Fabrication of sensitive photoelectrochemical aptasensor using Ag nanoparticles sensitized bismuth oxyiodide for determination of chloramphenicol

被引：72
作者：
Dong, Jintao [1 ]
Chen, Feng [2 ]
Xu, Li [1 ]
Yan, Pengcheng [1 ]
Qian, Junchao [2 ]
Chen, Yun [1 ]
Yang, Mengying [1 ]
Li, Henan [1 ]
机构：
[1] Jiangsu Univ, Sch Chem & Chem Engn, Inst Energy Res, Key Lab Zhenjiang, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Suzhou Univ Sci & Technol, Jiangsu Key Lab Environm Funct Mat, Suzhou 215009, Peoples R China
来源：
MICROCHEMICAL JOURNAL | 2022年 / 178卷
基金：
中国国家自然科学基金;
关键词：
Photoelectrochemistry; Aptasensor; Chloramphenicol; AgNPs/BiOI composites; EFFICIENT CHARGE SEPARATION; PHOTOCATALYST; COMPOSITE;
D O I：
10.1016/j.microc.2022.107317
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A highly sensitive and selective photoelectrochemical (PEC) aptasensor was constructed by Ag nanoparticles sensitized bismuth oxyiodide (AgNPs/BiOI) composites for detecting trace chloramphenicol (CAP). Because the sufficient light utilization of AgNPs and high photoelectrons transfer efficiency of BiOI, AgNPs/BiOI composites exhibited dramatically enhanced PEC performance, which is in favor of realizing efficient CAP detection. Attributed to the specific recognition of modified CAP aptamer, the PEC CAP aptasensor based on the aptamer/ AgNPs/BiOI/ITO electrodes performed a wide linear range (1 pM -20000 pM), a satisfactory detection limit (0.4 pM, S/N = 3), and superior selectivity. In addition, the CAP aptasensor possessed favorable stability and reproducibility, promoting further application of CAP trace detection and providing a foothold for ultrasensitive antibiotic detection and environmental monitoring.
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页数：7
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