Selected Publications (1993 --)
Enami, S.; Vecitis, C. D.; Cheng, J.; Hoffmann, M. R.; Colussi, A. J. Electrospray Mass Spectrometric Detection of Products and Short-Lived Intermediates in Aqueous Aerosol Microdroplets Exposed to a Reactive Gas, J. Phys. Chem. A.; 2007; DOI: 10.1021/jp075505r Ryu, S. Y.; Balcerski, W.; Lee, T. K.; Hoffmann, M. R. Photocatalytic Production of Hydrogen from Water with Visible Light Using Hybrid Catalysts of CdS Attached to Microporous and Mesoporous Silicas, J. Phys. Chem. C.; 2007;   DOI: 10.1021/jp074860e Balcerski, W.; Ryu, S. Y.; Hoffmann, M. R. Visible-Light Photoactivity of Nitrogen-Doped TiO2 : Photo-oxidation of HCO2H to CO2 and H2O, J. Phys. Chem. C; 2007; 111; 15357-15362. DOI: 10.1021/jp074989o Enami, S.; Vecitis, C. D.; Cheng, J.; Hoffmann, M. R.; Colussi, A. J., Global inorganic source of atmospheric bromine, J. Phys. Chem. A., 2007; 111, 8749-8752. DOI: 10.1021/jp074903r Ryu, S. Y.; Choi, J.; Balcerski, W.; Lee, T. K.; Hoffmann, M. R., Photocatalytic production of H2 on nanocomposite catalysts. , Ind. Eng. Chem. Res., 46; 7476-7488. DOI: 10.1021/ie0703033 Guzman, M. I.; Hoffmann, M. R.; Colussi, A. J., Photolysis of pyruvic acid in ice: Possible relevance to CO and CO2 ice core record anomalies , J . Geophys. Res. Atmos. 2007 , 112 , (D10): Art. No. D10123 MAY 26 2007 Cheng, J.; Vecitis, C. D.; Hoffmann, M. R.; Colussi, A. J. Experimental anion affinities for the air/water interface, Journal of Physical Chemistry B, 2006, 110: 25598-25602. Lesko, T.; Colussi, A. J.; Hoffmann, M. R. Sonochemical decomposition of phenol: Evidence for a synergistic effect of ozone and ultrasound for the elimination of total organic carbon from water. Environ. Sci. Technol. 2006, 40, 6818-6823. Guzman, M. I.; Hildebrandt, L.; Colussi, A. J.; Hoffmann, M. R. Cooperative hydration of pyruvic acid in ice. J. Am. Chem. Soc. 2006, 128, 10621-10624. Robinson, C.; Boxe, C. S.; Guzman, M. I.; Colussi, A. J.; Hoffmann, M. R. Acidity of frozen electrolyte solutions. J. Phys. Chem. B 2006, 110, 7613-7616. Boxe, C. S.; Colussi, A. J.; Hoffmann, M. R.; Perez, I. M.; Murphy, J. G.; Cohen, R. C. Kinetics of no and no2 evolution from illuminated frozen nitrate solutions. J. Phys. Chem. A 2006, 110, 3578-3583. Guzman, M. I.; Colussi, A. I.; Hoffmann, M. R. Photoinduced oligomerization of aqueous pyruvic acid. J. Phys. Chem. A 2006, 110, 3619-3626. Guzman, M. I.; Colussi, A. J.; Hoffmann, M. R. Photogeneration of distant radical pairs in aqueous pyruvic acid glasses. J. Phys. Chem. A 2006, 110, 931-935. Locke, B. R.; Sato, M.; Sunka, P.; Hoffmann, M. R.; Chang, J. S. Electrohydraulic discharge and nonthermal plasma for water treatment. Ind. Eng. Chem. Res. 2006, 45, 882-905. Moss, J. A.; Szczepankiewicz, S. H.; Park, E.; Hoffmann, M. R. Adsorption and photodegradation of dimethyl methylphosphonate vapor at TiO2 surfaces. J. Phys. Chem. B 2005, 109, 19779-19785. Boxe, C. S.; Colussi, A. J.; Hoffmann, M. R.; Murphy, J. G.; Wooldridge, P. J.; Bertram, T. H.; Cohen, R. C. Photochemical production and release of gaseous no2 from nitrate-doped water ice. J. Phys. Chem. A 2005, 109, 8520-8525. McCabe, J. R.; Boxe, C. S.; Colussi, A. J.; Hoffmann, M. R.; Thiemens, M. H. Delta oxygen isotopic fractionation in the photochemistry of nitrate in water and ice. J. Geophys. Res.