In this comprehensive and innovative experiment for undergraduate teaching,a fluorescent sensor,AuNCs@ZIF-8,was designed and synthesized specifically for the detection of iron ions(Fe3+).Leveraging the characteristics of Metal-Organic Frameworks(MOFs)-efficient adsorption and enrichment of analytes,Au Nanoclusters(AuNCs)were encapsulated within ZIF-8,facilitating precise quantification of the target analyte.Following encapsulation,and due to the Aggregation-Induced Emission(AIE)attributes of AuNCs,a significant enhancement in the fluorescence intensity of AuNCs@ZIF-8 was observed.ZIF-8,being a porous material,allows Fe3+ to penetrate its structure upon addition,leading to quenching of the fluorescence of AuNCs and subsequently successful detection of Fe3+ in actual water samples.While the experimental steps are complex and involve the synthesis and characterization of novel nanomaterials,this study successfully integrates relevant knowledge from inorganic chemistry,analytical chemistry,and materials chemistry,offering an appropriate level of operational difficulty.This experiment thus provides a valuable opportunity for enhancing students'practical skills and understanding of cutting-edge science.
关键词
铁离子(Fe3+)/荧光传感器/综合创新实验/金纳米团簇(AuNCs)/金属有机骨架(MOFs)
Key words
Iron ion(Fe3+)/Fluorescent sensor/Comprehensive innovation experiment/Gold nanoclusters(AuNCs)/Metal-organic framework(MOFs)
维普
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