High catalytic activity for formaldehyde oxidation of an interconnected network structure composed of δ-MnO_(2) nanosheets and γ-MnOOH nanowires  

作　　者：Ying Tao Rong Li Ai-Bin Huang Yi-Ning Ma Shi-Dong Ji Ping Jin Hong-Jie Luo 

机构地区：[1]State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050.People's Republic of China [2]Institute for the Conservation of Culture Heritage,Shanghai University,Shanghai 200444.People's Republic of China [3]University of Chinese Academy of Sciences,Beijing 100049,People's Republic of China [4]Department of Criminal Science and Technology,Jiangsu Police Institute,Nanjing 210031,People's Republic of China

出　　处：《Advances in Manufacturing》2020年第4期429-439,共11页先进制造进展（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Grant No.51572284);the Natural Science Foundation of Jiangsu Province of China(Grant No.BK20190809);the Scientific Research Foundation of the Jiangsu Police Institute(Grant No.JSPI19GKZL401).

摘　　要：Among the transition metal oxide catalysts,manganese oxides have great potential for formaldehyde(HCHO)oxidation at ambient temperature because of their high activity,nontoxicity,low cost,and polybasic morphologies.In this work,a MnO_(2)-based catalyst(M-MnO_(2))with an interconnected network structure was successfully synthesized by a one-step hydrothermal method.The M-MnO_(2) catalyst was composed of the main catalytic agent,δ-MnO_(2) nanosheets,dispersed in a nonactive framework material of γ-MnOOH nanowires.The catalytic activity of M-MnO_(2) for HCHO oxidation at room temperature was much higher than that of the pure δ-MnO_(2) nanosheets.This is attributed to the special interconnected network structure.The special interconnected network structure has high dispersion and specific surface area,which can provide more surface active oxygen species and higher surface hydroxyl groups to realize rapid decomposition of HCHO.

关 键 词：MnO_(2) FORMALDEHYDE Catalytic oxidation Hydrothermal synthesis 

分 类 号：O64[理学—物理化学]