Immobilization of gold nanoparticles on electrospun polyacrylonitrile/carbon nanotube nanofiber for self-powered electrochemical biosensing of myoglobin

IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Chemistry and Physics Pub Date : 2025-03-14 DOI:10.1016/j.matchemphys.2025.130722
Mingye Zhao , Ling Wang , Hui Xu
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Abstract

Polyacrylonitrile-carbon nanotube (PAN-CNT) nanofibers were prepared on indium tin oxide (ITO) electrode using electrospinning technique, and gold nanoparticles (AuNPs) were subsequently modified on ITO-PAN-CNT electrode by electrostatic adsorption to construct ITO-PAN-CNT–COOH–AuNPs substrate electrode. The self-powered biosensor consists of a PAN-CNT–COOH–AuNPs-aptamer functionalized biocathode and a PAN-CNT–COOH–AuNPs-glucose oxidase (GOx) bioanode. By capturing the change in electrode spatial potential resistance before and after myoglobin (Mb), This interaction affects the transmission of electrons between the redox probe [Fe(CN)6]3- an d the biocathode, establishing a linear relationship between EOCV and Mb concentration. The self-powered biosensor displayed a highly sensitive response to the target Mb over a concentration range from 5 to 5 × 103 ng mL−1, with a limit of detection reaching less than 0.23 ng mL−1 (S/N = 3), and exhibited outstanding stability and selectivity.
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来源期刊
Materials Chemistry and Physics
Materials Chemistry and Physics 工程技术-材料科学:综合
CiteScore
8.70
自引率
4.30%
发文量
1515
审稿时长
69 days
期刊介绍: Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.
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