Hydrothermal synthesis of CdS/Bi2MoO6 heterojunction photocatalysts with excellent visible-light-driven photocatalytic performance
Hydrothermal synthesis of CdS/Bi2MoO6 heterojunction photocatalysts with excellent visible-light-driven photocatalytic performance
复制标题
水热合成CdS/Bi2MoO6异质结光催化剂，具有优异的可见光驱动光催化性能
DOI：
10.1016/j.apsusc.2015.06.061
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发表时间：
2015-10-30
影响因子：
6.7
通讯作者：
Shi, Weidong
中科院分区：
文献类型：
--
作者：
Feng, Yi;Yan, Xu;Shi, Weidong
采用两步水热法制备了CdS/Bi 2 MoO 6异质结光催化剂。采用XRD、SEM、TEM、HRTEM、XPS、UV-vis和PL等物理化学手段对样品进行了表征。在可见光照射下（λ> 420 nm），该样品对不同种类的有机染料和四环素水溶液具有较高的光催化降解活性。CdS-2样品对罗丹明B（RhB）的最佳光催化降解效率分别是单独CdS和Bi 2 MoO 6的25.3和3.7倍。此外，通过不同活性物种的捕集实验，分析了其可能的光催化机理。结果表明，H（+）和O-中心点（2）-是RhB光催化降解的主要活性物种。此外，所制备的样品具有良好的稳定性和可回收性，这有利于其实际应用。(C)2015年由Elsevier B. V.出版
A novel CdS/Bi2MoO6 heterojunction photocatalysts were successfully prepared via two-step hydrothermal methods. The prepared samples were characterized by various physicochemical techniques, such as XRD, SEM, TEM, HRTEM, XPS, UV-vis and PL. The obtained samples exhibited highly photocatalytic activity toward the degradation of the different kinds of organic dyes and tetracycline in aqueous solution under visible light irradiation (lambda > 420 nm). The optimum photocatalytic efficiency of CdS-2 sample for the degradation rhodamine B (RhB) was about 25.3 and 3.7 times higher than that of individual CdS and Bi2MoO6, respectively. In addition, the possible photocatalytic mechanism was analyzed by different active species trapping experiments. The results indicated that the h(+) and O-center dot(2)- were the main active species for the photocatalytic degradation of RhB. Moreover, the prepared sample shows good stability and recyclability properties which are beneficial for its practical application. (C) 2015 Published by Elsevier B.V.