N. A., Rouleau, C. M., Retterer, S. T., Eres, G., Hatzinger, P. B., Gu, B.  An integrated portable Raman sensor with nanofabricated gold bowtie array substrates for energetics detection.  Analyst, 2011, 136, 1697-1702.

  1. Boggs, M. A.; Minton, T.; Lomasney, S.; Islam, M. R.; Dong, W.; Gu, B.; Wall, N. A. Interactions of Tc(IV) with humic substances. Environ. Sci. Technol. 2011, 45, 2718-2724.
  2. Van Nostrand, J. D.; Wu, L.; Wu, W.; Huang, Z.; Gentry, T. J.; Deng, Y.; Carley, J.; Carroll, S.; He, Z.; Gu, B.; Luo, J.; Criddle, C. S.; Watson, D.; Jardine, P. M.; Marsh, T. L.; Tiedje, J. M.; Hazen, T. C.; Zhou, J.  Dynamics of microbial community composition and function during in situ bioremediation of a uranium-contaminated aquifer. Appl. Environ. Microbiol. 2011, 77 (11), 3860-3869. 

34.  Vishnivetskaya, T. A., J. Mosher, A. V. Palumbo, Z. Yang, M. Podar, S. Brown, S. C. Brooks, B. Gu, G. Southworth, M. M. Drake, C. C. Brandt, and D. A. Elias. (2011) Mercury and other heavy metals influence bacterial community structure in contaminated Tennessee streams. Appl. Environ. Microbiol. 77:302-311.

35.  Senevirathna, W. U., H. Zhang, B. Gu. 2011. Effect of carboxylic and thiol ligands (oxalate, cysteine) on the kinetics of desorption of Hg(II) from kaolinite. Water, Air, Soil Poll.  215, 573-584.

36.  Gu, B., Böhlke, J.K., Sturchio, N.C., Hatzinger, P.B., Jackson, W.A., Beloso, A.D., Heraty, L.J., Bian, Y., Jiang, X., and Brown, G.M. (2011) Ch. 3. Applications of selective ion exchange for perchlorate removal, recovery, and environmental forensics. In SenGupta, A. K., ed., Ion Exchange and Solvent Extraction: A Series of Advances: 20. Taylor & Francis. p. 117 – 144.

37.  Gong, R.; Lu, C.; Wu, W. M.; Cheng, H.; Gu, B.; Watson, D.; Jardine, P. M.; Brooks, S. C.; Criddle, C. S.; Kitanidis, P. K.; Luo, J. (2011) Estimating reaction rate coefficients within a travel-time modeling framework. Ground Water. 49, 209-218.

  1. Hatab, N. A.; Eres, G.; Hatzinger, P. B.; Gu, B., Detection and analysis of cyclotrimethylene-trinitramine (RDX) in environmental samples by surface enhanced Raman spectroscopy. J. Raman Spectr. 2010, 41, 1131-1136.
  2. Pan, H.; Gu, B.; Eres, G.; Zhang, Z. (2010) Ab initio study on noncompensated CrO codoping of GaN for enhanced solar energy conversion. J. Chem. Phys. 132(10), 104501.

40.  Moon, J-W, Rawn, C. J.; Rondinone, A. J.; Wang, W.; Vali, H.; Yeary, L. W.; Love, L. L.; Kirkham, M. J.; Gu, B.; Phelps, T. J. (2010) Crystallite sizes and lattice constants of nano-biomagnetite particles, J. Nanosci. Nanotechnol. J. Nanosci. Nanotechnol. 10, 8298-8306.

41.  Wang W., Howe J., Li Y., Qiu X. F., Joy D. C., Paranthaman M. P., Doktycz M. J., and Gu B. (2010) A surfactant and template-free route for synthesizing ceria nanocrystals with tunable morphologies. J. Mater. Chem. 20(36), 7776-7781.

42.  Xu, M.; Wu, W.; Wu, L.; He, Z.; Van Nostrand, J. D.; Deng, Y.; Luo, J.; Carley, J.; Ginder-Vogel, M.; Gentry, T. J.; Gu, B.; Watson, D.; Jardine, P. M.; Marsh, T. L.; Tiedje, J. M.; Hazen, T. C.; Criddle, C.; Zhou, J.  (2010) Responses of microbial community functional structures to pilot-scale uranium in situ bioremediation.  ISME  4, 1060-1070.

43.  Pelletier, D. A. W. Wang, B. Gu, Suresh A. K., Moon J. W., D. P. Allison, D. C. Joy, T. P. Phelps, and M. J. Doktycz. Effects of engineered cerium oxide nanoparticles on bacterial growth and viability. Appl. Environ. Microbiol. 2010, 76, 7981-7989.

44.  Gong, R., Lu, C., Wu., W.-M., Cheng, H., Gu, B., Watson, D.B., Griddle, C.S., Kitanidis, P.K., Brooks, S.C., Jardine, P.M., Luo, J. (2010) Estimating kinetic mass transfer by resting-period measurements in flow-interruption tracer tests. J. Contam. Hydrol. 117, 37-45.