-Atmos. 2005, 110 (D15): Art. No. D15310 AUG 13 2005. Ferguson , M. A.; Hoffmann, M. R.; Hering, J. G. TiO 2 -photocatalyzed As(III) oxidation in aqueous suspensions: Reaction kinetics and effects of adsorption. Environ. Sci. Technol. 2005, 39, 1880-1886. Hoffmann, M. R. Advanced water treatment using semiconductor electrodes. Electrochemistry 2004, 72, 805. T. M. Lesko, A. J. Colussi, and M. R. Hoffmann, " Hydrogen isotope effects and mechanism of aqueous ozone and peroxone decompositions,"J. Amer. Chem. Soc., 126, 4432-4436 (2004). A. M. Johansen and M. R. Hoffmann, "Chemical characterization of ambient aerosol collected during the northeast monsoon season over the Arabian Sea : Anions and cations", Journal of Geophysical Research-Atmospheres, 109, art. no.-D05305, (2004). A. M. Johansen, A. M. and M. R. Hoffmann, "Chemical characterization of ambient aerosol collected during the northeast monsoon season over the Arabian Sea : Labile- Fe(II) and other trace metals", Journal of Geophysical Research-Atmospheres, 108, art. no.-4408, (2003). A. J. Colussi and M. R. Hoffmann, "In situ photolysis of deep ice core contaminants by Cerenkov radiation of cosmic origin", Geophysical Research Letters, 30, art. no.-1195, (2003). W. K. Ching, A. J. Colussi, and M. R. Hoffmann, "Soluble sunscreens fully protect E-coli from disinfection by electrohydraulic discharges", Environmental Science & Technology, 37, 4901-4904, (2003). C. S. Boxe, A. J. Colussi, M. R. Hoffmann, D. Tan, J. Mastromarino, A. T. Case, S. Sandholm, and D. D. Davis, "Multiscale ice fluidity in NOx photodesorption from frozen nitrate solutions", Journal of Physical Chemistry A, 107, 11409-11413, (2003). C.J.G. Cornu, A.J. Colussi, and M.R. Hoffmann, "Time scales and pH dependences of the redox processes determining the photocatalytic efficiency of TiO2 nanoparticles from periodic illumination experiments in the stochastic regime," J. Phys. Chem. B 107, 3156-3160 (2003). S. H. Szczepankiewicz, J. A. Moss and M. R. Hoffmann, "Electron traps and the Stark Effect on Hydroxylated Titania Photocatalysts." J. Phys. Chem. B 106, 7654-7658 (2002). S. H. Szczepankiewicz, J. A. Moss and M. R. Hoffmann, "Slow Surface Charge Trapping Kinetics on Irradiated TiO2." J. Phys. Chem. B 106, 2922-2927 (2002). Y. Dubowski, A.J. Colussi, C. Boxe, and M.R. Hoffmann, Monotonic increase of nitrite yields in the photolysis of nitrate in ice and water between 238 and 294 K", J. Phys. Chem. A, 106, 6967-6971 (2002). C. J. G. Cornu, A. J. Colussi and M. R. Hoffmann, "Quantum Yields for the Photocatalytic Oxidation of Formate in Aqueous TiO2 Suspensions under Continuo us and Periodic Illumination," J. Phys. Chem. B 105, 1351-1354 (2001). Y. Dubowski, A. J. Colussi, and M. R. Hoffmann, "Nitrogen Dioxide Release in the 302 nm Band Photolysis of Spray-Frozen Aqueous Nitrate Solutions: Atmospheric Implications," J. Phys. Chem. A 105, 4928-4932 (2001). W. K. Ching, A. J. Colussi, H. J. Sun, K. H. Nealson and M. R. Hoffmann, “Kinetics of Escherichia coli Disinfection in an Electrohydraulic Discharge Reactor,” Environ. Sci. Technol., 35, 4139-4144 (2001). H. Destaillats, H., T.M. Lesko, M. Knowlton, H. Wallace, and M.R. Hoffmann, "Scale-up of sonochemical reactors for water treatment," Industrial & Engineering Chemistry Research, 40, 3855-3860 (2001). Leung, F.Y., A.J. Colussi, and M.R. Hoffmann, "Sulfur isotopic fractionation in the gas-phase oxidation of sulfur dioxide initiated by hydroxyl radicals," J. Phys. Chem. A, 105, 8073-8076 (2001). J. M. Joseph, H. Destaillats, H. M. Hung, and M. R. Hoffmann, “The Sonochemical Degradation of Azobenzene and Related Azo Dyes: Rate Enhancements via Fenton's Reactions,” J. Phys. Chem. A, 104, 301-307 (2000). H. Destaillats, H. M. Hung, and M. R. Hoffmann, “Degradation of Alkylphenol Ethoxylate Surfactants in Water with Ultrasonic Irradiation,” Environ. Sci. Technol. 34, 311-317 (2000). H. M. Hung, F. H. Lind and M. R. Hoffmann, “Kinetics and Mechanism of the Enhanced Reductive Degradation of Nitrobenzene by Elemental Iron in the Presence of Ultrasound", Environ. Sci. Technol. 34, 1758-1763 (2000). L. K. Weavers, N, Malmstadt, and M. R. Hoffmann, “Kinetics and Mechanism of Pentachlorophenol Degradation by Sonication, Ozonation, and Sonolytic Ozonation," Environ. Sci. Technol. 34, 1280-1285 (2000). A. J. Colussi, M. R. Hoffmann, Y. Tang, “Dynamic Inhibition of Constrained Crystallization by Mesoscopic Morphology Modifiers,” Langmuir 16, 2405-2408 (2000). A. J. Colussi, M. R. Hoffmann, Y. Tang, "Conformational Disorder Binds n-alkanes into Surface Monolayers above the Normal Freezing Point," Langmuir 16, 5213-5217 (2000). A. M. Johansen, R. L. Siefert and M. R. Hoffmann, "Chemical Composition of Aerosols Collected over the Tropical North Atlantic Ocean," J. Geophys. Res. 105, 15277-15312 (2000). S. H. Szczepankiewicz, A. J. Colussi, and M. R. Hoffmann, "Infrared Spectra of Photoinduced Species on Hydroxylated Titania Surfaces," J. Phys. Chem. B 104, 9842-9850 (2000). M. R. Hoffmann, N. F. Dalleska and M. R. Hoffmann, "Rates and Mechanism of Carbonyl Sulfide Oxidation by Peroxides in Concentrated Sulfuric Acid," J. Phys. Chem. A 104, 10794-10796 (2000). H. W. Bange, T. J. Rixen, A. M. Johansen, R. L. Siefert, R. Ramesh, V. Ittekkot, M. R. Hoffmann and M. O. Andreae, "A Revised Nitrogen Budget for the Arabian Sea," Global Biogeochemical Cycles 14, 1283-1297 (2000). Y. Dubowski, A. J. Colussi, and M. R. Hoffmann, "Photochemical Transformation in Ice: Implications for the Fate of Chemical Species," Geophys. Res. Lett. 27, 3321-3324 (2000). W. Elbert, M. R. Hoffmann, M. Krämer, G. Schmitt, and M. O. Andreae, “Control of Solute Concentrations in Cloud and Fog Water by Liquid Water Content,” Atmos. Environ., 34, 1109-1122 (2000). R. L. Siefert, A. M. Johansen, and M. R. Hoffmann, “Chemical Characterization of Ambient Aerosol Collected during the Southwest Monsoon and Inter-Monsoon Seasons over the Arabian Sea: Labile Fe(II) and Other Trace Metals,” J. Geophys. Res., 104, 3511-3526 (1999). J. W. Kang, H. M. Hung, A. Lin and M. R. Hoffmann, “The Sonolytic Destruction of Methyl Tertiary Butyl Ether (MTBE) by Ultrasonic Irradiation: Effects of Ozone and Frequency", Environ. Sci. Technol. 