CdS/TiC Heterostructure-based Photoelectrochemical Platform for Sensitive and Selective Detection of Trace Amount of Cu

Overview

Journal Anal Bioanal Chem

Specialty Chemistry

Date 2022 Jan 4

PMID 34982179

Citations 5

Authors

Cui Ye

Fan Xu

Fateh Ullah

Minqiang Wang

Affiliations

Soon will be listed here.

Abstract

Photoelectrochemical (PEC) detection as a potential development strategy for Cu ion sensor has arisen extensive attention. Herein, CdS/TiC heterostructure was synthesized by electrostatically driven assembly and hydrothermal method. On the basis of a CdS/TiC heterostructure, a novel anodic PEC sensing platform was constructed for highly sensitive detection of trace amount of Cu. Carrier transport at the interface of CdS/TiC heterostructure was tremendously improved, due to the generation of effective Schottky junctions. Under visible light irradiation, the CdS/TiC heterostructure-modified PEC platform exhibits great anode photocurrent signal, and the formation of CuS reduces the PEC response with the presence of Cu as a representative analyte. Thus, the linear response of Cu ranges from 0.1 nM to 10 µM and the limits of detection (LOD, 0.05 nM) are obtained, which is lower than that of WHO's Guidelines for Drinking-water Quality (30 μM). This idea of component reconstitution provides a new paradigm for the design of advanced PEC sensors.

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