聚甲基丙烯酸甲酯包覆(CH_(3)NH_(3))PbBr_(3)纳米晶静电纺丝膜的制备及对氨气的荧光传感  

Preparation of polymethyl methacrylate‑coated(CH_(3)NH_(3))PbBr_(3)nanocrystalline electrospinning film and fluorescence sensing of ammonia

作　　者：卢姮 谭晓红 吴少如 周艳梅 黄国斌 张俊英 郑乔文 蔡志雄 李飞明 张茂升[1,2] LU Heng;TAN Xiao‑Hong;WU Shao‑Ru;ZHOU Yan‑Mei;HUANG Guo‑Bin;ZHANG Jun‑Ying;ZHENG Qiao‑Wen;CAI Zhi‑Xiong;LI Fei‑Ming;ZHANG Mao‑Sheng(College of Chemistry,Chemical Engineering and Environment,Minnan Normal University,Zhangzhou 363000,China;Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology,Minnan Normal University,Zhangzhou,Fujian 363000,China;College of Chemistry,Guangdong University of Petrochemical Technology,Maoming,Guangdong 525000,China;Institute of Food Safety and Environment Monitoring,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]闽南师范大学化学化工与环境学院,漳州363000 [2]闽南师范大学福建省现代分析科学与分离技术重点实验室,漳州363000 [3]广东石油化工学院化学学院,茂名525000 [4]福州大学食品安全与环境监测研究所,福州350108

出　　处：《无机化学学报》2023年第9期1757-1765,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金青年基金(No.21904055,22004055)资助。

摘　　要：采用原位合成法制备了聚甲基丙烯酸甲酯包覆MAPbBr_(3)纳米晶(MAPbBr_(3)@PMMA,MA=甲铵离子)静电纺丝膜。当氨气(NH_(3))通入MAPbBr_(3)@PMMA纤维膜时与MAPbBr_(3)中的MA发生取代,能显著降低MAPbBr_(3)@PMMA纤维的荧光强度,以此构建了基于MAPbBr_(3)@PMMA纤维荧光猝灭的NH_(3)传感器。通过扫描电镜、透射电镜、粉末X射线衍射和红外对静电纺丝膜的形貌和结构进行表征,通过紫外可见光谱、荧光光谱对其光学特性进行表征。结果表明,传感器的荧光强度与NH_(3)浓度在8~90 mg·L^(-1)之间呈现出良好的线性关系(r=0.9959),NH_(3)的检出限低(3 mg·L^(-1)),且具有良好的重现性和选择性。在实际样品气体的测定中,加标回收率为92.2%~102.1%,相对标准偏差(RSD)为1.8%~3.2%。In this work,a novel polymethyl methacrylate‑coated MAPbBr_(3)nanocrystalline(MAPbBr_(3)@PMMA,MA=methylammonium)electrospinning film was synthesized by in situ growth method,and NH_(3)sensor was constructed based on the fluorescence significant quenching of the MAPbBr_(3)@PMMA electrospinning film after the addition of NH_(3)gas.The morphology and structure of MAPbBr_(3)@PMMA fiber were characterized by scanning electron microscopy,transmission electron microscopy,powder X‑ray diffraction,and infrared spectroscopy,and its optical properties were characterized by UV‑Vis and fluorescence spectroscopy.The results showed that the prepared NH_(3)sensor showed a good linear relationship(r=0.9959)to NH_(3)gas concentration in a range of 8‑90 mg·L^(-1),low detection limit(3 mg·L^(-1)),and high reproducibility and selectivity.Finally,the standard recovery and the relative standard deviation(RSD)for NH_(3)of actual sample gas were 92.2%‑102.1%and 1.8%‑3.2%,respectively.

关 键 词：钙钛矿 (CH_(3)NH_(3))PbBr_(3) 静电纺丝 荧光传感 氨气 

分 类 号：TB333[一般工业技术—材料科学与工程] TB34