Critical influence of g-C3N4 self-assembly coating on the photocatalytic activity and stability of Ag/AgCl microspheres under visible light
Critical influence of g-C3N4 self-assembly coating on the photocatalytic activity and stability of Ag/AgCl microspheres under visible light
复制标题
g-C3N4自组装涂层对Ag/AgCl微球可见光下光催化活性和稳定性的关键影响
DOI：
10.1016/j.apcatb.2015.01.002
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发表时间：
2015-06-01
影响因子：
22.1
通讯作者：
Wang, Yangang
中科院分区：
文献类型：
--
作者：
Kang, Shifei;Fang, Yao;Wang, Yangang
采用简单的自组装方法在室温下制备了g-C3 N4/Ag/AgCl可见光催化剂。在扫描电子显微镜（SEM）和透射电子显微镜（TEM）图像上，催化剂显示出均匀的形貌和可控的涂层状态。宽的结构和表面表征表明，g-C3 N4的存在显着影响Ag/AgCl光催化剂的表面性质。可见光下，g-C3 N4的光催化活性与其包覆率有显著的关系，包覆率为1wt%时，其光催化活性最高。循环实验证实g-C3 N4-Ag/AgCl催化剂具有良好的上级循环性能和稳定性。这些结果表明，自组装g-C3 N4涂层处理的Ag/AgCl等离子体光催化剂的可见光驱动的光催化活性和稳定性的关键影响。光催化活性和稳定性的提高归因于稳定的g-C3 N4-Ag/AgCl异质结的形成，这导致了光生载流子的有效空间分离。(C)2015 Elsevier B. V.版权所有。
The g-C3N4 coated Ag/AgCl visible-light-driven photocatalysts were synthesized by a simple generic self-assembly approach at room temperature. The catalysts showed a uniform morphology with a controllable coating state on the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images. The wide structure and surface characterization showed that the presence of g-C3N4 notably affected the surface properties of Ag/AgCl photocatalysts. The photocatalytic activity was significantly dependent upon the coating ratio of g-C3N4 under visible light, while 1 wt% was the best coating ratio. Recycling experiments confirmed that the g-C3N4-Ag/AgCl catalysts had superior cycle performance and stability. These results suggested that the self-assembly g-C3N4 coating treatment had critical influence on the visible-light-driven photocatalytic activity and stability of Ag/AgCI plasmonic photocatalyst. The enhanced photocatalytic activity and stability could be ascribed to the formation of steady g-C3N4-Ag/AgCl heterojunction, which results in the efficient space separation of photo-induced charge carriers. (C) 2015 Elsevier B.V. All rights reserved.