Journal
NATURE COMMUNICATIONS
Volume 11, Issue 1, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41467-020-18679-z
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Funding
- National Natural Science Foundation of China [51732011, 21431006, 21761132008]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [21521001]
- Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-SLH036]
- Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS [2015HSC-UE007]
- China Postdoctoral Science Foundation [2017M622016, 2017LH006]
- Ministry of Science and Technology of the People's Republic of China [2018YFA0208702]
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Although solar-driven water splitting on semiconductor photocatalysts is an attractive route for hydrogen generation, there is a lack of excellent photocatalysts with high visible light activity. Due to their tunable bandgaps suitable for superior visible-light absorption, copper-based quaternary sulfides have been the important candidates. Here, we first assessed the preferred facet of wurtzite Cu-Zn-In-S for photocatalytic hydrogen evolution reaction using the relevant Gibbs free energies determined by first principle calculation. We then developed a colloidal method to synthesize single crystalline wurtzite Cu-Zn-In-S nanobelts (NBs) exposing (0001) facet with the lowest reaction Gibbs energy, as well as Cu-Zn-Ga-S NBs exposing (0001) facet. The obtained single crystalline Cu-Zn-In-S and Cu-Zn-Ga-S NBs exhibit superior hydrogen production activities under visible-light irradiation, which is composition-dependent. Our protocol represents an alternative surface engineering approach to realize efficient solar-to-chemical conversion of single crystalline copper-based multinary chalcogenides.
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