文献类型：期刊文献

英文题名：Inverse opal structured Pt/TiO2-MnOy photothermocatalysts for enhanced toluene degradation activity

作者：Chi, Zhili[1];Liu, Zhiyong[1];Liu, Wenbo[1];Cai, Jiaqi[1];Zhang, Yiyang[1];Dai, Yangmei[1];Zhang, Jinlong[1];Ye, Ziwei[1];Tian, Baozhu[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, Beijing, Peoples R China

年份：2024

卷号：12

期号：47

起止页码：32913

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20243116780507);WOS:【SCI-EXPANDED(收录号:WOS:001277975900001)】；

基金：This research was funded by the Shanghai Industrial Collaborative Innovation Project (XTCX-KJ-2022-2-01), National Natural Science Foundation of China (U1862112), Fundamental Research Funds for the Central Universities (JKD01241701, 222201717003, and 50321042017001), Shanghai Post-doctoral Excellence Program (2021111), and Shanghai Pujiang Program (23PJ1401900).

语种：英文

外文关键词：Biodegradation - Catalyst activity - Chemical activation - Image enhancement - Light absorption - Manganese compounds - Platinum - Rate constants - Toluene - Volatile organic compounds

摘要：Photothermocatalysis is gaining increasing scientific attention for its potential in alleviating the ever-worsening volatile organic compound (VOC) pollution. Herein, we fabricated inverse opal (IO) structured TiO2-MnOy photothermocatalysts whose photothermocatalytic toluene degradation performance varied significantly at different Ti-to-(Ti + Mn) ratios. The rate constant for photothermocatalytic toluene degradation for the best TiO2-MnOy sample was 11.3 times and 12.1 times higher than that of the TiO2 and MnOy sample, respectively, reaching 0.03812 min(-1). This high activity arose from the IO structure which contained abundant macropores and contributed to enhancement of catalytic activity by enhancing light absorption and toluene adsorption capability. Deposition of Pt nanoparticles which were dual-functional photo-thermal (co)catalysts led to further enhancement of toluene degradation activity by promoting the toluene adsorption on the MnOy surface and activating O-2 to form reactive oxygen species. Moreover, the formation of a Schottky junction between Pt and TiO2 also enhanced the charge separation and utilization efficiency, allowing for more efficient generation of active species for toluene activation and catalyst re-oxidation for achieving high toluene degradation activity.