45.  Boggs, M. A.; Dong, W.; Wall, N. A.; Gu, B. Complexation of Tc(IV) with acetate at varying ionic strengths. Radiochim. Acta  2010, 98, 1-5.

46.  Suresh A. K., Wang W., Pelletier D. A., Moon J. W., Gu B., Mortensen N. P., Allison D. P., Joy D. C., Phelps T. P., and Doktycz M. J. (2010) Silver nanocrystallites: Facile biofabrication using Shewanella oneidensis, and an evaluation of their comparative toxicity on Gram-negative and Gram-positive bacteria. Environ. Sci. Technol. 44, 5210-5215.

47.  Jackson W. A., Böhlke J. K., Gu B., Hatzinger P. B., and Sturchio N. C. (2010) Isotopic composition and origin of indigenous natural perchlorate and co-occurring nitrate in the southwestern United States. Environ. Sci. Technol. 44, 4869–4876.

48.  Zhang F., Parker J. C., Brooks S. C., Watson D. B., Jardine P. M., and Gu B. (2010) Prediction of uranium and technetium sorption during titration of contaminated acidic groundwater. J. Haz. Mater. 178, 42-48.

49.  Boonchayaanant, A.; Gu, B.; Wang, W.; Ortiz, M. E.; Criddle, C. (2010) Can microbially-generated hydrogen sulfide account for the rates of U(VI) reduction by a sulfate-reducing bacterium? Biodegradation, 21, 81–95.

50.  Sturchio, N. C., J. K. Böhlke, B. Gu, P. B. Hatzinger, and W. A. Jackson. 2010. Isotopic tracing of perchlorate in the environment (Ch. 28). In Handbook of Environmental Isotope Geochemistry.  M. Baskaran, Ed. Springer-Verlag.

