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https://hdl.handle.net/2440/100941
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Type: | Journal article |
Title: | Enhanced visible-light photocatalytic H₂ production by ZnₓCd₁−ₓS modified with earth-abundant nickel-based cocatalysts |
Other Titles: | Enhanced visible-light photocatalytic H(2) production by Zn(x)Cd(1)-(x)S modified with earth-abundant nickel-based cocatalysts |
Author: | Ran, J. Zhang, J. Yu, J. Qiao, S. |
Citation: | ChemSusChem: chemistry and sustainability, energy and materials, 2014; 7(12):3426-3434 |
Publisher: | Wiley |
Issue Date: | 2014 |
ISSN: | 1864-5631 1864-564X |
Statement of Responsibility: | Jingrun Ran, Jun Zhang, Jiaguo Yu, and Shi Zhang Qiao |
Abstract: | The application of various earth-abundant Ni species, such as NiS, Ni, Ni, OH, and NiO, as a co-catalyst in a ZnxCd, xS system for visible-light photocatalytic H, production was investigated for the first time. The loading of Ni or NiS enhanced the photocatalytic activity of ZnxCd, xS because they could promote the electron transfer at the interface with ZnxCd, xS and catalyze the H, evolution. Surprisingly, Ni, OH, -loaded ZnxCd, xS exhibits a very high photocatalytic H, -production rate of, μmol h, g, with a quantum efficiency of, ., at, nm, which represents one of the most efficient metal sulfide photocatalysts without a Pt co-catalyst to date. This outstanding activity arises from the pronounced synergetic effect between Ni, OH, and metallic Ni formed in situ during the photocatalytic reaction. However, the loading of NiO deactivated the activity of ZnxCd, xS because of their unmatched conduction band positions. This paper reports the optimization of the ZnxCd, xS system by selecting an appropriate Ni-based co-catalyst, Ni, OH, from a series of Ni species to achieve the highest photocatalytic H, -production activity for the first time and also reveals the roles of these Ni species in the photocatalytic activity. |
Keywords: | heterogeneous catalysis; hydrongen; nickel; photochemistry; water splitting |
Rights: | © 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
DOI: | 10.1002/cssc.201402574 |
Grant ID: | http://purl.org/au-research/grants/arc/DP1095861 http://purl.org/au-research/grants/arc/DP130104459 |
Published version: | http://dx.doi.org/10.1002/cssc.201402574 |
Appears in Collections: | Aurora harvest 7 Chemical Engineering publications |
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