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- W2894218946 abstract "Herein, a light-driven self-powered biosensor based on a photoelectrochemical enzymatic fuel cell (PEFC) was proposed for ultrasensitive organophosphate pesticide (OP) detection. To construct this fuel cell, poly(3,4-ethylenedioxythiophene)-sensitized CdS quantum dot (PEDOT/CdS) photoanode and multiwalled carbon nanotubes/gold nanoparticals/bilirubin oxidase (CNTs/AuNPs/BOD) biocathode were elaborately designed. Initially, the enzyme acetylcholinesterase (AChE) immobilized on the CdS/PEDOT photoanode could hydrolyze acetylthiocholine iodide (ATCh) into thiocholine as the electron donor to enhance the charge separation efficiency; thus, PEFC produced relatively high open circuit voltage (EOCV) upon illumination. OPs could inhibit the AChE enzymatic catalytic activity on hydrolysis, and in this case, a smaller EOCV obtained. Thus, based on the constructed PEFC, self-powered biosensing of OPs was realized, and the detection limit was as low as 0.012 ng mL-1 (S/N = 3), which was comparable or superior to those of the reported methods. In this study, we not only constructed a facile, ultrasensitive and low-cost sensing platform for OP detection, but also provided an ingenious idea for designing light-driven self-powered biosensing based on PEFC." @default.
- W2894218946 created "2018-10-05" @default.
- W2894218946 creator A5023277532 @default.
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- W2894218946 date "2018-01-01" @default.
- W2894218946 modified "2023-10-17" @default.
- W2894218946 title "Light-driven self-powered biosensor for ultrasensitive organophosphate pesticide detection <i>via</i> integration of the conjugated polymer-sensitized CdS and enzyme inhibition strategy" @default.
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- W2894218946 doi "https://doi.org/10.1039/c8tb02286k" @default.
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