Abstract
The development of a reliable method for detecting tetracycline (TC) in fish is essential to ensure the safety of aquatic products and human health. Herein, a photoelectrochemical (PEC) aptasensor was fabricated for the efficient detection of TC based on a designed efficient photoanode with a novel high light-harvesting heterojunction of bismuth sulfide/graphitic carbon nitride (Bi2S3/g-C3N4) as a photoactive material. The Bi2S3/g-C3N4 exhibited enhanced photocurrent due to its increased light capture capability, high carrier density and especially low electron-hole recombination efficiency enabled by the Z-scheme electron transfer, which was verified by the UV–vis diffuse reflectance spectrum, Mott–Schottky plot, and electron spin resonance spectroscopy. Under optimal experimental conditions, the fabricated aptasensor had the advantages of a wide linear range of 0.01–10 nM, a low detection limit of 3 pM and good selectivity and reproducibility. When the aptasensor was applied to determine TC in fish, the results were in good agreement with the UPLC-MS/MS method, indicating the reliability of the PEC aptasensing method for detecting TC in real samples.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