  1. Gu, B. and J. D. Coates. 2006. Perchlorate Environmental Occurrence, Interactions and Treatment, Springer, New York.
  2. Miller, C.; Southworth, G.; Brooks, S. C.; Liang, L.; Gu, B. (2009)  Kinetic controls on the complexation between mercury and dissolved organic matter in a contaminated environment. Environ. Sci. Technol. 43, 8548-8553.
  3. Dong, W. M.; Gu, B.; Southworth, G.; Brooks, S. C.; Liang, L. (2009)  Determining roles of dissolved organic matter in the aqueous speciation of mercury and methylmercury in a contaminated ecosystem. Environ. Chem. 7, 94–102.
  4. Zhu W., Qiu X., Lancu V., Chen X., Pan H., Wang W., Dimitrijevic N., Rajh T., Meyer H. M., Paranthaman M. P., Stocks M., Weitering H., Gu B., Eres G., and Zhang Z. (2009) Bandgap narrowing of titanium oxide semiconductors by non-compensated anion-cation codoping for enhanced visible-light photoactivity. Phys. Rev. Lett. 103, 226401.
  5. Wang, W., Li, Z., Gu, B., Zhang, Z. & Xu, H. (2009) Ag@SiO2 core-shell nanoparticles for probing spatial distribution of electromagnetic field enhancement via surface-enhanced Raman scattering. ACS Nano, 3, 3493–3496.
  6. Pan H., Qiu X., Ivanov I. N., Meyer H. M., Zhu W., Wang W., Paranthaman M. P., Zhang Z., Eres G., and Gu B. (2009) Fabrication and characterization of brookite-rich, visible light-active TiO2 films. Appl. Catalysis B. Environ., 93, 90-95. 
  7. Pan H., Gu, B., Zhang Z. (2009) Phase-dependent photocatalytic ability of TiO2: a First-Principles study. J. Chem. Theory Comput. 5, 3074-3078.
  8. Luo W., Kelly S. D., Kemner K. M., Watson D., Zhou J., Jardine P. M., and Gu B. (2009) Sequestering uranium and technetium through co-precipitation with aluminum in a contaminated acidic sediment. Environ. Sci. Technol. 43, 7516–7522.
  9. Sturchio, N. C.; Caffee, M.; Beloso Jr, A. D.; Heraty, L. J.; Bohlke, J. K.; Hatzinger, P. B.; Jackson, A.; Gu, B.; Heikoop, J. M.; Dale, M. (2009) Chlorine-36 as a tracer of perchlorate origin. Environ. Sci. Technol. 43(18), 6934-6938.
  10. Van Nostrand, J. D.; Wu, W.; Wu, L.; Deng, Y.; Carley, J.; Carroll, S.; He, Z.; Gu, B.; Luo, J.; Criddle, C.; Watson, D.; Jardine, P. M.; Marsh, T. L.; Tiedje, J. M.; Hazen, T. C.; Zhou, J.  (2009) GeoChip-based analysis of functional microbial communities during the reoxidation of a bioreduced uranium-contaminated aquifer. Environ. Microbiol. 11, 2611-2626.
  11. Böhlke, J. K.; Hatzinger, P. B.; Sturchio, N. C.; Gu, B.; Abbene, I.; Mroczkowski, S. J. (2009) Atacama perchlorate as an agricultural contaminant in groundwater: Isotopic and chronologic evidence from Long Island, New York. Environ. Sci. Technol. 43, 5619-5625.
  12. Hu Z., Lai P., Bhuiyan M. S., Tsouris C., Gu B., and Paranthaman P. (2009) Synthesis and characterization of anodized titanium-oxide nanotube arrays. J. Mater. Sci., 44, 2820-2827.
  13. Peterson J. W., O’Meara T. A., Seymour M. D., Wang W., and Gu B. (2009) Sorption mechanisms of cephapirin, a veterinary antibiotic, onto quartz and feldspar minerals as detected by Raman spectroscopy. Environ. Poll. 157, 1849-1856.
  14. Hatzinger P. B., Böhlke J. K., Sturchio N. C., Gu B., Heraty L. J., and Borden R. C. (2009) Fractionation of stable isotopes in perchlorate and nitrate during in situ biodegradation in a sandy aquifer. Environ. Chem. 6, 44-52.
  15. Luo W. and Gu B. (2009) Dissolution and mobilization of uranium in a reduced sediment by natural humic substances under anaerobic conditions. Environ. Sci. Technol. 43, 152-156.
  16. Gu, B.; Ruan, C.; Wang, W. Perchlorate detection at nanomolar concentrations by surface-enhanced raman scattering. Appl. Spectr. 2009, 63, 98-102.
  17. Yu, K.; Grabinski, C.; Schrand, A. M.; Murdock, R.; Wang, W.; Gu, B.; Schlager, J.; Hussain, S. Toxicity of amorphous silica nanoparticles in mouse keratinocytes. J. Nanopart. Res. 2009, 11, 15-24.
  18. Zhang, F.; Luo, W.; Parker, J. C.; Spalding, B. P.; Brooks, S. C.; Watson, D. B.; Jardine, P. M.; Gu, B. Geochemical modeling of reactions and partitioning of trace metals and radionuclides during titration of contaminated acidic sediments. Environ. Sci. Technol. 2008, 42, 8007-8013.
  19. Wang, W.; Liang, L.; Johs, A.; Gu, B. Thin films of uniform hematite nanoparticles: controls on surface hydrophobicity and self-assembly. J. Mater. Chem. 2008, 18, 5770-5775.
  20. Cardenas, E.; Wu, W.; Leigh, M. B.; Carley, J.; Caroll, S.; Gentry, T.; Luo, J.; Watson, D.; Gu, B.; Ginder-Vogel, M. A.;  Kitanidis, P. K.; Jardine, P. M.; Zhou, J.; Criddle, C.; Marsh, T.; Tiedje, J. 2008. Microbial communities in contaminated sediments associated with bioremediation of uranium to submicromolar levels. Appl. Environ. Microbiol. 74, 3718-3729.
