Dual-Modified Cu<sub>2</sub>S with MoS<sub>2</sub> and Reduced Graphene Oxides as Efficient Photocatalysts for H<sub>2</sub> Evolution Reaction
Noble metal-free cocatalysts have drawn great interest in accelerating the catalytic reactions of metal chalcogenide semiconductor photocatalyst. In particular, great efforts have been made on modifying a semiconductor with dual cocatalysts, which show synergistic effect of a fast transfer of excito...
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| Autores principales: | , , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/2201c18bfff9485bb5f5206eaac8783c |
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| Sumario: | Noble metal-free cocatalysts have drawn great interest in accelerating the catalytic reactions of metal chalcogenide semiconductor photocatalyst. In particular, great efforts have been made on modifying a semiconductor with dual cocatalysts, which show synergistic effect of a fast transfer of exciton and energy simultaneously. Herein, we report the dual-modified Cu<sub>2</sub>S with MoS<sub>2</sub> and reduced graphene oxides (Cu<sub>2</sub>S-MoS<sub>2</sub>/rGO). The in situ growth of Cu<sub>2</sub>S nanoparticles in the presence of MoS<sub>2</sub>/rGO resulted in high density of nanoscale interfacial contacts among Cu<sub>2</sub>S nanoparticles, MoS<sub>2,</sub> and rGO, which is beneficial for reducing the photogenerated electrons’ and holes’ recombination. The Cu<sub>2</sub>S-MoS<sub>2</sub>/rGO system also demonstrated stable photocatalytic activity for H<sub>2</sub> evolution reaction for the long term. |
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