Label-free photoelectrochemical immunoassay for CEA detection based on CdS sensitized WO3@BiOI heterostructure nanocomposite

Molecularly Imprinted Polymers in Biological Applications

“…Zhou et al used CEA as a target to imprint MIPs [126]. CEA is a glycoprotein serving as a biomarker for colorectal, breast, ovarian, lung, gastric, bladder and pancreatic cancer [127,128]. CEA is produced during fetal development and therefore present in low levels in healthy persons [129].…”

Preparation and characterization of 0D Au NPs@3D BiOI nanoflower/2D NiO nanosheet array heterostructures and their application as a self-powered photoelectrochemical biosensing platform

“…To obtain the desired PEC performance, the type, band gap size as well as the band matching of semiconductors require a judicious design and optimization. [12][13][14][15] Various heterostructures have been designed to expand the light utilization range or improve the electron (e À )/hole (h + ) separation efficiency, 16 such as: Au NPs@ZnO, 17 CdS/RGO/ZnO, 3 CdSe/ZnS/ TiO 2 , 18 NiO/PbS 12 and C 3 N 4 /PbS. 19 Self-powered PEC biosensors can be divided into three major categories: p type/p-p heterostructure, 12 n type/n-n heterostructure 3,4,17 and photofuel cell type.…”

Construction of CdSe@TiO 2 core‐shell nanorod arrays by electrochemical deposition for efficient visible light photoelectrochemical performance

“…14,15 Nevertheless, their PEC water oxidation efficiency still is severely limited by the large bandgap of 3.0 eV for rutile and 3.2 eV for anatase and the high recombination rate of photogenerated charge carriers. 16 To address those obstacles, several strategies have been carried out to improve the PEC performance such as element doping, 17,18 dye or inorganic sensitization, [19][20][21] surface modification, 22,23 and constructing heterostructure. [24][25][26] Thereinto, introduction of visible light photosensitizer on TiO 2 -based to construct heterostructure is considered as a highly effective approach, which can not only extend the optical absorption edge of TiO 2 but also decrease the recombination rate of photogenerated electron-hole pairs.…”