| Autor: |
Yilin Chen, Bizhou Lin, Bifen Gao, Weiwei Yang, Qianru Yao, Guohua Zhang, Shaofeng Jiang |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
RSC Advances. 5:5823-5829 |
| ISSN: |
2046-2069 |
| DOI: |
10.1039/c4ra11757c |
| Popis: |
CdS-pillared ZnCr–LDH nanohybrid was prepared by incorporating CdS nanoparticles into the interlayer of ZnCr–LDH nanosheets via an exfoliation–restacking route. The resultant nanohybrid exhibits an interlayer spacing of 2.50 nm and a mesoporous texture with a specific surface area of 86 m2 g−1. It was revealed that there exists a strong electronic coupling between the two components in the pillared heterostructure, which remarkably suppresses the photogenerated electron–hole recombination. The as-prepared nanohybrid displayed significantly enhanced photocatalytic activity. Its H2-evolution rates were as high as 374 μmol h−1 g−1 with a quantum efficiency of 42.6% and 2164 μmol h−1 g−1 with a quantum efficiency of 48.2% under visible and UV-visible light, respectively, which were far superior to those of its parents ZnCr–LDH and CdS. The present findings clearly demonstrate that the self-assembly of CdS–LDHs is quite effective in synthesizing novel LDHs-based visible-light-driven photocatalysts with high performance in hydrogen evolution from water splitting. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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