期刊
ELECTROCHIMICA ACTA
卷 224, 期 -, 页码 295-305出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.12.056
关键词
nonenzymatic sensor; doped graphene; Cu-Ni nanoparticle; glucose hydrogen peroxide
资金
- Australian Postgraduate Award scholarship
A non -enzymatic sensing platform was developed for detecting glucose and hydrogen peroxide using nitrogen doped graphene decorated with copper-nickel nanoparticles. The synthesized CuNi-NGr composite presented excellent electrocatalytic interaction with glucose and hydrogen peroxide owing to the synergistic effect of copper, nickel and N-graphene. The enhanced performance of the active materials was due to the presence of nitrogen based active sites with high contents in pyridinic and graphitic N as well as the electrocatalytic activity of distributed copper and nickel nanoparticles on graphene. Amperometric analysis showed that the sensitivity of CuNi-NGr based electrode was 7143 mu A.mM(-1).cm(-2) at low (0.01 mu M to 1 mM), and 1030 mu A.mM(-1).cm-(2) at high concentrations (2 to 20 mM) of glucose. The detection responses had corresponding linear ranges as functions of concentration with limit of detection (LOD): 10 nM at S/N =3. For hydrogen peroxide, the fabricated electrode showed detection sensitivity of 954 mu A.mM(-1).cm(-2) with LOD of 10 mu M (S/N = 3) and linear response within 0.01 to 1 mM. On testing, the electrode displayed excellent reproducibility, stability and selectivity for detecting glucose and H2O2 simultaneously in aqueous electrolytes. The sensor was shown to be effective in analyzing glucose and H2O2 present in human urine with excellent recovery. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据