In situ sulfur-doped mesoporous tungsten oxides for gas sensing toward benzene series  

作　　者：Yu Deng Yan Liu Yonghui Deng Jinsheng Cheng Yidong Zou Wei Luo 

机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China [2]Department of Chemistry,State Key Laboratory of Molecular Engineering of Polymers,Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,iChEM,Fudan University,Shanghai 200433,China [3]Department of Polymeric Materials,School of Materials Science and Engineering,Tongji University,Shanghai 201804,China [4]Henry-Fork School of Food Sciences,Shaoguan University,Shaoguan 512005,China [5]State Key Lab of Transducer Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China

出　　处：《Chinese Chemical Letters》2024年第7期502-507,共6页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22125501,U22A20152,22105043,52225204,52173233);Key Basic Research Program of Science and Technology Commission of Shanghai Municipality(No.20JC1415300);the state key laboratory of Transducer Technology of China(No.SKT2207);the Fundamental Research Funds for the Central Universities(No.20720220010)。

摘　　要：Benzene series as highly toxic gases have inevitably entered human life and produce great threat to human health and ecological environment,and thus it is distinctly meaningful to monitor benzene series with quickly,real-time and efficient technique.Herein,novel sulfur-doped mesoporous WO_(3)materials were synthesized via classical in-situ solvent evaporation induced co-assembly strategy combined with doping engineering,which possessed highly crystallized frameworks,high specific surface area(40.9–63.8 m^(2)/g)and uniform pore size(~18 nm).Benefitting from abundant oxygen vacancy and defects via S-doping,the tailored mesoporous S/m WO_(3)exhibited excellent benzene sensing performance,including high sensitivity(50 ppm vs.48),low detection limit(ca.500 ppb),outstanding selectivity and favorable stability.In addition,the reduction of band gap resulted from S-doping promotes the carrier migration in the sensing materials and the reaction at the gas–solid sensing interfaces.It provides brand-new approach to design sensitive materials with multiple reaction sites.

关 键 词：Mesoporous materials Benzene series Tungsten oxides Sulfur doping Gas sensor 

分 类 号：TQ136.13[化学工程—无机化工]