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Erschienen in: Journal of Materials Science 5/2021

20.10.2020 | Energy materials

High photocatalytic activity of Cu2O embedded in hierarchically hollow SiO2 for efficient chemoselective hydrogenation of nitroarenes

verfasst von: Zhengliang Yin, Yingguan Xiao, Xiong Wan, Ying Jiang, Gang Chen, Qingye Shi, Shunsheng Cao

Erschienen in: Journal of Materials Science | Ausgabe 5/2021

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Abstract

Photocatalytic organic conversion is a crucial process in the hydrogenation of nitroarenes, but harsh reaction conditions such as long reaction time, high hydrogen pressure, and organic medium still need to be considerably overcome under visible-light irradiation. Here, we have constructed a transition metal oxide photocatalyst by embedding low-cost Cu2O with strong visible-light absorption into hierarchically hollow SiO2 sphere (SiO2-Cu2O@SiO2) that can suppress the escape of photogenerated atomic hydrogen and promote the contact probability between hydrogen atom and nitroarene molecules due to confinement effect. Remarkably, the SiO2-Cu2O@SiO2 photocatalyst can exhibit efficient chemoselectivity toward the hydrogenation of various nitroarenes in an aqueous system at ambient conditions, successfully working out the requirement of strict hydrogenation conditions, especially for organic medium over almost all of the reported photocatalysts. Notably, quantitative aniline can be produced for the visible-light catalytic reduction of nitroarenes, suggesting a considerable potential for industrial applications.

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Metadaten
Titel
High photocatalytic activity of Cu2O embedded in hierarchically hollow SiO2 for efficient chemoselective hydrogenation of nitroarenes
verfasst von
Zhengliang Yin
Yingguan Xiao
Xiong Wan
Ying Jiang
Gang Chen
Qingye Shi
Shunsheng Cao
Publikationsdatum
20.10.2020
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 5/2021
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-020-05449-x

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