Label-Free Electrochemical Aptasensor for Sensitive Detection of Malachite Green Based on AuNPs/MWCNTs@TiO2 Nanocomposites
Zanlin Chen,
Haiming Li,
Miaojia Xie
et al.
Abstract:This study proposes a label-free aptamer biosensor for the sensitive detection of malachite green(MG) using gold nanoparticles/multi-walled carbon nanotubes @ titanium dioxide(AuNPs/MWCNTs@TiO2). The nanocomposite provides a large surface area and good electrical conductivity, improving current transfer and acting as a platform for aptamer immobilization. The aptamer and the complementary chain(cDNA) are paired by base complementary to form the recognition element and fixed on the AuNPs by sulfhydryl group, wh… Show more
The emergence of carbon nanotubes (CNTs) in the last decade has greatly promoted the development of biosensors, which provides a possible alternative to conventional detection systems. CNTs possess outstanding properties...
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