Dual-function of ZnS/Ag2S nanocages in ratiometric immunosensors for the discriminant analysis of ochratoxins: Photoelectrochemistry and electrochemistry

文献类型： 外文期刊

第一作者： Qileng, Aori

作者： Qileng, Aori;Liang, Hongzhi;Huang, Shule;Liu, Weipeng;Liu, Yingju;Qileng, Aori;Xu, Zhenlin;Liu, Yingju

作者机构：

关键词： Ochratoxins; Photoelectrochemistry; Electrochemistry; Immunosensor

期刊名称：SENSORS AND ACTUATORS B-CHEMICAL （ 影响因子：7.46； 五年影响因子：6.743 ）

ISSN：

年卷期： 2020 年 314 卷

页码：

收录情况： SCI

摘要： A ratiometric immunosensor was built to detect different ochratoxins in a mixture by combining broad-specific antibody and antigen, multidimensional signals, and computer programs. This immunosensor used MoS2 NFs/CdS as the photoelectrode to immobilize antigens and ZnS/Ag2S nanocages to capture the secondary antibody. During the immunoreaction recognition, the photoelectrochemical (PEC) current of MoS2 NFs/CdS and the square wave voltammetric (SWV) current of the dissolved Zn2+ from ZnS can be influenced by the deposition of the ZnS/Ag2S label. The results show that the ratio of PEC to SWV current decreased linearly with the logarithm of ochratoxin concentrations in a range from 1 ng/L to 1 mu g/L. The present work provides a possible route to design broad-specific immunosensors and expands the scope of ratiometric biosensors in the detection of a mixture.

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