33, 3199-3205 (1999). A. J. Colussi, L. K. Weavers and M. R. Hoffmann, “Chemical Bubble Dynamics and Quantitative Sonochemistry", J. Phys. Chem. A. 102, 6927-6934 (1998). J. W. Kang, H. M. Hung, A. Lin and M. R. Hoffmann, “The Sonolytic Destruction of Methyl Tertiary Butyl Ether (MTBE) by Ultrasonic Irradiation: Effects of Ozone and Frequency", Environ. Sci. Technol. 33, 3199-3205 (1999). A. J. Colussi, L. K. Weavers and M. R. Hoffmann, “Chemical Bubble Dynamics and Quantitative Sonochemistry", J. Phys. Chem. A., 102, 6927-6934 (1998). A. J. Colussi, H. M. Hung and M. R. Hoffmann, “Sonochemical Degradation Rates of Volatile Solutes", J. Phys. Chem. 103, 2696-2699 (1999). A. M. Johansen, R. L. Siefert and M. R. Hoffmann, “Chemical Characterization of Ambient Aerosol Collected during the Southwest Monsoon and Inter-Monsoon Seasons over the Arabian Sea: Anions and Cations,” J. Geophys. Res.,104, 26325-26347 (1999). A. J. Colussi and M. R. Hoffmann, “Vapor Supersaturation in Collapsing Bubbles. Relevance to the Mechanisms of Sonochemistry and Sonoluminescence,” J. Phys. Chem. A, 103, 11336-11339 (1999). H. M. Hung and M. R. Hoffmann, “Kinetics and Mechanism of the Sonochemical Degradation of Chlorinated Hydrocarbons: Frequency Effects,” J. Phys. Chem. A, 103, 2734-2739 (1999). N. J. Peill and M. R. Hoffmann, "Mathematical Model of Photocatalytic Fiber-Optic Cable Reactor for Heterogeneous Photocatalysis," Environ. Sci. Technol. 32, 398-404 (1998). L. K. Weavers, F. H. Ling, and M. R. Hoffmann, “The Combination of Sonolysis and Ozonolysis for Aromatic Compound Degradation,” Environ. Sci. Technol., 32, 2727-2733 (1998). R. L. Siefert, A. M. Johansen, M. R. Hoffmann and S. Pehkonen, "Measurements of Trace Metal (Fe, Cu, Mn, Cr) Oxidation States in Fog and Stratus Clouds", J Air Waste Manag. 48, 128-143 (1998). P. S. Lang, W. K. Ching, D. M. Willberg and M. R. Hoffmann, “Oxidative Degradation of 2,4,6-trinitrotoluene by Ozone in an Electrohydraulic Discharge Reactor,” Environ. Sci. Technol., 32, 3142-3148 (1998). J. W. Kang and M. R. Hoffmann, "The Kinetics and Mechanism of the Sonolytic Destruction of Methyl Tertiary Butyl Ether (MTBE) by Ultrasonic Irradiation in the Presence of Ozone", Environ. Sci. Technol., 32, 3194-3199 (1998). L. K. Weavers and M. R. Hoffmann, “The Sonolytic Decomposition of Ozone in Aqueous Solution: Mass Transfer Effects", Environ. Sci. Technol. 32, 3941-3947 (1998). H. M. Hung and M. R. Hoffmann, “Kinetics and Mechanism of the Enhanced Sonochemical Degradation of CCl4 in the Presence of Elemental Iron,” Environ. Sci. Technol., 32, 3011-3016 (1998). J. M. Kesselman, O. Weres, N. S. Lewis and M. R. Hoffmann, "Electrochemical Production of Hydroxyl Radical at Polycrystalline Nb-doped TiO2 Electrodes and Estimation of the Partitioning between Hydroxyl Radical and Direct Hole Oxidation Pathways," J. Phys. Chem., 101, 2637-2643 (1997). N. J. Peill