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- W2944077505 abstract "CoO nanocrystal is a well-known photocatalyst for overall water splitting; however it suffers from a very short lifetime of only 1 h. The poor stability is derived from carrier recombination-induced thermal oxidation. Amorphous materials are generally omitted from photocatalysts due to the tailing effect. Here, we report that efficient solar overall water splitting into H2 and O2 with an expected 2:1 stoichiometry is achieved by two-dimensional amorphous CoO nanoflakes without any cocatalysts or scavengers, and no deactivation is detected even after working for 120 h. We also establish that the mediation of mid-gap states resulting from the amorphization is responsible for the carrier separation and consequent high stability. Further, graphene oxide is grafted to construct a bionic Z-scheme structure, promoting the gases evolution rates by a factor of 13. Overall, these findings reveal the potential of CoO for practical applications in the future hydrogen economy, and shed new light on the design of novel amorphous photocatalysts." @default.
- W2944077505 created "2019-05-16" @default.
- W2944077505 creator A5011008076 @default.
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- W2944077505 date "2019-04-01" @default.
- W2944077505 modified "2023-10-01" @default.
- W2944077505 title "Two-dimensional amorphous CoO photocatalyst for efficient overall water splitting with high stability" @default.
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- W2944077505 doi "https://doi.org/10.1016/j.jcat.2019.03.025" @default.
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