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Recent advances in TiO2 modification for improvement in photocatalytic purification of indoor VOCs

文献类型： 外文期刊

作者： Lian Yu;Yajing Duan;Dabin Wang;Zhen Liang;Cunzhen Liang;Yafei Wang

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期刊名称： RSC Advances

ISSN： 2046-2069

年卷期： 2025 年 15 卷 34 期

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收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： TiO2-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 TiO2-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 TiO2 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 TiO2 immobilization are usually used to enhance the photocatalytic activity of TiO2. 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.

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