期刊
ELECTROCHIMICA ACTA
卷 231, 期 -, 页码 20-26出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.02.018
关键词
glucose sensor; nanoporous platinum; electrocatalysis; calibration; Langmuir equation
资金
- ARC [LP100200770, DP150101861]
- Australian Research Council [LP100200770] Funding Source: Australian Research Council
A sensitive and reliable non-enzymatic electrochemical blood-glucose sensor has been fabricated using a nanoporous platinum sensing interface prepared by successive electrochemical formation and reduction of thick hydrous platinum oxide layers. The fabricated nanoporous platinum electrode exhibits sensitive amperometric responses to glucose in phosphate buffered saline (PBS) as well as ascorbic acid and uric acid. At an applied electrode potential of +0.4 V (vs Ag vertical bar AgCl vertical bar satd. KCl) the oxidation current is non-linear with glucose concentration following a Langmuir-like relation, with r(2) = 0.994. The sensitivity over a linear range of 1-10 mM is (5.67 +/- 0.18) mu A cm(-2) mM(-1) with a detection limit of 0.8 mM. The lower limit of quantitation, at which the relative standard uncertainty is 10%, is 2.3 mM. The sensor measured glucose concentration in human blood samples, showing good agreement with a commercial sensor. The results obtained make the proposed sensor a promising device for practical glucose monitoring in human blood. (C) 2017 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