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Issue 9, 2017
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Enhanced photocatalytic activities of single-crystalline ZnGa2O4 nanoprisms by the coexposed {111} and {110} facets

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Abstract

Facet-control has been a fascinating method for preparation of highly active photocatalysts. Herein, we report the hydrothermal preparation of single-crystalline ZnGa2O4 nanoprisms with the {111} and {110} facets coexposed. Studies of their photocatalytic performance have revealed that the as-formed nanoprisms exhibit significantly enhanced photocatalytic activities compared with ZnGa2O4 nanocubes with only the {100} facets exposed and nanosheets with the {110} facets exposed for H2 evolution and contaminant degradation. Theoretical calculations combined with valence band XPS results indicate the formation of a surface heterojunction by the coexposed {111} and {110} facets, which promotes the photogenerated electron and hole migration to the {110} and {111} facets, respectively, and enhances the photocatalytic performance.

Graphical abstract: Enhanced photocatalytic activities of single-crystalline ZnGa2O4 nanoprisms by the coexposed {111} and {110} facets

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Publication details

The article was received on 27 Dec 2016, accepted on 08 Feb 2017 and first published on 10 Feb 2017


Article type: Paper
DOI: 10.1039/C6NR09930K
Nanoscale, 2017,9, 3206-3211

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    Enhanced photocatalytic activities of single-crystalline ZnGa2O4 nanoprisms by the coexposed {111} and {110} facets

    T. Zheng, Y. Xia, X. Jiao, T. Wang and D. Chen, Nanoscale, 2017, 9, 3206
    DOI: 10.1039/C6NR09930K

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