Citation: Lin He, Lin Chen, Rundong Chen, Xianlong Zhou, Shuai Zhang, Bingquan Xia. 二维Ta₂C助催化剂用于增强光催化H₂O₂合成及有机污染物降解[J]. Acta Physico-Chimica Sinica, ;2026, 42(11): 100367. doi: 10.1016/j.actphy.2026.100367 shu

二维Ta₂C助催化剂用于增强光催化H₂O₂合成及有机污染物降解

Lin He ¹ ,
Lin Chen ¹ ,
Rundong Chen ¹ ,
Xianlong Zhou ² ,
Shuai Zhang ^3,, ,
Bingquan Xia ^1,4,,

1.
State Key Laboratory of Green and Efficient Development of Phosphorus Resources, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, Hubei Province, China;
2.
Jiangsu Co-Innovation Centre of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu Province, China;
3.
School of Chemical Engineering, Adelaide University, Adelaide 5005, South Australia, Australia;
4.
Schulich School of Engineering, University of Calgary, Calgary T2N 1N4, Alberta, Canada

Corresponding author: Shuai Zhang, Bingquan Xia,
Received Date: 12 June 2026
Revised Date: 11 July 2026
Accepted Date: 12 July 2026

过氧化氢(H₂O₂)作为一种环境友好型氧化剂，其光催化合成与环境修复相结合是一种极具吸引力的策略。为解决传统光催化剂中电荷动力学缓慢和表面反应受限的问题，本研究探索了二维碳化钽(Ta₂C) MXene作为有效助催化剂，用于调控石墨相氮化碳(g-C₃N₄)的界面电子结构，从而实现高效H₂O₂制备以及盐酸四环素(TCH)的降解。系统表征和理论计算表明，两种组分之间显著的功函数差异诱导费米能级平衡，并促进内建电场的形成，从而驱动光生电子从g-C₃N₄定向迁移至Ta₂C，加速电荷分离并抑制电荷复合。优化后的g-C₃N₄/Ta₂C-6 (CT-6)复合材料实现了4584.7 μmol g^-1 h^-1的H₂O₂产率，并在1 h内降解了86.56%的TCH，显著优于原始g-C₃N₄。机理研究表明，H₂O₂主要通过两步单电子氧还原途径生成，反应中产生的活性氧物种在TCH降解中起关键作用。本研究证明了Ta₂C作为非贵金属助催化剂的潜力，并建立了MXene基异质结中界面电子结构、电荷转移动力学与光催化反应途径之间的明确关联，为设计高性能、多功能光催化剂提供了原子层面的见解和理论基础。
- H₂O₂production,
- Graphitic carbon nitride,
- Ta₂C MXene,
- Cocatalyst
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

二维Ta2C助催化剂用于增强光催化H2O2合成及有机污染物降解

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通讯作者: 陈斌, bchen63@163.com

二维Ta₂C助催化剂用于增强光催化H₂O₂合成及有机污染物降解