个人简介

B.S., Caltech, 1977; M.S., 1977; Ph.D., Massachusetts Institute of Technology, 1981. Associate Professor, Caltech, 1988-91; Professor, 1991-; Argyros Professor, 2002-.

研究领域

Research in the Lewis Group focuses on photoelectrochemistry and chemical vapor sensing. Photoelectrochemistry We study ways to harness sunlight to generate chemical fuel, specifically by splitting water to generate hydrogen. These efforts have as their final goal the creation of a photoelectrochemical cell similar to the one pictured at right. This cell consists of nanostructured arrays of anodes and cathodes, oxidation and reduction catalysts, and a central conductive membrane that allows for ion exchange. Various subgroups are addressing the challenges inherent in developing this cell: Photoanodes for Water Oxidation Silicon Photocathode Arrays Water-Splitting Membrane Hydrogen Evolution Catalysis Silicon Surface Chemistry Light-Material Interactions Non-conventional Solar Absorbers Chemical Vapor Sensing We are developing an Electronic Nose that consists of arrays of chemically sensitive conducting polymer films capable of detecting and quantifying a broad variety of analytes.

Chemistry

近期论文

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Microwave Near-Field Imaging of Two-Dimensional Semiconductors . S. Berweger, J. C. Weber, J. John, J. M. Velazquez, A. Pieterick, N. A. Sanford, A. V. Davydov, B. Brunschwig, N. S. Lewis, T. M. Wallis, P. Kabos , Nano Letters, 2015, 15, 1122-1127, http://dx.doi.org/10.1021/nl504960u CoP as an Acid-Stable Active Electrocatalyst for the Hydrogen-Evolution Reaction: Electrochemical Synthesis, Interfacial Characterization and Performance Evaluation. F. H. Saadi, A. I. Carim, E. Verlage, J. C. Hemminger, N. S. Lewis, and M. P. Soriaga, J. Phys. Chem. C, 2014, 118, 29294–29300, http://dx.doi.org/10.1021/jp5054452 Stabilization of n-Cadmium Telluride Photoanodes for Water Oxidation to O2(g) in Aqueous Alkaline Electrolytes Using Amorphous TiO2 Films Formed by Atomic-Layer Deposition. M. F. Lichterman, A. I. Carim, M. T. McDowell, S. Hu, H. B. Gray, B. S. Brunschwig, N. S. Lewis, Energy Environ. Sci., 2014, 7, 3334-3337, http://dx.doi.org/10.1039/C4EE01914H Improved Stability of Polycrystalline Bismuth Vanadate Photoanodes by Use of Dual-Layer Thin TiO2/Ni Coatings. M. T. McDowell, M. F. Lichterman, J. M. Spurgeon, S. Hu, I. D. Sharp, B. S. Brunschwig, N. S. Lewis, J. Phys. Chem. C, 2014, 118, 19618–19624, http://dx.doi.org/10.1021/jp506133y An Experimental and Modeling/Simulation-Based Evaluation of the Efficiency and Operational Performance Characteristics of an Integrated, Membrane-Free, Neutral pH Solar-Driven Water-Splitting System. J. Jin, K. Walczak, M. R. Singh, C. Karp, N. Lewis, C. Xiang, Energy Environ. Sci., 2014, 7, 3371-3380, http://dx.doi.org/10.1039/C4EE01824A Operando Synthesis of Macroporous Molybdenum Diselenide Films for Electrocatalysis of the Hydrogen-Evolution Reaction. F. H. Saadi, A. I. Carim, J. M. Velazquez, J. H. Baricuatro, C. C. L. McCrory, M. P. Soriaga, N. S. Lewis, ACS Catalysis, 2014, 4, 2866, http://dx.doi.org/10.1021/cs500412u Electrocatalysis of the Hydrogen-Evolution Reaction by Electrodeposited Amorphous Cobalt