Magnesium doping to improve the light to heat conversion of OMS-2 for formaldehyde oxidation under visible light irradiation

作     者：Tingting Liu Pengfei Sun Wei Zhao Yingshuang Li Lujun Cheng Jiahai Fan Xiaohui Bi Xiaoping Dong Tingting Liu;Pengfei Sun;Wei Zhao;Yingshuang Li;Lujun Cheng;Jiahai Fan;Xiaohui Bi;Xiaoping Dong

作者机构：College of Chemistry and Chemical EngineeringZhejiang Sci-Tech UniversityHangzhou 310018China College of Environmental Science and EngineeringNankai UniversityTianjin 300071China Hangzhou Kaiming Catalyst Co.Ltd.Hangzhou 310013China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2024年第35卷第4期

页      面：193-198页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：financially supported from the Natural Science Foundation of China(No.51908491) the Ministry of Science and Technology Project of China(No.2017YFE0127400) the Zhejiang Provincial Natural Science Foundation of China(No.LY20B070001) 

主　　题：Mg doping Photothermal catalysis OMS-2 HCHO Reaction mechanism 

摘      要：Mg-doped manganese oxide octahedral molecular sieve(Mg-OMS-2)catalysts were prepared by hydrothermal *** photothermal degradation performance of these catalysts for formaldehyde(HCHO)in batch system and continuous system was *** light absorption of OMS-2 was increased by Mg-doped,especially for near infrared light,which promoted surface temperature reach a maximum of 214.8℃ under xenon *** this temperature,the reinforced surface lattice oxygen and oxygen vacancy that formed by lattice distortion via Mg-doped were *** best HCHO elimination efficiency was achieved over Mg_(0.2)/OMS-2 catalyst with Mg^(2+)/Mn^(2+)=1/5,which could reduce HCHO from 250 ppm to 10 ppm within 20 *** in situ DRIFTS was also carried out to monitor the changes in the content of reaction intermediates and analyze the degradation paths of *** was found the HCHO was attacked by formed·OH and·O^(2-) to generate formate species and carbonate species,and finally transformed to CO_(2) and H_(2)*** photothermal catalytic oxidation process exhibited a high efficiency purification of HCHO without the help of extra energy consumption.