期刊
RARE METALS
卷 41, 期 7, 页码 2405-2416出版社
NONFERROUS METALS SOC CHINA
DOI: 10.1007/s12598-022-02011-3
关键词
Photocatalysis; Ti3C2 MXenes; Cocatalyst; Schottky junction; Heterojunction; Charge transfer channels
资金
- Natural Science Foundation of Jiangsu Province [BK20211280]
- National Natural Science Foundation of China [21975129]
By in situ growing a photocatalyst onto a two-dimensional MXene, a highly efficient charge separation and transfer was achieved. The photocatalytic degradation rate of the Bi12O17Cl2/Ti3C2 hybrid was found to be 9.7 times higher than that of bare Bi12O17Cl2 nanosheets.
Exploring efficient co-catalysts to accurately steer the charge separation of semiconductor photocatalysts is highly desired yet remains challenging. Here, we tackle the significant challenge by in situ growing the Bi12O17Cl2 photocatalyst onto two-dimensional (2D) Cl-terminated Ti3C2 MXene to construct 2D/2D heterojunction of Bi12O17Cl2 and Ti3C2. Firstly, 2D few-layered Ti3C2 MXene with chlorine groups has been successfully synthesized by Lewis acidic etching strategy with subsequent ultrasonic exfoliation. The grafting of chlorine terminations on the surface of MXene serves as nucleating centers and growth platform, resulting in the formation of strong interfacial bonds (Bi-Cl-Ti) between Bi12O17Cl2 and Ti3C2. These strong bonds can facilitate the separation and transfer of photo-generated charge carriers between Bi12O17Cl2 photocatalyst and Ti3C2 cocatalyst. As expected, the photocatalytic degradation rate of Bi12O17Cl2/Ti3C2 hybrids is 9.7 times higher than that of bare Bi12O17Cl2 nanosheets. This work not only exhibits a new design concept to effectively steer the charge separation for photocatalysis, but also gives a reference for constructing efficient MXene-based photocatalytic systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据