Self-powered photoelectrochemical aptasensor based on in situ topological conversion of Bi2O2S/Bi2S3 for sensitive detection of fumonisin B1

IF 8 1区化学 Q1 CHEMISTRY, ANALYTICAL

Sensors and Actuators B: Chemical Pub Date : 2025-02-05 DOI:10.1016/j.snb.2025.137395

Na Song, Jingui Chen, Xiaoran Yang, Xiang Ren, Jinhui Feng, Huan Wang, Hongmin Ma, Qin Wei

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Abstract

Excessive fumonisin B1 (FB1) can cause serious harm to humans, so it is important to achieve sensitive detection of FB1. In this study, a self-powered photoelectrochemical (PEC) aptasensor for the sensitive detection of FB1 was designed based on a Bi₂O₂S/Bi₂S₃ photoanode and Au@BiOI photocathode. The Bi₂O₂S/Bi₂S₃ prepared by in situ topological transformation has a large number of carrier channels, which improves the charge transfer efficiency. Consequently, the cathodic photocurrent was enhanced, which laid the foundation for the sensitive detection of FB1. Additionally, Au@BiOI as a photocathode sensing platform avoids the false-positive problem (comparison of anode sensing platforms). The aptasensor has a linear detection range of 1 pg/mL ~ 100 μg/mL with a detection limit as low as 0.10 pg/mL (S/N=3). The method provides a new idea for the detection of other mycotoxins.

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来源期刊

Sensors and Actuators B: Chemical 工程技术-电化学

CiteScore

14.60

自引率

11.90%

发文量

1776

审稿时长

3.2 months

期刊介绍： Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.