Issue 124, 2015

Ultrasensitive electrochemical assay of hydrogen peroxide and glucose based on PtNi alloy decorated MWCNTs

Abstract

A novel electrochemical assay based on PtNi/MWCNT nanocomposites was designed for ultrasensitive detection of hydrogen peroxide and glucose. The PtNi/MWCNT nanocomposites have been synthesized by a chemical reduction method and were investigated by X-ray diffraction, transmission electron microscopy, and electrochemical testing. The results demonstrated that the PtNi/MWCNT nanocomposites exhibited excellent electrocatalytic activity toward hydrogen peroxide and glucose. The electrocatalytic reduction of hydrogen peroxide showed a wide linear range from 0.2 μM to 24.6 mM, with a high sensitivity of 2123.1 μA mM−1 cm−2 and a detection limit of 60 nM (S/N = 3). At the same time, amperometric sensing of glucose was realized in a linear range from 0.1 μM to 9.0 mM, with an excellent sensitivity of 85 910.0 μA mM−1 cm−2. The present hybrid system also exhibited a good performance in terms of long-time stability, reproducibility and anti-interference ability.

Graphical abstract: Ultrasensitive electrochemical assay of hydrogen peroxide and glucose based on PtNi alloy decorated MWCNTs

Article information

Article type
Paper
Submitted
28 Aug 2015
Accepted
26 Nov 2015
First published
27 Nov 2015

RSC Adv., 2015,5, 102877-102884

Author version available

Ultrasensitive electrochemical assay of hydrogen peroxide and glucose based on PtNi alloy decorated MWCNTs

H. Mei, H. Wu, W. Wu, S. Wang and Q. Xia, RSC Adv., 2015, 5, 102877 DOI: 10.1039/C5RA17410D

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