Search Results - "Somorjai, G. A"

High-Surface-Area Catalyst Design:  Synthesis, Characterization, and Reaction Studies of Platinum Nanoparticles in Mesoporous SBA-15 Silica by Rioux, R. M, Song, H, Hoefelmeyer, J. D, Yang, P, Somorjai, G. A

“…Platinum nanoparticles in the size range of 1.7−7.1 nm were produced by alcohol reduction methods. A polymer (poly(vinylpyrrolidone), PVP) was used to…”
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Size and Shape Dependence on Pt Nanoparticles for the Methylcyclopentane/Hydrogen Ring Opening/Ring Enlargement Reaction by Alayoglu, S., Aliaga, C., Sprung, C., Somorjai, G. A.

“…Monodisperse Pt nanoparticles (NPs) with well-controlled sizes in the range between 1.5 and 10.8 nm, and shapes of octahedron, cube, truncated octahedron and…”
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Influence of Particle Size on Reaction Selectivity in Cyclohexene Hydrogenation and Dehydrogenation over Silica-Supported Monodisperse Pt Particles by Rioux, R. M., Hsu, B. B., Grass, M. E., Song, H., Somorjai, G. A.

“…The role of particle size during the hydrogenation/dehydrogenation of cyclohexene (10 Torr C 6 H 10 , 200–600 Torr H 2 , and 273–650 K) was studied over a…”
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High technology catalysts towards 100% selectivity Fabrication, characterization and reaction studies by SOMORJAI, G. A, RIOUX, R. M

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Molecular Restructuring at Poly(n-butyl methacrylate) and Poly(methyl methacrylate) Surfaces Due to Compression by a Sapphire Prism Studied by Infrared−Visible Sum Frequency Generation Vibrational Spectroscopy by Kweskin, S. J, Komvopoulos, K, Somorjai, G. A

“…Infrared−visible sum frequency generation (SFG) vibrational spectroscopy, performed in visible wavelength total internal reflection (TIR) geometry, was used to…”
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Fabrication of Large Number Density Platinum Nanowire Arrays by Size Reduction Lithography and Nanoimprint Lithography by Yan, X.-M, Kwon, S, Contreras, A. M, Bokor, J, Somorjai, G. A

“…Large number density Pt nanowires with typical dimensions of 12 μm × 20 nm × 5 nm (length × width × height) are fabricated on planar oxide supports. First…”
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Carbon Monoxide Adsorption and Oxidation on Monolayer Films of Cubic Platinum Nanoparticles Investigated by Infrared−Visible Sum Frequency Generation Vibrational Spectroscopy by Kweskin, S. J, Rioux, R. M, Habas, S. E, Komvopoulos, K, Yang, P, Somorjai, G. A

“…The adsorption and oxidation of CO on monolayer films of cubic Pt nanoparticles synthesized by a modified solution-phase polyol process were examined by sum…”
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Research in nanosciences : Great opportunity for catalysis science by SOMORJAI, G. A, BORODKO, Y. G

“…Catalysts represent the oldest commercial application of nanotechnology. It is suggested that the focus of catalysis research in the 21st century should be on…”
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Vibrational Properties of CO at the Pt(111)−Solution Interface:  the Anomalous Stark-Tuning Slope by Stamenkovic, V, Chou, K. C, Somorjai, G. A, Ross, P. N, Markovic, N. M

“…Vibrational properties of CO have been studied on Pt(111) in acid and alkaline electrolytes by synchronous measurements of CO oxidation current (0.5 mV/s) and…”
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The Evolution of Surface Chemistry. A Personal View of Building the Future on Past and Present Accomplishments by Somorjai, G. A

“…Surface chemistry, like other branches of physical chemistry, historically developed through macrosopic studies. These included measurements of…”
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High-Pressure Adsorption of Ethylene on Cubic Pt Nanoparticles and Pt(100) Single Crystals Probed by in Situ Sum Frequency Generation Vibrational Spectroscopy by Kweskin, S. J, Rioux, R. M, Song, H, Komvopoulos, K, Yang, P, Somorjai, G. A

“…A model catalytic system of a monolayer consisting of 9-nm average size, cubic, single-crystal Pt nanoparticles and poly(vinylpyrrolidone) (PVP) polymer…”
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Fabrication of platinum nanoparticles and nanowires by electron beam lithography (EBL) and nanoimprint lithography (NIL) : comparison of ethylene hydrogenation kinetics by CONTRERAS, A. M, GRUNES, J, YAN, X.-M, LIDDLE, A, SOMORJAI, G. A

“…Electron beam lithography (EBL), size reduction lithography (SRL), and nanoimprint lithography (NIL) have been utilized to produce platinum nanoparticles and…”
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Roadmap for catalysis science in the 21st century: a personal view of building the future on past and present accomplishments by Somorjai, G.A., McCrea, K.

“…In the past, the focus of research in catalysis science was activity to optimize turnover rates. In the future, selectivity to form the desired product without…”
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Parallel Fabrication of Sub-50-nm Uniformly Sized Nanoparticles by Deposition through a Patterned Silicon Nitride Nanostencil by Yan, X.-M, Contreras, A. M, Koebel, M. M, Liddle, J. A, Somorjai, G. A

“…Using low-pressure chemical vapor deposition of silicon dioxide, we have reduced the size of 56-nm features in a silicon nitride membrane, called a stencil,…”
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Entropically Mediated Polyolefin Blend Segregation at Buried Sapphire and Air Interfaces Investigated by Infrared−Visible Sum Frequency Generation Vibrational Spectroscopy by Kweskin, S. J, Komvopoulos, K, Somorjai, G. A

“…The segregation behavior of binary polymer blends at hydrophilic solid sapphire and air interfaces was investigated by infrared−visible sum frequency…”
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Formation of Platinum Silicide on a Platinum Nanoparticle Array Model Catalyst Deposited on Silica during Chemical Reaction by Zhu, Ji, Somorjai, G. A

“…Pt nanoparticle model catalysts with 28 ± 2 nm diameters and 100 ± 2 nm square periodicity have been fabricated with electron beam lithography on silica…”
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Molecular Characterization of Polymer and Polymer Blend Surfaces. Combined Sum Frequency Generation Surface Vibrational Spectroscopy and Scanning Force Microscopy Studies by Gracias, D. H, Chen, Z, Shen, Y. R, Somorjai, G. A

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Reaction kinetics and in situ sum frequency generation surface vibrational spectroscopy studies of cycloalkene hydrogenation/dehydrogenation on Pt(111): Substituent effects and CO poisoning by Yang, Minchul, Rioux, R.M., Somorjai, G.A.

“…The influence of substituent effects and CO poisoning were examined during the hydrogenation/dehydrogenation of cycloalkenes (cyclohexene and 1- and…”
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Continuum Force Microscopy Study of the Elastic Modulus, Hardness and Friction of Polyethylene and Polypropylene Surfaces by Gracias, D. H, Somorjai, G. A

“…The atomic force microscope (AFM) has been modified to a continuum force microscope (CFM) by using a tip of a large radius of curvature (1000 nm), in an…”
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Catalytic CO oxidation reaction studies on lithographically fabricated platinum nanowire arrays with different oxide supports by CONTRERAS, A. M, YAN, X.-M, KWON, S, BOKOR, J, SOMORJAI, G. A

“…Deep-ultraviolet lithography has been coupled with size-reduction and nanoimprint lithography to create high-density arrays of 20-nm wide platinum nanowires…”
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