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Hydrovoltaic-photoelectric effect driven self-powered electrochemical aptasensor with engineered built-in electric field for on-site microcystin-RR detection in aquatic products.

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Bibliographic Details
Title: Hydrovoltaic-photoelectric effect driven self-powered electrochemical aptasensor with engineered built-in electric field for on-site microcystin-RR detection in aquatic products.
Authors: Chen, Yan1 (AUTHOR), Jiang, Ding1 (AUTHOR) jiangding@cczu.edu.cn, Du, Xiaojiao2 (AUTHOR), Wang, Xue3 (AUTHOR), Shan, Xueling1 (AUTHOR), Wang, Wenchang1 (AUTHOR), Chen, Zhidong1 (AUTHOR) zdchen@cczu.edu.cn
Source: Microchimica Acta. May2026, Vol. 193 Issue 5, p1-14. 14p.
Subjects: Photoelectric effect, Biosensors, Cyanobacterial toxins, Energy harvesting, Fishery products, Toxin analysis, Photovoltaic effect
Abstract: The bioaccumulation of hepatotoxic Microcystin-RR (MC-RR) in aquatic products poses a severe threat to human health via the food chain, underscoring the urgent need for sensitive detection methods. Herein, a self-powered electrochemical aptasensor was developed for on-site MC-RR monitoring based on ZIF-67/g-C3N4 heterojunctions. By coupling hydrovoltaic and photoelectric effects, the engineered built-in electric field significantly enhanced charge separation and water evaporation, amplifying the electrical signal by 11-fold under illumination. The aptamer-functionalized platform enabled specific MC-RR detection via modulating the interfacial charge transfer, achieving a wide linear range from 1 × 10− 14 M to 1 × 10− 10 M and an ultra-low detection limit of 2.36 × 10− 15 M. Furthermore, the sensor demonstrated excellent selectivity against interfering substances and was successfully applied to the analysis of aquaculture water and crucian carp samples. This work presents a sustainable, high-performance self-powered sensing platform for early cyanotoxin screening to safeguard aquatic food safety. Its advantages of simple operation and high sensitivity make it a promising tool for on-site food safety monitoring. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The bioaccumulation of hepatotoxic Microcystin-RR (MC-RR) in aquatic products poses a severe threat to human health via the food chain, underscoring the urgent need for sensitive detection methods. Herein, a self-powered electrochemical aptasensor was developed for on-site MC-RR monitoring based on ZIF-67/g-C3N4 heterojunctions. By coupling hydrovoltaic and photoelectric effects, the engineered built-in electric field significantly enhanced charge separation and water evaporation, amplifying the electrical signal by 11-fold under illumination. The aptamer-functionalized platform enabled specific MC-RR detection via modulating the interfacial charge transfer, achieving a wide linear range from 1 × 10− 14 M to 1 × 10− 10 M and an ultra-low detection limit of 2.36 × 10− 15 M. Furthermore, the sensor demonstrated excellent selectivity against interfering substances and was successfully applied to the analysis of aquaculture water and crucian carp samples. This work presents a sustainable, high-performance self-powered sensing platform for early cyanotoxin screening to safeguard aquatic food safety. Its advantages of simple operation and high sensitivity make it a promising tool for on-site food safety monitoring. [ABSTRACT FROM AUTHOR]
ISSN:00263672
DOI:10.1007/s00604-026-08091-7