Jiaodi Li, Chenxi Wang, Xiaoling Chen, Minghui Huang, Qian Fu, Rongjie Li, Yilin Wang, Chunyan Li, Pengcheng Zhao, Yixi Xie, Junjie Fei
Food chemistry 2022 Sep 30Gallic acid (GA) is found in a wide range of natural plants and is relevant to the health of human beings. Here, a photoelectrochemical sensing platform based on g-C3N4@CNT heterojunction has been prepared for the highly sensitive and selective detection of GA. Under the light of xenon lamp, the photocurrent of g-C3N4@CNT is 7 times higher than that of g-C3N4. And the sensor generates 4 times more photocurrent in the presence of GA than without GA. This sensor has a wide linear range from 10 nM to 10 μM with a limit of detection as low as 2 nM. Also, the abundant amino groups of g-C3N4 provide excellent selectivity for the sensor. Furthermore, the sensor can be used for the analysis of GA in black tea samples, which provides a novel and rapid method for the detection of GA in food samples. Copyright © 2022 Elsevier Ltd. All rights reserved.
Jiaodi Li, Chenxi Wang, Xiaoling Chen, Minghui Huang, Qian Fu, Rongjie Li, Yilin Wang, Chunyan Li, Pengcheng Zhao, Yixi Xie, Junjie Fei. A non-enzymatic photoelectrochemical sensor based on g-C3N4@CNT heterojunction for sensitive detection of antioxidant gallic acid in food. Food chemistry. 2022 Sep 30;389:133086
PMID: 35526285
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