Journal
APPLIED SURFACE SCIENCE
Volume 384, Issue -, Pages 161-174Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2016.04.084
Keywords
ZnIn2S4; Aromatic alcohol; Selective oxidation; Visible light; Photocatalysis
Categories
Funding
- Natural Science Foundation of China (NSFC) [51472005, 51172086, 21103060, 51272081]
- Natural Science Foundation of China [21473066]
- Natural Science Foundation of Anhui Province, China [1408085QB38]
- High Education Revitalization Plan of Anhui province, China
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A series of ternary chalcogenides, zinc indium sulphide (ZnIn2S4), were synthesized by a simple solvothermal method with different solvents. The structure, textural, and optical properties of the resulting materials were thoroughly characterized by several techniques. The as-prepared ZnIn2S4 samples could all be employed as excellent photocatalysts to activate O-2 for selective oxidation of aromatic alcohols to aromatic aldehydes under visible light illumination. The results showed that ZnIn2S4 prepared in ethanol solvent (ZIS-EtOH) exhibited the highest photocatalytic activity among the screened samples. The differences of photocatalytic performance for ZnIn2S4 samples prepared in different media were mainly attributed to the different levels of exposed {0001} special facets caused by the exposure extent of the basic crystal plane. In addition, O-.(2)- and positive holes were proved to be the main active species during the photocatalytic process. Combined with the previous reports, a possible photocatalytic mechanism for the selective oxidation of benzyl alcohol to benzaldehyde over ZnIn2S4 sample was proposed. (C) 2016 Elsevier B.V. All rights reserved.
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