Ti3C2 MXene-based Schottky photocathode for enhanced photoelectrochemical sensing
نویسندگان
چکیده
Nanomaterials are vital to the realization of photoelectrochemical (PEC) sensing platform that provides sensitive detection and quantification low-abundance biological samples. Here, this work reports a Schottky junction-based BiOI/Ti3C2 heterostructure, used as photocathode for PEC bioanalysis. Specially, we realize in situ growth flower-like BiOI on 2D intrinsically negatively charged Ti3C2 MXene nanosheet endows heterostructure with admirably combined merits, noting particular generation built-in electric field decrease contact resistance between Ti3C2. Under visible light irradiation, heterostructure-modified displays superior cathodic photocurrent signal, while response cuts down presence l-Cysteine (L-Cys) representative analyte owing metal-S bond formation. The “signal-off” strategy shows good performance terms sensitivity, limit (LOD, 0.005 nM) stability. This research reveals great potentials MXene-based application sensor establishment.
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ژورنال
عنوان ژورنال: Journal of Alloys and Compounds
سال: 2021
ISSN: ['0925-8388', '1873-4669']
DOI: https://doi.org/10.1016/j.jallcom.2020.157787