Sensitive Fluorescent Sensing for Hydrogen Sulfide by Perovskite Quantum Dots
作者单位：Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety Department of Chemistry Fuzhou University
会议名称：《中国化学会第十三届全国分析化学年会》
会议日期：2018年
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学]
关 键 词：CsPbBr3 QDs fluorescent sensing Hydrogen Sulfide
摘 要：As a highly toxic environmental pollutant and also an important gaseous signaling compound in diverse physiological processes,the selective and sensitive detection of hydrogen sulfide (HS) is very *** this work,a novel fluorescence nanosensor was designed for rapid visual detection of HS by using CsPbBr perovskite quantum dots (QDs).The quenching mechanism of perovskite QDs for HS is Sulfide ions have a strong affinity for Pb(Ⅱ),When HS is added,sulfur ions bind Pb(Ⅱ) to form insoluble PbS precipitates and the morphological features and crystal structure of the original CsPbBr nanocrystals are destroyed.