  21. Wang, W.; Howe, J.; Gu, B. 2008. Structure and morphology evolution of hematite (a-Fe2O3) nanoparticles in forced hydrolysis of ferric chloride. J. Phys. Chem. C, 112:9203-9208.
  22. Custelcean, R.; Jiang, D.; Hay, B. P.; Luo, W.; Gu, B. 2008. Hydrogen-bonded helices for anion binding and separation. Crystal Growth Design. 8, 1909-1915.
  23. Phillips, D. H., B. Gu, D. B. Watson, C. S. Parmele. 2008. Uranium removal from contaminated groundwater by synthetic resins. Water Research 42:260-268.
  24. Ruan, C. M.; Wang, W.; Gu, B. 2007.  Determining uranium in environmental samples by surface-enhanced Raman spectroscopy. Anal. Chim. Acta. 605, 80-86.
  25. Luo, W.; Zhou, J.; Wu, W.; Yan, T.; Criddle, C.; Jardine, P. M.; Gu, B. 2007. Electron donor effects on bioreduction rates of uranium and microbial community under varying bicarbonate and sulfate conditions. Appl. Microbiol. Biotech. 77, 713-721.
  26. Gu, B. H.; Brown, G. M.; Chiang, C. C. Treatment of perchlorate-contaminated groundwater using highly selective, regenerable ion-exchange technologies. Environ. Sci. Technol. 2007, 41, 6277-6282.
  27. Wang, W.; Gu, B.; Liang, L. 2007. Effect of anionic surfactants on synthesis and self-assembling of silica colloidal nanoparticles. J. Coll. . Inter. Sci. 313, 169-173.
  28. Wu, W.; Carley, J.; Luo, J.; Ginder-Vogel, M. A.; Cardenas, E.; Leigh, M. B.; Hwang, C.; Kelly, S. D.; Ruan, C.; Wu, L.; Nostrand, J. V.; Gentry, T.; Lowe, K.; Mehlhorn, T. L.; Caroll, S.; Luo, W.; Fields, M. W.; Gu, B.; Watson, D.; Kemner, K.; Marsh, T.; Tiedje, J.; Zhou, J.; Fendorf, S.; Kitanidis, P. K.; Jardine, P. M.; Criddle, C.  2007. In situ bioreduction of uranium (VI) to submicromolar levels and reoxidation by dissolved oxygen. Environ. Sci. Technol. 41, 5716-5723.
  29. Ruan C. M., Gu B., Eres G., Wang W., and Zhang Z. (2007) Controlled fabrication of nanopillar array substrates for surface-enhanced Raman spectroscopy. Langmuir, 23, 5757-5760.
  30. Ruan C. M., Wang W., and Gu B. (2007) Single-molecule detection of thionine on aggregated gold nanoparticles by surface enhanced Raman scattering. J. Raman Spectr. 38, 568-573.
  31. Luo J., Wu W. M., Carley J., Ruan C., Gu B., Jardine P. M., Criddle C., and Kitanidis P. K. (2007) Hydraulic performance analysis of a multiple injection-extraction well system. J. Hydrol., 336, 294-302.
  32. Gu, B.; Ruan, C. 2007. Determination of technetium and its speciation by surface enhanced Raman spectroscopy. Anal. Chem, 79, 2341-2345.
  33. He Z., Gentry T., Schadt C. W., Wu L., Liebich J., Chong S. C., Huang Z. J., Wu W., Gu B., Jardine P. M., Criddle C., and Zhou J. (2007) Geochip: a comprehensive microarray for investigating biogeochemical, ecological, and environmental processes. ISME, 1, 67-77.
  34. Johs A., Liang L., Gu B., Ankner J.F., Wang W. 2008 Application of neutron reflectometry for studies of biomolecular structures and functions at interfaces. In “Neutron Application in Earth, Energy, and Environmental Sciences”, Liang, Rinaldi, Schober (Eds), Springer.
  35. Kim, S. H., Kim, K., Gu, B., Lee, J., Wang, W., and Park, K. H. (2006). Transport of ferrihydrite colloids in packed quartz sand media. J. Miner. Soc. Korea 19(4), 231-238.
  36. Zhao, K.; Xu, H.; Gu, B.; Zhang, Z. 2006. One-dimensional arrays of nanoshell dimers for single molecule spectroscopy via surface-enhanced Raman scattering. J. Chem. Phys. 125, 081102.
  37. Bao, L.L., H. Yan, B. Gu, and S. Dai. 2006. Surface-enhanced Raman scattering of uranyl-humic complexes using a silver-doped sol-gel substrate. In Nuclear Waste Management: Accomplishment of the Environmental Management Science Program. P. W. Wang and T. Zachry, Ed. ACS Symp. Ser. No. 943, American Chemcial Society, Washington DC.
  38. Wu, W., Carley, J., Fienen, M., Mehlhorn, T. L., Lowe, K., Nyman, J., Luo, J., Genetile, M., Rajan, R., Wagner, D., Hickey, R., Gu, B., Watson, D., Cirpka, O. A., Kitanidis, P. K., Jardine, P. M., Criddle, C. 2006. Pilot-scale in situ bioremediation of uranium in a highly contaminated aquifer I: conditioning of a treatment zone. Environ. Sci. Technol. 40:3978-3985.
  39. Wu, W., Carley, J., Gentry, T., Ginder-Vogel, M. A., Fienen, M., Mehlhorn, T. L., Yan, H., Caroll, S., Page, M. N., Nyman, J., Luo, J., Genetile, M., Fields, M. W., Hickey, R., Gu, B., Watson, D., Cirpka, O. A., Zhou, J., Fendorf, S., Kitanidis, P. K., Jardine, P. M., Criddle, C. 2006. Pilot-scale in situ bioremediation of uranium in a highly contaminated aquifer II: Reduction of U(VI) and geochemical control of U(VI) bioavailability. Environ. Sci. Technol. 40:3986-3995.
