Efficiently photothermal conversion in a MnO_(x)-based monolithic photothermocatalyst for gaseous formaldehyde elimination

作     者：Pengfei Sun Huijia Yu Tingting Liu Yingshuang Li Zhongsen Wang Yufei Xiao Xiaoping Dong Pengfei Sun;Huijia Yu;Tingting Liu;Yingshuang Li;Zhongsen Wang;Yufei Xiao;Xiaoping Dong

作者机构：Department of ChemistryKey Laboratory of Surface&Interface Science of Polymer Materials of Zhejiang ProvinceZhejiang Sci-Tech UniversityHangzhou 310018China 

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

年 卷 期：2022年第33卷第5期

页      面：2564-2568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] 

基　　金：financially supported from the National Key Re-search and Development Program of China(No.2017YFE0127400) the Natural Science Founding of China(No.51908491) the Zhejiang Provincial Natural Science Foundation of China(No.LY20B070001) Science Fund of Zhejiang Sci-Tech University(No.21062255-Y) 

主　　题：Photothermal catalytic Melamine sponge Graphene oxide MnO_(x) Formaldehyde 

摘      要：Volatile organic compound(VOC)pollution has a serious impact on human and urgently needs to be controlled through the development of new methods and catalytic *** with traditional thermal catalytic oxidation,the synergistic photothermocatalysis is regarded as a green and environmen-tally friendly strategy for organic compound pollutant removal,which can promote spontaneous heating of the surface of catalysts to achieve thermal catalytic reaction conditions via harvesting light *** this paper,a monolithic photothermocatalyst was synthesized through coating graphene oxide(GO)and MnOx in turn on a commercially available melamine sponge,where the GO mainly acted as a photothermal conversion layer to heat the catalytically active MnO_(x).This monolithic catalyst presented excellent photo-induced activity for formaldehyde elimination under ambient conditions(∼90%degrada-tion ratio in 20 min for∼160 ppm initial concentration formaldehyde),and meanwhile possessed a high catalytic durability for multiple *** kinetic study demonstrated that this photothermocatalytic process followed a pseudo-second-order ***,we proposed a possible formaldehyde degrada-tion pathway based on in situ DRIFTS examination.