and M. R. Hoffmann, "Iron(III)-doped Q-sized TiO2 Coatings in a Fiber Optic Cable Photochemical Reactor," J. Photochem. Photobiol. A. Chem., 108, 221-228 (1997). J. M. Kesselman, N. S. Lewis and M. R. Hoffmann, "Photoelectrochemical Degradation of 4-chlorocatechol at TiO2 Electrodes: Comparison between Sorption and Photoreactivity," Environ. Sci. Technol., 31, 2298-2302 (1997). L. K. Weavers and M. R. Hoffmann, "A New Advanced Oxidation Process: Degradation of Triethanolamine and COD Reduction in Wastewater by Photoactivated Periodate," Water Environ. Res., 69, 1113-1119 (1997). N. J. Peill and M. R. Hoffmann, "Solar-Powered Photocatalytic Fiber Optic Cable Reactor for Waste Stream Remediation," J. Solar Energy Eng., 119, 229-236 (1997). Weavers, L. K., I. Hua and M. R. Hoffmann, "Degradation of Triethanolamine and Chemical Oxygen-Demand Reduction In Waste-Water By Photoactivated Periodate, " Water Environment Research 69, 1112-1119 (1997). Peill, N. J., L. Bourne and M. R. Hoffmann, Iron(III)-Doped Q-Sized TiO2 Coatings In a Fiberoptic Cable Photochemical Reactor." Journal of Photochemistry and Photobiology a Chemistry 108, 221-228 (1997). Kesselman, J. M., N. S. Lewis and M. R. Hoffmann, "Photoelectrochemical Degradation of 4-Chlorocatechol At TiO2 Electrodes - Comparison Between Sorption and Photoreactivity," Environmental Science & Technology 31, 2298-2302 (1997). Kesselman, J. M., O. Weres, N. S. Lewis and M. R. Hoffmann, "Electrochemical Production of Hydroxyl Radical at Polycrystalline Nb-Doped Tio2 Electrodes and Estimation of the Partitioning Between Hydroxyl Radical and Direct Hole Oxidation Pathways," Journal of Physical Chemistry B 101: 2637-2643 (1997) Choi, W. Y. and M. R. Hoffmann, "Novel Photocatalytic Mechanisms for CHCl3, CHBr3, and CCl3CO2- Degradation and the Fate of Photogenerated Trihalomethyl Radicals on TiO2." Environmental Science & Technology 31, 89-95 (1997). I. Hua and M. R. Hoffmann, "Optimization of Ultrasonic Irradiation as an Advanced Oxidation Technology," Environ. Sci. Technol., 31, 2237-2243 (1997). W. Choi and M.R. Hoffmann, "Photoinduced One-Electron and Two-Electron Transfers to CC14 and TiO2 Surfaces: Kinetics and mechanism of CC14 Photoreductive Degradation, " J. Phys. Chem. 100, 2161-2169 (1996). I. Hua and M.R. Hoffmann, "Kinetics and Mechanis, of the Sonolytic Degradation of CC14 - Intermediates and By-Products," Environ. Sci. Technol. 30, 864-871 (1996). R.L. Siefert, S.M. Webb, and M.R. Hoffmann, "Determination of Photochemically Available Iron in Ambient Aerosols, "Journal of Geophysical Researsh Atmospheres, 101, 1441-1449 (1996). D. M. Willberg; P. S. Lang; R. H. Hochemer; A. Kratel; M. R. Hoffmann,"degradation of 4-chlorophenol, 3,4-dichloroaniline, and 2,4,6-trinitrotoluene in an electrohydraulic discharge reactor," Environmental Science & Technology, 30, 2526-2534 (1996) S. T. Martin; J. M. Kesselman; D. S. Park; N. S. Lewis; M. R. Hoffmann, "Surface-structures of 4-chlorocatechol adsorbed on titanium-dioxide," Environmental Science & Technology, 30, 2535-2542 (1996) N. J. Peill; M. R. Hoffmann, "Chemical and