Polyoxometalate Template-Based Synthetic Strategy to Prepare Ni, Mo Co-Doped CdS for Efficient Photocatalytic Hydrogen Evolution from Water Splitting

In this work, a novel polyoxometalate template-based strategy was applied to construct the bi-metal-doped CdS photocatalysts. NiMo6 polyoxometalate template precursor was applied for the preparation of Ni, Mo co-doped CdS photocatalysts (NiMo-CdS). The structures of the materials were explored by XR...

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Bibliographic Details
Published inCatalysts Vol. 10; no. 12; p. 1478
Main Authors Yan, Jiawei, Wei, Zhidong, Xu, Meiqi, Jiang, Zhi, Shangguan, Wenfeng
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2020
Subjects
Atoms & subatomic particles
Catalysts
CdS
Chemical reactions
Electromagnetic absorption
Hydrogen
Hydrogen evolution
Light
Molybdenum
Morphology
MoS2
Nickel
Noble metals
Photocatalysis
Photocatalysts
photocatalytic
Platinum
Polyoxometallates
Scanning electron microscopy
Water splitting
X ray photoelectron spectroscopy
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Summary:In this work, a novel polyoxometalate template-based strategy was applied to construct the bi-metal-doped CdS photocatalysts. NiMo6 polyoxometalate template precursor was applied for the preparation of Ni, Mo co-doped CdS photocatalysts (NiMo-CdS). The structures of the materials were explored by XRD, SEM, HRTEM, HAADF, element mapping, XPS, Raman spectrum and UV-vis DRS. Moreover, the results of the UV-vis spectrum showed that NiMo-CdS exhibited an enhanced performance on light absorption. The results of photocatalytic hydrogen evolution from water splitting demonstrated that the NiMo-CdS showed higher efficiency on hydrogen evolution than noble-metal Pt-doped CdS. The reason could be ascribed to the enhanced light absorption ability and charge separation after Ni and Mo were introduced, which could also act as co-catalysts. The apparent quantum yield (AQY) efficiency could reach 42% at 365 nm. This work proposed a novel and inexpensive method to synthesize the bi-metal (Ni, Mo) decorated CdS photocatalysts for efficient hydrogen evolution from water splitting.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal10121478