Sonochemistry synthesis of nanocrystals embedded in a MoO3–CdS core–shell photocatalyst with enhanced hydrogen production and photodegradation
2012; Royal Society of Chemistry; Volume: 22; Issue: 37 Linguagem: Inglês
10.1039/c2jm33432a
ISSN1364-5501
AutoresZaoyu Shen, Gang Chen, Yaoguang Yu, Qun Wang, Chao Zhou, Lin-Xing Hao, Yingxuan Li, Limin He, Rende Mu,
Tópico(s)Ga2O3 and related materials
ResumoCdS nanocrystals embedded in MoO3–CdS core–shell nanospheres have been successfully synthesized by a sonochemistry method at room-temperature and normal pressure without using any templates or surfactants. The unique core–shell nanostructures play a key role which results in a large increase in the photocatalytic activity for hydrogen production and photodegradation. In particular, the rate of MoO3–CdS core–shell photocatalytic hydrogen yield reached 5.25 mmol h−1 g−1 and exhibited a high apparent yield (28.86% at 420 nm) of hydrogen production without noble metal co-catalysts. Moreover, the MoO3–CdS core–shell composites also showed a very high decomposition rate of Rhodamine B (RhB) under the irradiation of visible-light (λ > 400 nm).
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