physical characterization of a TiO2 -coated fiber optic cable reactor," Environmental Science & Technology, 30, 2806-2812 (1996) M. R. Hoffmann, I. Hua, and R. Höchemer, "Application of Ultrasonic Irradiation for the Degradation of Chemical Contaminants in Water," Ultrasonics Sonochemistry, 3, S163-S172 (1996). M. R. Hoffmann, I. Hua, and R. Höchemer, “Application of Ultrasonic Irradiation for the Degradation of Chemical Contaminants in Water,” Ultrasonics Sonochemistry, 3, S163-S172 (1996). D. M. Willberg, P.S. Lang, R. H. Höchemer, A. Kratel, and M.R. Hoffmann, "Electrohydraulic Destruction of Hazardous Wastes,"Chem. Tech., 26, 52-57 (1996). S. T. Martin, J. M. Kesselman, D. S. Park, N. S. Lewis, and M. R. Hoffmann, Surface Structures of 4-chlorocatechol Adsorbed on Titanium Dioxide," Environ. Sci. Technol., 30, 2535-2542 (1996). M.R. Hoffmann, S.T. Martin, W.Choi and D.W. Bahnemann, "Environmental Applications of Semiconductor Photocatalysis," Chem. Rev. 95, 69-96 (1995). W. Choi and M.R. Hoffmann, "Photoreductive Mechanism of CC14 Degradation on TiO2 Particles and Effects of Electron Donors," Environ. Sci. Technol. 29, 1646-1654 (1995). I. Hua, R.H. Hvchemer and M.R. Hoffmann, "The Sonolytic Hydrolysis of p-nitrophenylacetate: The Role of Supercritical Water," J. Phys. Chem. 99, 2335-2342 (1995). S.O. Pehkonen, R.L. Siefert, and M.R. Hoffmann, "Photoreduction of Iron Oxyhydroxides and Photooxidation of Halogendated Acetic Acids: Implications for Tropospheric Chemistry," Environ. Sci. Technol. 29, 1215-1222 (1995). I. Hua and M.R. Hoffmann, "The Kinetics and Mechanism of the Sonolytic Degradation of CC14 in Aqeous Solution: Reaction Intermediates and By-Products, "Environ. Sci. Technol. 30, 864-871 (1996). N.J. Peill and M.R. Hoffmann, "Development and Optimization of a TiO2-Coated Fiber Optic Cable Reactor: Photocatalytic Degradation of 4-Chlorophenol, "Envrion. Sci. Technol. 29, 2974-2981 (1995). A.J. Hoffman, E.R. Carraway and M.R. Hoffmann, "Photocatalytic Production of Hydrogen Peroxide and Organic Peroxides on Quantum-sized Semicondunctor Colloids," Environ. Sci. Technol. 28, 776-785 (1994). S.T. Martin, H. Herrmann, W. Choi and M.R. Hoffmann, "Time-Resolved Microwave Conductivity (TRMC) 1. TiO2 Photoactivity and Size Quantization," J. Chem., Soci. Faraday Trans. 90, 3315-3322 (1994). M. Suarez-Iha, S. Pehkonen, M.R. Hoffmann, "Stability, Stoichiometry and Structure of Fe(II) and Fe(III) Complexes of di-2-pyridyl ketone benzohydrazone - Environmental Applications," Environ. Sci. Technol. 28, 2080-2086 (1994). W. Choi, A. Termin and M.R. Hoffmann, "The Role of Metal-Ion Dopants in Quantum-Sized TiO2: Correlation Between Photoreactivity and Charge-Carrier Recombination Dynamics," J. Phys. Chem. 98, 13669-13679 (1994). Y. Erel, S.O. Pehkonen and M.R. Hoffmann "Redox Chemistry of Fe in Coastal Fog and Stratus Clouds", J. Geophys. Res. 98, 18423-18434 (1993). S.O. Pehkonen, R.L. Siefert, S. Webb, Y. Erel and M.R. Hoffmann, "Photoreduction Of Iron Oxyhydroxides In The Presence Of Important Atmospheric Organic-Compounds," Enrion. Sci. Technol. 27, 2056-2062 (1993).