光催化
纳米复合材料
可见光谱
材料科学
氧化还原
电子转移
SN2反应
吸附
化学工程
纳米技术
催化作用
异质结
光化学
光电子学
化学
物理化学
立体化学
工程类
有机化学
冶金
作者
Zhi Yong Bao,Mengmeng Xing,Yu Zhou,Jun Lv,Dangyuan Lei,Yong Zhang,Jing Cai,Jiaheng Wang,Zhenjie Sun,Wenjuan Chen,Huimin Zhao,Xingyu Yang,Qizhen Han,Maofeng Zhang,Jiyan Dai,Yucheng Wu
标识
DOI:10.1002/adsu.202100087
摘要
The invention of defect-engineering motivated Z-scheme photocatalytic complexes has been treated as an emerging opportunity to accomplish effective carrier separation and electron transfer in hybrid heterojunctions, contributing a novel approach to accomplish modified visible-light driven photocatalytic performance compared to traditional nanocomposites. Exploring a desired carrier medium is crucial to support impressive electron transportation in Z-scheme photocatalytic nanocomposites. Here, the role that the Sn2+/Sn4+ redox couple plays in the photocatalytic process is systematically studied by taking the flower-like SnO2/layered g-C3N4 with deficient Sn2+ reactive sites as an example, where the defect-engineering can be introduced by heat treatment. The experimental results and computational simulations demonstrate that the deficient Sn2+ reactive sites can facilitate small molecule adsorption and boost the interfacial carrier separation and transfer in the photocatalytic procedure by bringing in the Sn2+/Sn4+ redox couple. This work provides a more in-depth exploration of Z-scheme photocatalytic-system construction and is helpful to the development of defect-engineering approaches with high photocatalysis performance.
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