In situ construction of 0D CoWO4 modified 1D Mn0.47Cd0.53S for boosted visible-light photocatalytic H2 activity and photostability
| Autor: | Mingyu Dou, Xing-Liang Yin, Hua Yang, Haitao Zhao, Jianmin Dou, Dacheng Li, Hao Zhang, Guang Yang |
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| Rok vydání: | 2022 |
| Předmět: |
In situ
Materials science business.industry Visible light photocatalytic Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Colloid and Surface Chemistry Semiconductor X-ray photoelectron spectroscopy Chemical engineering Photocatalysis Nanorod business High-resolution transmission electron microscopy Hydrogen production |
| Zdroj: | Journal of Colloid and Interface Science. 610:1057-1066 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2021.11.159 |
| Popis: | To enhance the photocatalytic activity, loading proper semiconductor with high efficiency and low cost is one of the most valid approaches. Herein, various amounts of CoWO4 as a novel metal-free material were loaded on Mn0.47Cd0.53S (MCS) nanorods for photocatalytic hydrogen production reaction. The CoWO4/Mn0.47Cd0.53S-25 (CW/MCS-25) exhibits the highest hydrogen production rate of 41.53 mmol·h−1·g−1 in the Na2S/Na2SO3 system, which is about 2.68 times higher than that of pristine MCS. The Mapping and HRTEM reveals the deposited of CoWO4 on the MCS. The detailed analyses of XPS, EIS, TRPL spectra and transient photocurrent responses indicate that CoWO4 and MCS interacted closely and the photogenerated electrons of CoWO4 can be transferred into MCS. In particular, the introduction of CoWO4 can further transfer the photogenerated holes of MCS, thereby inhibiting the photocorrosion of MCS and improving photocatalytic activity. This work provides a reference for the exploration of noble metal-free composite material and shows great potential in the photocatalytic application. |
| Databáze: | OpenAIRE |
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