Work function mediated interface charge kinetics for boosting photocatalytic water sterilization

被引：69

作者：

Liu, Zhaoli ^{[1
]}

Gao, Wenzhe ^{[1
]}

Liu, Lizhi ^{[4
]}

Luo, Shijia ^{[1
]}

Zhang, Cui ^{[1
]}

Yue, Tianli ^{[1
]}

Sun, Jing ^{[2
]}

Zhu, MingQiang ^{[3
]}

Wang, Jianlong ^{[1
]}

机构：

[1] Northwest A&F Univ, Coll Food Sci & Engn, 28 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China

[2] Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Qinghai Tibet Plateau Biol Re, Qinghai 810008, Peoples R China

[3] Northwest A&F Univ, Coll Mech & Elect Engn, Yangling 712100, Peoples R China

[4] Univ Eastern Finland, Dept Appl Phys, Kuopio 70210, Finland

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2023年 / 442卷

基金：

中国国家自然科学基金;

关键词：

Sustainable photocatalyst; Work function; Interface charge kinetics; Photocatalytic water disinfection; MXene;

D O I：

10.1016/j.jhazmat.2022.130036

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Photocatalytic sterilization is an eco-friendly strategy to utilize solar energy for treating water contaminated with resistant bacteria. Here, we propose interface engineering to induce an internal electric field (IEF) in leaf-like Ti3C2Tx/TiO2 based on the work function (phi) theory, which enhances photocatalytic sterilization performance by steering interface charge kinetics. Density functional theory (DFT) calculations and in situ irradiation X-ray photoelectron spectroscopy (ISI-XPS) results show that photogenerated charge carriers can be directionally separated by the IEF. The efficient charge kinetics benefits the reactive oxygen species (ROS) generation and hence a superior broad-spectrum sterilization performance. We employ the intrinsic physical characteristics of MXene to steer interface charge kinetics for photocatalysis, which exhibits great potential in water disinfection.

引用

页数：11

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