Issue 63, 2016

Non-enzymatic sensor based on a glassy carbon electrode modified with Ag nanoparticles/polyaniline/halloysite nanotube nanocomposites for hydrogen peroxide sensing

Abstract

Ag nanoparticles/polyaniline/halloysite nanotube (AgNPs/PANI/HNTs) nanocomposites were synthesized and used for fabricating nonenzymatic H2O2 sensor. AgNPs/PANI/HNTs nanocomposites were synthesized through the direct loading of preformed AgNPs over the surface of PANI/HNTs. The morphology and composition of the nanocomposites were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), energy-dispersive X-ray spectrum (EDX) and X-ray diffraction spectrum (XRD). SEM and TEM observations reveal that large numbers of AgNPs were distributed on the surface of PANI/HNTs. The electrochemical investigations indicate that the sensor based on AgNPs/PANI/HNT exhibited an excellent performance toward H2O2 with a wide linear range of 0.5 μM to 4.7 mM, a high sensitivity of 74.8 μA mM−1 cm−2 and a low detection limit of 0.3 μM (S/N = 3).

Graphical abstract: Non-enzymatic sensor based on a glassy carbon electrode modified with Ag nanoparticles/polyaniline/halloysite nanotube nanocomposites for hydrogen peroxide sensing

Article information

Article type
Paper
Submitted
10 Mar 2016
Accepted
12 Jun 2016
First published
13 Jun 2016

RSC Adv., 2016,6, 58329-58335

Non-enzymatic sensor based on a glassy carbon electrode modified with Ag nanoparticles/polyaniline/halloysite nanotube nanocomposites for hydrogen peroxide sensing

Z. Yang, X. Zheng and J. Zheng, RSC Adv., 2016, 6, 58329 DOI: 10.1039/C6RA06366G

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