  40. Ruan, C. M., Wang, W., Gu, B. 2006. Detection of alkaline phosphatase using surface enhanced Raman spectroscopy. Anal. Chem., 78:3379-3384.
  41. Wang, W., Ruan, C. M., Gu, B. 2006. Development of gold-silica composite nanoparticle substrates for perchlorate detection by surface-enhanced Raman spectroscopy. Anal. Chim. Acta. 567,121-126.
  42. Ruan, C. M., Wang, W., Gu, B. 2006. Surface-enhanced Raman scattering for perchlorate detection using cystamine-modified gold nanoparticles. Anal. Chim. Acta. 567,114-120.
  43. Böhlke, J. K., Sturchio, N. C., Gu, B., Horita, J., Brown, G. M., Jackson, W. A., Batista, J. R. 2005. Perchlorate isotope forensics. Anal. Chem. 77, 7838-7842.
  44. Wang, W. and B. Gu 2005. New surface-enhanced Raman spectroscopy substrates via self-assembly of silver nanoparticles on surface functionalized glass for perchlorate detection. Appl. Spectr. 59:1509-1515.
  45. Wang, W.; Gu, B. 2005. Self-assembly of Two- and Three-Dimensional Particle Arrays by Manipulating Hydrophobicity of Silica Nanoparticles, J. Phys. Chem. B, 109 (47), 22175 -22180.
  46. Gu, B. and Brown G. M. 2006. Field demonstration using highly selective, regenerable ion exchange, and perchlorate destruction technologies for water treatment. In Perchlorate Environmental Occurrence, Interactions, and Treatment (ed. B. Gu and J. D. Coates), Springer: New York.  p253-278.
  47. Gu, B. and Brown G. M. 2006. Recent Advances in Ion Exchange for Perchlorate Treatment, Recovery and Destruction. In Perchlorate Environmental Occurrence, Interactions, and Treatment (ed. B. Gu and J. D. Coates), Springer: New York.  p209-252.
  48. Gu, B., Bonnesen P. V., Sloop F. V., and Brown G. M. 2005. Titanium catalyzed perchlorate reduction and applications. In Perchlorate Environmental Occurrence, Interactions, and Treatment (ed. B. Gu and J. D. Coates), Springer: New York.  p373-388.
  49. Sturchio, N. C., Böhlke, J. K., Gu, B., Horita, J., Brown, G. M., A. D. Beloso, J., Hatzinger, P. B., Jackson, W. A., Batista, J. R. 2005. Stable isotopic compositions of chlorine and oxygen in synthetic and natural perchlorates. In Perchlorate Environmental Occurrence, Interactions, and Treatment; Gu, B., Coates, J. D., Eds.; Springer: New York.  p93-110.
  50. Gu, B.; Wu, W.; Ginder-Vogel, M. A.; Yan, H.; Fields, M. W.; Zhou, J.; Fendorf, S.; Jardine, P. M.; Criddle, C. 2005. Bioreduction of uranium in a contaminated soil column. Environ. Sci. Technol. 39:4841-4847.
  51. Gu, B.; Yan, H.; Zhou, P.; Watson, D.; Park, M.; Istok, J. D. Humics impact uranium bioreduction and oxidation. Environ. Sci. Technol. 2005, 39:5268-5275.
  52. Zhou P. and Gu B. 2005. Extraction of oxidized and reduced forms of uranium from contaminated soils: the effects of carbonate concentration and pH. Environ. Sci. Technol. 39:4435-4440.
  53. Wu, W., B. Gu, M.W. Fields, M. Genetile, Y. Ku, H. Yan, S. Tiquias, J. Nyman, J. Zhou, P.M. Jardine, and C. Criddle. 2005. Uranium(VI) reduction by denitrifying biomass. Bioremed. J. 9:49-61.
  54. Kim, K., N. Rajmohan, H. J. Kim, S. H. Kim, G. S. Hwang, S. T. Yun, B. Gu, M. J. Cho, and S. H. Lee. 2005. Evaluation of geochemical processes affecting groundwater chemistry based on mass balance approach: A case study in Namwon, Korea. Geochem. J. 39:357-369.
  55. Delapp, R.C., E.J. LeBoeuf, J. Chen, and B. Gu. 2005. Advanced thermal characterization of fractionated natural organic matter. J. Environ. Qual.  34:842-853.
  56. Gu, B., Y. K. Ku, and G. M. Brown. 2005. Sorption and desorption of perchlorate and U(VI) by strong-base anion-exchange resins. Environ. Sci. Technol. 39, 901-907.
  57. Zhou, P., H. Yan, and B. Gu. 2005. Competitive complexation of metal ions with humic substances. Chemosphere. 58:1327-1337.
  58. Gu, B., J. Tio, W. Wang, Y. Ku, and S. Dai. 2004. Raman spectroscopic detection for perchlorate at low concentrations. Applied Spect. 58:741-744.
  59. Gu, B., Y. K. Ku, and P. M. Jardine. 2004. Sorption and binary exchange of nitrate, sulfate, and uranium on an anion-exchange resin. Environ. Sci. Technol. 38:3184-3188.
  60. Shin W. T., Garanzuay, X., Yiacoumi, S., Tsouris, C., Gu, B., and Mahinthakumar, G. (2004) Kinetics of soil ozonation: an experimental and numerical investigation. J. Contam. Hydr. 72, 227-243.
