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).
文摘利用胶束的一维(1D)定向组装来构建管状或纤维状的介孔材料具有重要的科学意义,但仍面临巨大挑战.本文中,我们提出了一种简单、普适的合成策略,通过静电纺丝产生的束流限域有机-无机复合胶束使其沿着1D方向组装,从而构建一系列双介孔金属氧化物纳米纤维(如WO_(3),WO_(3)/Pd,WO_(3)/Pd Cu,TiO_(2)和ZrO_(2)).这种方法主要依赖于共聚物@金属络合物复合胶束在各向异性溶液中的形成,然后通过溶剂的选择诱导使它们在束流中定向组装.以WO_(3)及其衍生物为例,所得到WO_(3)纤维显示出均一的连续纤维结构,具有双介孔尺寸(~4.0和7.6 n m)和较大的比表面积(~93.1 m^(2)g^(-1)).将钯修饰的介孔WO_(3)纳米纤维用于乙苯气体传感器,展现出了优异的综合传感性能,如高灵敏度(52.5)、超低浓度检测限(50 ppb)、快速的响应/恢复动力学(11/16 s)和优异的选择性,在环境快速监测方面显示了广阔的应用前景.