Self-assembly of a mesoporous ZnS/mediating interface/CdS heterostructure with enhanced visible-light hydrogen-production activity and excellent stability
Autor: | Min Han, Shuai-Lei Xie, Ya-Qian Lan, Shun-Li Li, Zhihui Dai, Jianchun Bao, Rong Chen, Kui Li |
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Rok vydání: | 2015 |
Předmět: | |
Zdroj: | Chemical Science. 6:5263-5268 |
ISSN: | 2041-6539 2041-6520 |
Popis: | We designed and successfully fabricated a ZnS/CdS 3D mesoporous heterostructure with a mediating Zn1−xCdxS interface that serves as a charge carrier transport channel for the first time. The H2-production rate and the stability of the heterostructure involving two sulfides were dramatically and simultaneously improved by the careful modification of the interface state via a simple post-annealing method. The sample prepared with the optimal parameters exhibited an excellent H2-production rate of 106.5 mmol h−1 g−1 under visible light, which was 152 and 966 times higher than CdS prepared using ethylenediamine and deionized water as the solvent, respectively. This excellent H2-production rate corresponded to the highest value among the CdS-based photocatalysts. Moreover, this heterostructure showed excellent photocatalytic stability over 60 h. |
Databáze: | OpenAIRE |
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