高等学校化学学报2025，Vol.46Issue(5)：92-99,8.DOI:10.7503/cjcu20240571
二氧化钛表面浸润性调控增强光催化氧化反应性能
Surface Wettability Regulation of Titanium Dioxide for Enhanced Photocatalytic Oxidation Reaction Performance
摘要
Abstract
The reaction interface microenvironment is an important factor that affects photocatalytic reaction perfor-mance.In this study,a highly efficient triphase interface reaction system was constructed by regulating the surface wettability for photocatalytic oxidation of organic compounds.Titanium dioxide(TiO2)nanoparticle is used as a model photocatalyst,polydimethylsiloxane(PDMS)is grafted onto the surface to enhance the hydrophobicity.The results show that the presence of hydrophobic a PDMS layer enables the formation of a gas-liquid-solid triphase coexisting microenvironment at the reaction interface,which increases the interfacial oxygen(O2)concentration.Meanwhile,the hydrophobic surface layer enhances the adsorption capability of organic molecule.Such synergistic effect promotes the generation of superoxide radicals(•O-2)and hydroxyl radicals(•OH)and enhances the photocatalytic oxidation reaction.This work provides a novel approach to design and construction of efficient catalytic reaction systems.关键词
浸润性调控/反应界面微环境/三相界面/光催化/二氧化钛Key words
Wettability regulation/Reaction interface microenvironment/Triphase interface/Photocatalysis/TiO2分类
化学化工引用本文复制引用
卢净宇,刘志萍,盛夏,封心建..二氧化钛表面浸润性调控增强光催化氧化反应性能[J].高等学校化学学报,2025,46(5):92-99,8.基金项目
国家自然科学基金(批准号:21988102,51772198,21975171)资助. Supported by the National Natural Science Foundation of China(Nos.21988102,51772198,21975171). （批准号:21988102,51772198,21975171）
