Fluorescent lamp promoted formaldehyde removal over CeO_(2) catalysts at ambient temperature  

作　　者：Zhaoxiong Yan Gang Huang Geming Wang Ming Xiang Xiaofang Han Zhihua Xu 

机构地区：[1]Hubei Key Laboratory of Industrial Fume and Dust Pollution Control,Jianghan University,Wuhan 430056,China [2]School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China [3]School of Chemistry and Chemical Engineering,Wuhan University of Science and Technology,Wuhan 430081,China

出　　处：《Journal of Rare Earths》2022年第6期906-915,I0002,共11页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(21871111,21577046);Excellent Youth Foundation of Hubei Province of China(2019CFA078)。

摘　　要：Exploring an alternative strategy with high efficiency and low cost to abate formaldehyde(HCHO)in indoor environment,is of increasing significance for people’s health.CeO_(2) catalysts prepared by hydrothermal,precipitation and calcination methods were investigated for HCHO removal at ambient temperature.It is found that indoor fluorescent light visibly boosts the catalytic performance of CeO_(2) catalysts for HCHO decomposition at ambient temperature.Among the CeO_(2) catalysts,CeO_(2) prepared from hydrothermal method(CeO_(2)-H)exhibits a superior catalytic performance and an excellent durability by eight recycle times.Based on the characterization and analysis,the excellent catalytic performance of CeO_(2)-H is mainly contributed by its abundance of surface oxygen vacancies,and photogenerated electrons and hole activated by fluorescent light.This work shows a potential practicability in HCHO pollution elimination by taking full advantage of the existing lighting in indoor environments.

关 键 词：HCHO abatement CeO_(2)catalyst Preparation method Oxygen vacancy Fluorescent light irradiation Rare earths 

分 类 号：TQ426[化学工程] X51[环境科学与工程—环境工程]