  61. Bao, H. and B. Gu. 2004. Natural perchlorate has its unique oxygen Isotope signature. Environ. Sci. Technol. 38:5073-5077.
  62. Wang, W. and B. Gu, 2004. Preparation and characterization of high-concentration monodisperse silver colloids. In ACS Symposium Series 878: Concentrated Colloidal Dispersion-Theory, Experiment and Applications, (B. Markovic and P. Somasundaran, eds). American Chemical Society. pp 1-15.
  63. Wang, W., B. Gu, L. Liang, W. Hamilton, and D.J. Wesolowski. 2004. Synthesis of rutile (alpha -TiO2) nanocrystals with highly controlled size and shape by low temperature hydrolysis:  Effects of solvent composition. J. Phys. Chem. B. 108 (39), 14789-14792.
  64. Wang, W., B. Gu, L. Liang, and W. Hamilton. 2004. Adsorption and structural arrangement of cetyltrimethylammonium cations at the silica nanoparticle–water interface. J. Phys. Chem. B. 108: 17477-17483.
  65. Wang, W., B. Gu, and L. Liang. 2004. Effect of surfactants on the formation, morphology and surface property of synthesized SiO2 nanoparticles. J. Disp. Sci. Technol. 25:593-601.
  66. Gu, B., W. Dong, G.M. Brown, and D.R. Cole. 2004. Reply to Comment on "Complete Degradation of Perchlorate in Ferric chloride and Hydrochloric Acid under Controlled Temperature and Pressures. Environ. Sci. Technol., 38, 1919-1920.
  67. Wang W., Gu, B., Liang L., and Hamilton W. (2003) Fabrication of near infrared photonic crystals using highly-monodispersed submicrometer SiO2 spheres. J. Phys. Chem. B. 107, 12113-12117.
  68. Gu, B., S. C. Brooks, Y. Roh, and P. M. Jardine. 2003. Geochemical reactions and dynamics during titration of a contaminated groundwater with high uranium, aluminum, and calcium. Geochim. Cosmochim. Acta. 67, 2749-2761.
  69. Gu, B. and J. Chen. 2003. Enhanced microbial reduction of Cr(VI) and U(VI) by different natural organic matter fractions. Geochim. Cosmochim. Acta 67:3575-3582.
  70. Wang W., B. Gu, L. Liang, and W. Hamilton. 2003. Fabrication of two- and three-dimensional silica nanocolloidal particle arrays. J. Phys. Chem. B. 107:3400-3404.
  71. Gu, B., W. Dong, G.M. Brown, and D.R. Cole. 2003. Complete degradation of perchlorate in ferric chloride and hydrochloric acid under controlled temperature and pressure. Environ. Sci. Technol., 37:2291-2295.
  72. Gu, B., Y. K. Ku, G.M. Brown. 2003. Treatment of perchlorate-contaminated water using highly-selective, regenerable ion-exchange technology: a pilot-scale demonstration. Fed. Fac. Environ. J. 14: 75-94.
  73. Phillips, D.H., B. Gu, D.B. Watson, and Y. Roh. 2003. Mineralogical characteristics and transformations during long-term operation of a zero-valent iron reactive barrier. J. Environ. Qual. 32:2033-2045.
  74. Chen, J., B. Gu, R. A. Royer, and W. D. Burgos. 2003. The roles of natural organic matter fractions in chemical and microbial reduction of ferric iron. Sci. Total Environ. 307:167-178.
  75. Phillips, D.H., B. Gu, D.B. Watson, and Y. Roh. 2003. Impact of sample preparation on mineralogical analysis of zero-valent iron reactive barrier materials. J. Environ. Qual. 32, 1299-2003.
  76. Chen, J., B. Gu, and E.J. LeBoeuf. 2003. Fluorescence spectroscopic studies of natural organic matter fractions. Chemosphere. 50:639-647.
  77. Chen, J., B. Gu, E.J. LeBoeuf, H. Pan, and S. Dai. 2002. Spectroscopic characterization of the structural and functional properties of natural organic matter fractions. Chemosphere. 48:59-68.
  78. Gu, B., Y. K. Ku, G.M. Brown. 2002. Treatment of perchlorate-contaminated water using highly-selective, regenerable ion-exchange technology: a pilot-scale demonstration. Remediation. 12: 51-68.
  79. Gu, B., D.B. Watson, D.H. Phillips, and L. Liang. 2002. Ch. 11. Biogeochemical, mineralogical, and hydrological characteristics of an iron reactive barrier used for treatment of uranium and other contaminants. In Groundwater Remediation of Trace Metals, Radionuclides, and Nutrients, with  Permeable Reactive Barriers. D.L. Naftz, S.J. Morrison, J.A. Davis, C.C. Fuller (eds). Academic Press. pp. 305-342.
  80. Gu, B., D.B. Watson, L. Wu, D.H. Phillips, D.C. White, and J.Z. Zhou. 2002. Microbiological characteristics in a zero-valent iron reactive barrier. Environ. Monit. Assess. 77(3):293-309.
  81. Korte, N.E., O.R. West, L. Liang, B. Gu, J.L. Zutman, and Q. Fernando. 2002. The effect of solvent concentration on the use of palladized-iron for the step-wise dechlorination of polychlorinated biphenyls in soil extracts. Waste Manag. 22:343-349.
  82. Gu, B., G.M. Brown, L. Maya, M. J. Lance, and B.A. Moyer. 2001. Regeneration of perchlorate (ClO4-)-loaded anion exchange resins by novel tetrachloroferrate (FeCl4 -) displacement technique. Environ. Sci. Technol. 35:3363-3368.
