异质结
光催化
煅烧
甲基橙
三聚氰胺
材料科学
化学工程
制作
复合数
催化作用
化学
光电子学
复合材料
有机化学
医学
替代医学
病理
工程类
作者
Lei Gou,Wenqi Wang,Enzhou Liu,Lei Xu,Rui He,Yang Yang
标识
DOI:10.1016/j.jallcom.2022.165698
摘要
The fabrication of heterojunction has been considered to be a promising approach to constructing effective photocatalysis systems. Herein, a series of CoTiO3/g-C3N4 heterojunctions denoted as CTO/CN-X were in-situ calcined by adjusting the weight percentage of the starting materials of core-shell Zif‐[email protected]2 and melamine.The selection of Zif‐[email protected]2 and melamine as starting materials merited a good dispersibility of CoTiO3 on the g-C3N4 sheets owing to the hydrogen bond interactions between melamine and functional groups from Zif‐[email protected]2. Attractively, CTO/CN-2 exhibited an excellent methyl orange degradation activity under visible light irradiation (λ > 420 nm). The degradation process was proved to be a first order kinetics with a kinetics constant of 0.990820.99082 h−1, which was 38.1, 6.1 times that of g-C3N4 and CoTiO3, respectively. Further investigation reveals revealed that CTO/CN adopted a S-scheme charge transfer route that simultaneously acquire high redox ability and broaden solar energy utilization. This work provides a feasible heterojunction construction strategy by using MOFs as precursors.
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