K
Kimberly A. Gray
Researcher at Northwestern University
Publications - 168
Citations - 11759
Kimberly A. Gray is an academic researcher from Northwestern University. The author has contributed to research in topics: Photocatalysis & Anatase. The author has an hindex of 48, co-authored 162 publications receiving 10828 citations. Previous affiliations of Kimberly A. Gray include Northwest University (United States) & Argonne National Laboratory.
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Explaining the Enhanced Photocatalytic Activity of Degussa P25 Mixed-Phase TiO2 Using EPR
TL;DR: In this paper, the role of rutile in mixed-phase titania photocatalyst was investigated by EPR spectroscopy, showing that the transition points between these two phases allow for rapid electron transfer from pure-phase rutiles to anatase.
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Photoreactive TiO2/Carbon Nanotube Composites: Synthesis and Reactivity
TL;DR: A mechanism for the enhanced reactivity is proposed in which electrons are shuttled from TiO2 particles to the SWCNTs as a result of an optimalTiO2/ CNT arrangement that stabilizes charge separation and reduces charge recombination.
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Minimizing Graphene Defects Enhances Titania Nanocomposite-Based Photocatalytic Reduction of CO2 for Improved Solar Fuel Production
TL;DR: It is shown that nanocomposites based on the less defective solvent-exfoliated graphene exhibit a significantly larger enhancement in CO(2) photoreduction, especially under visible light.
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Role of Water and Carbonates in Photocatalytic Transformation of CO2 to CH4 on Titania
Nada M. Dimitrijevic,K. V. Baiju,Oleg G. Poluektov,Tijana Rajh,Kimberly A. Gray,Haiying He,Peter Zapol +6 more
TL;DR: Using the electron paramagnetic resonance technique, the multiple roles of water and carbonates in the overall photocatalytic reduction of carbon dioxide to methane over titania nanoparticles are elucidated.
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Recombination pathways in the Degussa P25 formulation of TiO2: surface versus lattice mechanisms.
TL;DR: It is experimentally shown that upon band-gap illumination holes appear at the surface and preferentially recombine with electrons in surface trapping sites, which indicates that in mixed-phase TiO2, such as Degussa P25, a random flight mechanism of recombination predominates.