Construction of Z scheme system of ZnIn2S4/RGO/BiVO4 and its performance for hydrogen generation under visible light
Construction of Z scheme system of ZnIn2S4/RGO/BiVO4 and its performance for hydrogen generation under visible light
复制标题
DOI：
10.1016/j.ijhydene.2017.02.091
复制
发表时间：
2017-07
影响因子：
7.2
通讯作者：
Rongshu Zhu;Fei Tian;G. Cao;F. Ouyang
中科院分区：
文献类型：
--
作者：
Rongshu Zhu;Fei Tian;G. Cao;F. Ouyang
通过三种方法构建了一系列Z图式体系，并在可见光照射下评价了其光催化析氢活性。通过将ZnIn_2S_4负载到BiVO_4上，可以构建Z型系统。本发明在可见光下成功实现了H2的析氢，无需提供牺牲剂，石墨烯作为固体电子介体时，活性大大提高。得到了最佳Z晶型体系为1. 0 La-ZnIn 2S 4/1. 5 RGO/1. 0 RuO 2/BiVO 4（1：5）。其光催化放氢活性和A.Q.Y.分别达到4.1 μmol g-1h和0.8%。通过XRD、拉曼光谱、SEM、BET、PL等分析手段对其进行了表征，并对催化机理进行了探讨。
A series of Z scheme systems are constructed in three ways and the photocatalytic H2evolution activities are evaluated under visible light irradiation. The Z scheme system can be constructed by loading ZnIn2S4onto BiVO4. The H2evolution is successfully realized under the visible light without providing a sacrificial agent, and the activity is greatly improved when the graphene is acted as a solid electron mediator. The best Z scheme system of 1.0La-ZnIn2S4/1.5RGO/1.0RuO2/BiVO4(1:5) is obtained. Its photocatalytic H2evolution activity and theA.Q.Y.reach 4.1 μmol g−1h and 0.8%, respectively. Furthermore, its property is characterized by various analysis techniques, such as XRD, Raman, SEM, BET and PL, and the catalytic mechanism is also discussed.