  83. Gu, B., G. M. Brown, P. V. Bonnesen, L. Liang, B. A. Moyer, R. Ober, S. D. Alexandratos. 2000. Development of Novel Bifunctional Anion-Exchange Resins with Improved Selectivity for Pertechnetate:  Column Breakthrough and Field Studies. Environ. Sci. Technol. 34:1075-1080.
  84. Gu, B., G. M. Brown, S. D. Alexandratos, R. Ober, J. A. Dale, and S. Plant. 2000. Ch. 16. Efficient treatment of perchlorate contaminated groundwater by bifunctional anion exchange resins. In Perchlorate in the Environment, E. T. Urbansky, Eds. Kluwer Academic/Plenum, New York. pp 165-176.
  85. Liang, L., A. Hoffman, and B. Gu. 2000. Ligand-induced dissolution and release of ferrihydrite colloids. Geochim. Cosmochim. Acta. 64:2027-2037.
  86. Urbansky, E.D., B. Gu, M.L. Magnuson, G.M. Brown, and C.A. Kelty. 2000. Survey of bottled waters for perchlorate by electrospray ionization mass spectrometry (ESI-MS) and ion chromatography (IC). J. Sci. Food Agric. 80:1798-1804.
  87. Urbansky, E. T., M. L. Magnuson, C. A. Kelty, B. Gu, and G. M. Brown. 2000. Comment on “Perchlorate Identification in Fertilizers and the Addition/Correction thereto.” Environ. Sci. Technol. 34:4452-4453.
  88. Phillips, D.H., B. Gu, D.B. Watson, Y. Roh, and S.Y. Lee. 2000. Performance evaluation of a zero-valent iron reactive barrier: mineralogical characteristics. Environ. Sci. Technol. 34: 4169-4176.
  89. Liang, L., N. Korte, B. Gu, R. Puls, and C. Reeter. 2000. Geochemical and microbiological reactions affecting the long-term performance of in situ iron barriers. Adv. Environ. Res. 4:273-286.
  90. Brown, G. M., P. V. Bonnesen, B. A. Moyer, B. Gu, S. D. Alexandratos, V. Patel, and R. Ober. 2000. Chapter 15. The design of selective resins for the removal of pertechnetate and perchlorate from groundwater . In Perchlorate in the environment, E. T. Urbansky (ed). Plemner, New York. pp 155-164.
  91. Korte, N.E., J.L. Zutman, R.M. Schlosser, L. Liang, B. Gu, and Q. Fernando. 2000. Field application of palladized iron for the dechlorination of trichloroethene. Waste Management. 20:687-694.
  92. B. Gu, J. Chen, M. A. Vairavamurthy, S. Choi, and P. G. Tratnyek. 2000. Chemical and biological reduction of contaminant metals by natural organic matter. The 220th American Chemical Society National Meeting. 40:36-40.
  93. Chen, J., E.J. LeBoeuf, S. Choi, and B. Gu. 2000. Spectroscopic characterization of structural and functional properties of natural organic matter fractions. The 220th American Chemical Society National Meeting. 40:438-441.
  94. Gu, B., T.J. Phelps, L. Liang, M.J. Dickey, Y. Roh, B.L. Kinsall, A.V. Palumbo, and G.K. Jacobs. 1999. Biogeochemical dynamics in zero-valent iron columns: implications for permeable reactive barriers. Environ. Sci. Technol. 33:2170-2177.
  95. B. Gu, G. M. Brown, S. D. Alexandratos, R. Ober, J. A. Dale, and S. Plant. 1999. Efficient separation of perchlorate from contaminated groundwater by bifunctional anion exchange resins. The 218th ACS National Meeting. 39:87-90.
  96. Brown, G. M., P. V. Bonnesen, B. A. Moyer, B. Gu, S. D. Alexandratos, V. Patel, and R. Ober. 1999.  The design of selective resins for the removal of pertechnetate and perchlorate from groundwater. The 218th ACS National Meeting. 39:82-84.
  97. B. Gu, Brown, G. M., Alexandratos, S. D., Ober, R., Patel, V. 1999. Selective anion exchange resins for the removal of perchlorate (ClO4-) from groundwater. Oak Ridge National Laboratory, ORNL/TM-13753.
  98. Watson, D., B. Gu, D.H. Phillips, and S.Y. Lee. 1999. Evaluation of permeable reactive barriers for removal of uranium and other inorganics at the Department of Energy Y-12 Plant, S-3 disposal ponds. Oak Ridge National Laboratory, ORNL/TM-1999/143.
  99. Gu, B., L. Liang, M. J. Dickey, X. Yin, S. Dai. 1998.  Reductive precipitation of uranium(VI) by zero-valence iron. Environ. Sci. Technol. 32:3366-3373.
  100. Liang, L, B Gu, 1998. The treatment of groundwater with Mixed-Wastes: reductive dechlorination of TCE and reductive precipitation of uranium. NATO/ CCMS Pilot Study, EPA 542-R-9-003, May 1998. NATO publication No 229. pp 36-43.
  101. B. Gu, L. Liang, G.M. Brown, P.V. Bonnesen, B.A. Moyer, S.D. Alexandratos, and Ober R. 1998. A field trial novel bifunctional resins for removing pertechnetate (TcO4-) from contaminated groundwater. Oak Ridge National Laboratory, ORNL/TM-13593.
