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- Title
Flower ball MoS<sub>2</sub> embedded in sheet-like Sm<sub>2</sub>WO<sub>6</sub> to construct p–n heterojunction for photocatalytic hydrogen evolution.
- Authors
Li, Zezhong; Xu, Jing; Ma, Yongqiang; Ma, Yue; Liu, Zhenlu
- Abstract
Photocatalytic hydrogen production is one of the effective ways of global energy conservation and emission reduction. Herein, we report the successful embedding of flower ball MoS2 into Sm2WO6 using the hydrothermal method, and p-n heterojunction is obtained successfully. Due to the narrow band gap of MoS2, the Sm2WO6/ MoS2 composite photocatalyst effectively improves the photogenerated carrier separation. The better redox capacity of Sm2WO6 itself also promotes the reduction capacity of Sm2WO6/MoS2. The petals on MoS2 are closely bound to Sm2WO6, which enhances the electron transport efficiency and is one of the main factors for improving photocatalytic hydrogen evolution (HER). To explore the performance of Sm2WO6/ MoS2 by various means of representation. And the HER performance of Sm2WO6/ MoS2 is evaluated using eosin Y (EY) as sensitizer and TEOA as sacrifice agent. Compared with pure Sm2WO6, Sm2WO6/ MoS2 has improved HER performance, and its optimal activity is 142.7 µmol, which is nearly 140 times that of pure Sm2WO6. This study demonstrates a novel morphology design strategy for composite photocatalysts to promote efficient photocatalytic hydrogen production.
- Publication
Journal of Materials Science: Materials in Electronics, 2024, Vol 35, Issue 6, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-024-12171-w