作者：
Guijun Fan;Yacong Guo;Shaohua Chai;Le Zhang;Jian Guan;...
通讯作者：
Ning Han;Yunfa Chen
作者机构：
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
College of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Key Laboratory of Science and Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 361021, China
Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, China
通讯机构：
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
College of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Key Laboratory of Science and Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 361021, China
语种：
英文
关键词：
MnO2,Ozone oxidation,HCHO oxidation,In-situ DRIFTS
期刊：
环境科学学报(英文版)
ISSN：
1001-0742
年：
2025
卷：
147
页码：
642-651
摘要：
Nowadays, it is still a challenge to prepared high efficiency and low cost formaldehyde (HCHO) removal catalysts in order to tackle the long-living indoor air pollution. Herein, δ-MnO2 is successfully synthesized by a facile ozonation strategy, where Mn2+ is oxidized by ozone (O3) bubble in an alkaline solution. It presents one of the best catalytic properties with a low 100% conversion temperature of 85°C for 50 ppm of HCHO under a GHSV of 48,000 mL/(g·hr). As a comparison, more than 6 times far longer oxidation time is needed if O3 is replaced by O2. Characterizations show that ozonation process generates a different intermediate of tetragonal β-HMnO2, which would f...