  102. Gu, B., and R.L. Siegrist. 1997. Dehalogenation of chlorinated organic compounds by strong alkalis. J. Environ. Eng. 123:982-987.
  103. Gu, B., L. Liang, P. Cameron, O.R. West, and N. Korte. 1997. TCE and PCB degradation by zero-valence iron in the presence of surfactant. Proceedings of the International Containment Technology Conference and Exhibition, St. Petersburg.  pp. 760-766.
  104. Spalding, B.P., M.A. Bogle, S.R. Cline, M.T. Naney, and B. Gu. 1997.  In Situ Vitrification Demonstration at Pit 11. Vol. 2. Site Characterization Report of the Pit 1 Area. Oak Ridge National Laboratory, ORNL/ER-425/V2.
  105. N. E. Korte, L. Liang, B. Gu, M. T. Muck, J. L. Zutman, R. M. Schlosser, R. L. Siegrist, T. C. Houk, Q. Fernando. 1997.  In-situ treatment of mixed contaminants in groundwater: application of zero-valence iron and palladized iron for treatment of groundwater contaminated with trichloroethylene and technetium-99. Oak Ridge National Laboratory, ORNL/TM-13530.
  106. Gu, B., T. Mehlhorn, L. Liang and J. F. McCarthy. 1996.  Competitive adsorption, displacement, and transport of organic matter on iron oxide: I. competitive adsorption.  Geochim. Cosmochim. Acta.  60:1943-1950.
  107. Gu, B., T. Mehlhorn, L. Liang and J. F. McCarthy. 1996.  Competitive adsorption, displacement, and transport of organic matter on iron oxide: II. displacement and transport.  Geochim. Cosmochim. Acta.  60: 2977-2992.
  108. Gu, B., K. E. Dowlen, L. Liang, and J. L. Clausen. 1996.  Efficient separation and recovery of technetium-99 from contaminated groundwater.  Separations Technol. 6:123-132.
  109. Liang, L., B. Gu, and X. Yin. 1996.  Removal of technetium-99 from contaminated groundwater with sorbents and reductive materials.  Separations Technol. 6:111-122.
  110. B. Gu, and R.L. Siegrist. 1996. Alkaline Dechlorination of Chlorinated Volatile Organic Compounds. Oak Ridge National Laboratory, ORNL/TM-13263. 
  111. McCarthy, J. F., B. Gu, L. Liang, J. Mas-Pla, T. M. Williams, and T. J. Yeh. 1996.  Filed tracer tests on the mobility of natural organic matter in a sandy aquifer. Water Resources Research. 32:1223-1238.
  112. B. Gu and K. E. Dowlen. 1996.  An investigation of groundwater organics, soil minerals, and activated carbon on the complexation, adsorption, and separation of technetium-99. Oak Ridge National Laboratory, ORNL/TM-13154. 
  113. Gu, B., O. R. West and R. L. Siegrist. 1995.  Using 14C-labeled radiochemicals can cause experimental error in studies of the behavior of volatile organic compounds.  Environ. Sci. Technol.  29:1210-1214.
  114. Gu, B., J. Schmitt, Z. Chen, L. Liang and J. F. McCarthy. 1995.  Adsorption and desorption of different organic matter fractions on iron oxide.  Geochim. Cosmochim. Acta.  59 (2):219-229.
  115. Gu, B., J. Schmitt, Z. Chen, L. Liang and J. F. McCarthy. 1994.  Adsorption-desorption of natural organic matter on iron-oxide: mechanisms and models.  Environ. Sci. Technol.  28:38-46.
  116. B. Gu, J. L. Clausen, J. A. McDonald and J. F. McCarthy. 1994.  Assessment of the influences of groundwater colloids on the migration of technetium-99 at the Paducah Gaseous Diffusion Plant site in Paducah, Kentucky.  Oak Ridge National Laboratory, ORNL/TM-12747.
  117. Gu, B. and H. E. Doner. 1993.  Dispersion and aggregation of soils as influenced by organic and inorganic polymers. Soil Sci. Soc. Amer. J. 57:709-716.
  118. Liang, L., A. McNabb, J. Paulk, B. Gu and J. F. McCarthy. 1993.  Kinetics of ferrous iron oxygenation in the presence of natural organic matter.  Environ. Sci. Technol.  27:1864-1870.
  119. Gu, B. and H. E. Doner. 1992. The interaction of polysaccharides with Silver-Hill illite. Clays Clay Miner. 40:151-156.
  120. Gu, B. and L. E. Lowe. 1992. Observations on the effect of a soil polysaccharide fraction on boron adsorption by clay minerals. Can. J. Soil Sci. 72:623-626.
  121. Gu, B. and H. E. Doner. 1992. The microstructure of dilute clay and humic acid suspensions revealed by freeze-fracture electron microscopy. Clays Clay Miner. 40:246-250.
  122. B. Gu and R. K. Schulz. 1991. Anion retention in soil: possible application to reduce migration of buried technetium and iodine.  U. S. Nuclear Regulatory Commission, Washington, DC 20555. NUREG/CR-5464. 
  123. Gu, B. and L. E. Lowe. 1990. Studies on the adsorption of boron on humic acids. Can. J. Soil Sci. 70:305-311.
  124. Gu, B. and H. E. Doner. 1990. Adsorption of hydroxy-Al polycations and destabilization of illite and montmorillonite suspensions. Clays Clay Miner. 38:493-500.

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