Related Experiment Video
Updated: May 19, 2026
Gold Nanoparticle Modified Carbon Fiber Microelectrodes for Enhanced Neurochemical Detection
Published on: May 13, 2019
Electrochemical sensing based on gold nanoparticle-decorated halloysite nanotube composites
Hongmei Cao1, Xiumei Sun, Yang Zhang
1Education Ministry Key Laboratory of Resource Chemistry, Department of Chemistry, College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China.
Abstract:
Novel gold nanoparticle-decorated halloysite nanotube (AuNP-HNT) composites were effectively synthesized and then used for electrochemical sensing applications. The AuNP-HNT nanocomposites were characterized by transmission electron microscopy, field emission scanning electron microscopy, zeta potential, and UV-Vis spectroscopy. The AuNP-HNT composite-based modified electrode exhibited high eletrocatalytic activity to the reduction of hydrogen peroxide (H(2)O(2)) with a linear range of 5.0×10(-6) to 2.55×10(-4)M and a detection limit of 1×10(-6)M (signal/noise=3), indicating that it could be used as a novel nonenzymatic electrochemical H(2)O(2) sensor. Furthermore, the Ru(bpy)(3)(2+)/AuNP-HNT/Nafion composite film modified electrode exhibited good electrochemiluminescence activity for determining tripropylamine.
