The assembly of monomicelles along onedimension(1D)to construct tubular or fibrous mesostructures is greatly desired but still challenging.Herein,we have demonstrated a facile strategy to synthesize 1D bimodal mesopor...The assembly of monomicelles along onedimension(1D)to construct tubular or fibrous mesostructures is greatly desired but still challenging.Herein,we have demonstrated a facile strategy to synthesize 1D bimodal mesoporous metal oxides(e.g.,WO_(3),WO_(3)/Pd,WO_(3)/Pd Cu,TiO_(2),and ZrO_(2))nanofibers(NFs)through assembling the organic-inorganic composite monomicelles in a beam stream generated via an electrospinning technique.This facile and repeatable methodology relies on the preparation of copolymer@metal-complex monomicelles in an anisotropic solution and oriented assembly of them in the beam stream by the selective evaporation of solvent.WO_(3)and its derivatives are chosen as the demo,which show a uniform continuous fibrous structure with dual mesopore sizes(~4.0 and 7.6 nm)and large surface area(~93.1 m^(2)g^(-1)).Benefitting from the unique textual structure,gas sensors made by Pd-decorated mesoporous WO_(3)NFs display outstanding comprehensive sensing performance to ethylbenzene,including a high sensitivity(52.5),an ultralow detection limit(50 ppb),and fast response/recovery kinetics(11/16 s)as well as an outstanding selectivity,which render them promising for rapid environmental monitoring.展开更多
基金supported by the Innovation Program of Shanghai Municipal Education Commission(2021-01-0700-03-E00109)the National Natural Science Foundation of China(51822202 and 51772050)+9 种基金the Science and Technology Commission of Shanghai Municipality(19520713200)Shanghai Sailing Program(20YF1400500)Shanghai Rising-Star Program(18QA1400100)the Key Basic Research Program of Science and Technology Commission of Shanghai Municipality(20JC1415300)Shanghai Natural Science Foundation(20ZR1401500)Shanghai Scientific and Technological Innovation Project(19JC1410400)the Fundamental Research Funds for the Central Universities(2232020D-02)the Youth Top-notch Talent Support Program of ShanghaiDHU Distinguished Young Professor Programfinancial support from Australian Research Council through an ARC Future Fellowship(FT180100387).
文摘The assembly of monomicelles along onedimension(1D)to construct tubular or fibrous mesostructures is greatly desired but still challenging.Herein,we have demonstrated a facile strategy to synthesize 1D bimodal mesoporous metal oxides(e.g.,WO_(3),WO_(3)/Pd,WO_(3)/Pd Cu,TiO_(2),and ZrO_(2))nanofibers(NFs)through assembling the organic-inorganic composite monomicelles in a beam stream generated via an electrospinning technique.This facile and repeatable methodology relies on the preparation of copolymer@metal-complex monomicelles in an anisotropic solution and oriented assembly of them in the beam stream by the selective evaporation of solvent.WO_(3)and its derivatives are chosen as the demo,which show a uniform continuous fibrous structure with dual mesopore sizes(~4.0 and 7.6 nm)and large surface area(~93.1 m^(2)g^(-1)).Benefitting from the unique textual structure,gas sensors made by Pd-decorated mesoporous WO_(3)NFs display outstanding comprehensive sensing performance to ethylbenzene,including a high sensitivity(52.5),an ultralow detection limit(50 ppb),and fast response/recovery kinetics(11/16 s)as well as an outstanding selectivity,which render them promising for rapid environmental monitoring.
