Journal ArticleDOI
New Reaction Pathway Induced by Plasmon for Selective Benzyl Alcohol Oxidation on BiOCl Possessing Oxygen Vacancies.
TLDR
A new plasmonic catalyst of Au supported on BiOCl containing oxygen vacancies photocatalyzes selective benzyl alcohol oxidation with O2 under visible light through synergistic action of plAsmonic hot electrons and holes.Abstract:
Selective organic transformation under mild conditions constitutes a challenge in green chemistry, especially for alcohol oxidation, which typically requires environmentally unfriendly oxidants. Here, we report a new plasmonic catalyst of Au supported on BiOCl containing oxygen vacancies. It photocatalyzes selective benzyl alcohol oxidation with O2 under visible light through synergistic action of plasmonic hot electrons and holes. Oxygen vacancies on BiOCl facilitate the trapping and transfer of plasmonic hot electrons to adsorbed O2, producing •O2– radicals, while plasmonic hot holes remaining on the Au surface mildly oxidize benzyl alcohol to corresponding carbon-centered radicals. The hypothesized concerted ring addition between these two radical species on the BiOCl surface highly favors the production of benzaldehyde along with an unexpected oxygen atom transfer from O2 to the product. The results and understanding acquired in this study, based on the full utilization of hot charge carriers in a pla...read more
Citations
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Journal ArticleDOI
Surface-Plasmon-Driven Hot Electron Photochemistry
TL;DR: This review sums up recent theoretical and experimental approaches for understanding the underlying photophysical processes in hot electron generation and discusses various electron-transfer models on both plasmonic metal nanostructures and plasMonic metal/semiconductor heterostructure.
Journal ArticleDOI
Oxygen Vacancy-Mediated Photocatalysis of BiOCl: Reactivity, Selectivity, and Perspectives.
TL;DR: This Review endeavors to clarify the inherent functionality of OVs in photocatalysis at the surface molecular level using 2D BiOCl as the platform, and offers new perspectives and guidelines for the rational design of catalysts with satisfactory performance.
Journal ArticleDOI
A Hierarchical Z‑Scheme α-Fe2O3/g-C3N4 Hybrid for Enhanced Photocatalytic CO2 Reduction
TL;DR: A hierarchical direct Z-scheme system consisting of urchin-like hematite and carbon nitride provides an enhanced photocatalytic activity of reduction of CO2 to CO, yielding a CO evolution rate of 27.2 times higher than that produced by g-C3 N4 alone.
Journal ArticleDOI
Defect engineering in photocatalytic materials
TL;DR: In this paper, the state-of-the-art progress on defect-engineered photocatalytic materials is reviewed and the future opportunities and challenges regarding defect engineering in photocatalysis are highlighted.
Journal ArticleDOI
Light-Switchable Oxygen Vacancies in Ultrafine Bi 5 O 7 Br Nanotubes for Boosting Solar-Driven Nitrogen Fixation in Pure Water
Shengyao Wang,Shengyao Wang,Shengyao Wang,Xiao Hai,Xiao Hai,Xing Ding,Kun Chang,Yonggang Xiang,Xianguang Meng,Xianguang Meng,Zixin Yang,Hao Chen,Hao Chen,Jinhua Ye,Jinhua Ye,Jinhua Ye +15 more
TL;DR: This study shows the first synthesis of self-assembled 5 nm diameter Bi5 O7 Br nanotubes with strong nanotube structure, suitable absorption edge, and many exposed surface sites, which are favorable for furnishing sufficient visible light-induced OVs to realize excellent and stable photoreduction of atmospheric N2 into NH3 in pure water.
References
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Plasmonics for improved photovoltaic devices
Harry A. Atwater,Albert Polman +1 more
TL;DR: Recent advances at the intersection of plasmonics and photovoltaics are surveyed and an outlook on the future of solar cells based on these principles is offered.
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Plasmon-induced hot carrier science and technology
TL;DR: Recent advances in the understanding and application of plasmon-induced hot carrier generation are discussed and some of the exciting new directions for the field are highlighted.
Journal ArticleDOI
Solvent-Free Oxidation of Primary Alcohols to Aldehydes Using Au-Pd/TiO2 Catalysts
Dan I. Enache,Jennifer K. Edwards,Philip Landon,Benjamin Solsona-Espriu,Albert Frederick Carley,Andrew A. Herzing,Masashi Watanabe,Christopher J. Kiely,David W. Knight,Graham J. Hutchings +9 more
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Journal ArticleDOI
Oxidation of Alcohols with Molecular Oxygen on Solid Catalysts
Tamas Mallat,Alfons Baiker +1 more
TL;DR: It is considered more feasible that the rate-deter-mining step is the cleavage of the C-H bond at the R-carbon atom, and the active site consists of an ensemble of metallic Auatoms and a cationic Au.
Journal ArticleDOI
Surface photovoltage phenomena: theory, experiment, and applications
Leeor Kronik,Yoram Shapira +1 more
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