Mo-W<sub>18</sub>O<sub>49</sub>/ZnIn<sub>2</sub>S<sub>4</sub> Composites Synthesized by Metal Doping for Photocatalytic Hydrogen Evolution

Mo-W<sub>18</sub>O<sub>49</sub>/ZnIn<sub>2</sub>S<sub>4</sub> Composites Synthesized by Metal Doping for Photocatalytic Hydrogen Evolution

Utilizing two or more semiconductor materials with distinct geometric and electronic energy arrangements at the nanoscale to construct heterostructures is an important means for developing high-performance catalysts for photocatalytic hydrogen evolution. In this study, ZnIn<sub>2</sub>S&...

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Bibliographic Details
Main Authors: Ruiqin Sun, Yue Liu, Jiamei Yang, Tuoya Wuren, Haochen Duan, Zhibing Tan, Shiyong Yu
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Molecules
Subjects:
visible light
photocatalytic
Mo-W<sub>18</sub>O<sub>49</sub>
Znln<sub>2</sub>S<sub>4</sub>
Online Access:https://www.mdpi.com/1420-3049/30/7/1563
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Summary:Utilizing two or more semiconductor materials with distinct geometric and electronic energy arrangements at the nanoscale to construct heterostructures is an important means for developing high-performance catalysts for photocatalytic hydrogen evolution. In this study, ZnIn<sub>2</sub>S<sub>4</sub> serves as the primary catalyst carrier, while Mo-W<sub>18</sub>O<sub>49</sub> functions as the cocatalyst supported on the surface of ZnIn<sub>2</sub>S<sub>4</sub>. A series of ZnIn<sub>2</sub>S<sub>4</sub>/Mo-W<sub>18</sub>O<sub>49</sub> heterojunction composite materials were synthesized through a straightforward hydrothermal method. The ZnIn<sub>2</sub>S<sub>4</sub>/Mo-W<sub>18</sub>O<sub>49</sub> photocatalyst demonstrates exceptional photocatalytic hydrogen evolution activity. Notably, with a Mo-W<sub>18</sub>O<sub>49</sub> loading of 10%, the photocatalyst achieves optimal hydrogen evolution, yielding 2592.8 μmol g<sup>−1</sup>, which is 31 times greater than that of pure ZnIn<sub>2</sub>S<sub>4</sub>. Further characterized results of the samples showed that loading Mo-W<sub>18</sub>O<sub>49</sub> with an appropriate mass ratio on ZnIn<sub>2</sub>S<sub>4</sub> can increase the electron transfer rate, which facilitates reducing the recombination probability of photo-generated electrons and holes, thus improving hydrogen evolution efficiency.
ISSN:1420-3049

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