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用于改善室内挥发性有机化合物光催化净化的TiO改性研究新进展。

Recent advances in TiO modification for improvement in photocatalytic purification of indoor VOCs.

作者信息

Yu Lian, Duan Yajing, Wang Dabin, Liang Zhen, Liang Cunzhen, Wang Yafei

机构信息

Department of Environmental Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 PR China

Laboratory of Quality & Safety Risk Assessment for Tobacco, Ministry of Agriculture, Tobacco Research Institute of Chinese Academy of Agricultural Sciences Qingdao 266101 PR China.

出版信息

RSC Adv. 2025 Aug 8;15(34):28204-28230. doi: 10.1039/d5ra02935j. eCollection 2025 Aug 1.

DOI:10.1039/d5ra02935j
PMID:40861292
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12377019/
Abstract

TiO-based photocatalytic oxidation technology has been widely used for the purification of indoor VOCs. However, the fast recombination rates of photoexcited charge carriers and wide energy band gaps have limited the practical application of TiO-based photocatalysts. Therefore, developing highly efficient catalysts is crucial for efficiently separating charge carriers and hindering their recombination, fully utilizing visible light. There are four main methods to improve TiO photocatalytic activity: increasing e-h separation rates and decreasing e-h recombination rates, increasing visible light photocatalytic activity, increasing surface-active sites, and increasing physicochemical stability. Metal and non-metal doping, coupling of different semiconductors, surface and interface design, and TiO immobilization are usually used to enhance the photocatalytic activity of TiO. This review aims to improve photocatalytic purification efficiency for indoor VOCs, and may provide new insights and guidance for the design of novel photocatalysts based on the intrinsic characteristics of VOCs, such as high volatility, low molecular weight, low polarity, high hydrophobicity, strong chemical activity and high toxicity.

摘要

基于TiO的光催化氧化技术已被广泛用于室内挥发性有机化合物（VOCs）的净化。然而，光激发电荷载流子的快速复合率以及宽能带隙限制了基于TiO的光催化剂的实际应用。因此，开发高效催化剂对于有效分离电荷载流子并阻碍其复合、充分利用可见光至关重要。提高TiO光催化活性主要有四种方法：提高电子 - 空穴分离率并降低电子 - 空穴复合率、提高可见光光催化活性、增加表面活性位点以及提高物理化学稳定性。金属和非金属掺杂、不同半导体的耦合、表面和界面设计以及TiO固定化通常用于增强TiO的光催化活性。本综述旨在提高室内VOCs的光催化净化效率，并可能基于VOCs的内在特性，如高挥发性、低分子量、低极性、高疏水性、强化学活性和高毒性，为新型光催化剂的设计提供新的见解和指导。

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