Selenide. A. I. Carim, F. H. Saadi, M. P. Soriaga, N. S. Lewis, J. Mater. Chem. A, 2014, 2, 13835, http://dx.doi.org/10.1039/c4ta02611j Amorphous TiO2 Coatings Stabilize Si, GaAs, and GaP Photoanodes for Efficent Water Oxidation. S. Hu, M. R. Shaner, J. A. Beardslee, M. Lichterman, Bruce S. Brunchwig, N. S. Lewis, Science, 2014, 344, 1005, http://dx.doi.org/10.1126/science.1251428 Synthesis and hydrogen-evolution activity of tungsten selenide thin films deposited on tungsten foils . J. M. Velazquez, F. H. Saadi, A. P. Pieterick, J. M. Spurgeon, M. P. Soriaga, B. S. Brunschwig and N. S. Lewis , J. Electroanal. Chem., 2014 , 716, 45-48 , dx.doi.org/10.1016/j.jelechem.2013.11.030 Photoelectrochemical Behavior of Hierarchically Structured Si/WO3 Core–Shell Tandem Photoanodes . R. H. Coridan, K. A. Arpin, B. S. Brunschwig, P. V. Braun and N. S. Lewis , Nano Letters, 2014, , dx.doi.org/10.1021/nl404623t Two stories from the ISACS 12 conference: solar-fuel devices and catalyst identification. Z. Huang, C. X. Xiang, H. J. Lewerenz, and N. S. Lewis, Energy & Environmental Science, 2014, 7, 1207, 10.1039/c3ee90043f Bandgap Tunability in Zn(Sn,Ge)N-2 Semiconductor Alloys. P. Narang, S. Y. K. Chen, N. C. Coronel, S. Gul, J. Yano, L. W. Wang, N. S. Lewis, and H. A. Atwater, Advanced Materials, 2014, 26, 1235, 10.1002/adma.201304473 Photoelectrochemistry of core-shell tandem junction n-p(+)-Si/n-WO3 microwire array photoelectrodes. M. R. Shaner, K. T. Fountaine, S. Ardo, R. H. Coridan, H. A. Atwater, and N. S. Lewis, Energy & Environmental Science, 2014, 7, 779, 10.1039/c3ee43048k Silicon Microwire Arrays for Solar Energy-Conversion Applications. E. L. Warren, H. A. Atwater, and N. S. Lewis, Journal of Physical Chemistry C, 2014 , 10.1021/jp406280x Will Solar-Driven Water-Splitting Devices See the Light of Day?. J. R. McKone, N. S. Lewis, and H. B. Gray, Chemistry of Materials, 2014 , 26, 407\\, 10.1021/cm4021518 Redox Properties of Mixed Methyl/Vinylferrocenyl Monolayers on Si(111) Surfaces. J. R. C. Lattimer, B. S. Brunschwig, N. S. Lewis, and H. B. Gray, Journal of Physical Chemistry C, 2013, 117, 27012-27022, 10.1021/jp409958c Simulations of the irradiation and temperature dependence of the efficiency of tandem photoelectrochemical water-splitting systems. S. Haussener, S. Hu, C. X. Xiang, A. Z. Webber, and N. S. Lewis, Energy & Environmental Science, 2013, 6, 3605, 10.1039/c3ee41302k Modeling an integrated photoelectrolysis system sustained by water vapor. C. X. Xiang, Y. K. Chen, and N. S. Lewis, Energy & Environmental Science, 2013, 6, 3713, 10.1039/c3ee42143k Photoelectrochemical Behavior of n-Type Si(111) Electrodes Coated with a Single Layer of Graphene. Adam C. Nielander, Matthew J. Bierman, Nicholas Petrone, Nicholas C. Strandwitz, Shane Ardo, Fan Yang, James Hone, and Nathan S. Lewis, Journal of The American Chemical Society, 2013 , 10.1021/ja407462g Enhanced Stability and Activity for Water Oxidation in Alkaline Media with Bismuth Vanadate Photoelectrodes Modified with a Cobalt Oxide Catalytic Layer Produced by Atomic Layer Deposition. Michael F. Lichterman, Matthew R. Shaner, Sheila G. Handler, Bruce S. Brunschwig, Harry B. Gray, Nathan S. Lewis, and Joshua M. Spurgeon, Journal of Physical Chemistry Letters, 2013 , 10.1021/jz4022415