Oxygen-vacancy-induced O2 activation and electron-hole migration enhance photothermal catalytic toluene oxidation

• DOI: 10.1016/j.xcrp.2022.101011
• Publication Date: 2022-08-17T14:32:08Z
• Authors: Yang Yang; Shenghao Zhao; Fukun Bi; Jinfeng Chen; Yintao Li; Lifeng Cui; Jingcheng Xu; Xiaodong Zhang
• Keywords: 02 engineering and technology; 0210 nano-technology

The rapid elimination of volatile organic compounds and the intermediate analysis with efficient photothermal catalysis are great significance to environment. Oxygen vacancies (Vo) play a crucial role in structural modification performance improvement heterogeneous catalysts. Accordingly, here, abundant Vo sites introduced into Co3O4/TiO2 composite via treatment under H2 Ar flow at 200°C, catalytic toluene is significantly improved. molecular oxygen (O2) adsorbed by activated form reactive species for deep oxidation toluene. generated on unilateral side heterojunctions serves capture electrons break dynamic balance electron-hole pairs. excited trapped Vo, direct recombination pairs inhibited, thus promoting photochemical process. Moreover, synergy effect relationship between evolution intermediates transformation mechanism systematically studied.