ZHANG Chi,GE Xin-yu,CHEN Da-wei,WU Yong-ning.Study of a Glucose Sensor Based on Carbon Dots/Glucose Oxidase Co-encapsulates Metal-Organic Framework[J].Journal of Instrumental Analysis,2024,43(07):1058-1062.
ZHANG Chi,GE Xin-yu,CHEN Da-wei,WU Yong-ning.Study of a Glucose Sensor Based on Carbon Dots/Glucose Oxidase Co-encapsulates Metal-Organic Framework[J].Journal of Instrumental Analysis,2024,43(07):1058-1062. DOI: 10.12452/j.fxcsxb.24032802.
A highly stable method for the detection of glucose in serum was developed. The nanocomposite GOx/CDs@ZIF-8 was prepared by co-encapsulating glucose oxidase(GOx) and carbon dots(CDs) in a zeolitic imidazolate framework material(ZIF-8). Under neutral conditions,this nanocomposite material can efficiently catalyze the oxidation of glucose to produce H
2
O
2
,and then free radicals(·OH) were produced via a Fenton-like reaction from the H
2
O
2
and Co
2+
. The free radical can burst the fluorescence of carbon dots,based on which,a fluorescence detection method for glucose in serum was constructed. Under the optimized conditions,the detection limit of the fluorescent probe was 0.16 μmol/L,and the recoveries were 91.0%-108%. The constructed nano fluorescent probe can be used for the detection of glucose in real samples and has high stability at room temperature.