A novel sensitive nonenzymatic glucose sensor based on perovskite LaNi0.5Ti0.5O3-modified carbon paste electrode

被引：49
作者：
Wang, Yulong
Xu, Yanhong [2 ]
Luo, Liqiang
Ding, Yaping [1 ,2 ]
Liu, Xiaojuan
Huang, Anquan
机构：
[1] Shanghai Univ, Dept Chem, Coll Sci, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Sch Mat Sci & Engn, Shanghai Key Lab Modern Met & Mat Proc, Shanghai 200444, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2010年 / 151卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Nonenzymatic sensor; Glucose; Perovskite; Amperometry; LAYERED DOUBLE HYDROXIDE; ASCORBIC-ACID; MEDIATOR; OXIDASE;
D O I：
10.1016/j.snb.2010.09.052
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel sensitive nonenzymatic glucose sensor was reported based on perovskite LaNi0.5Ti0.5O3 (LNT) modified carbon paste electrode (CPE). The surface characterization of the modified electrode and the bare CPE was examined by scanning electron microscopy (SEM). The high electrochemical activity of LNT to electrocatalytic oxidation of glucose in alkaline medium was characterized by cyclic voltammetry and amperometry, and the experimental conditions such as the amount of LNT, the concentration of NaOH and the applied potential were investigated in detail. The glucose sensor was applied to the quantification of glucose with a high sensitivity of 1630.57 mu A mM(-1) cm(-2) and a low limit of detection of 0.07 mu M. The novel glucose sensor also exhibited good reproducibility, long-term stability, as well as high selectivity with no interference from common interfering substances such as ascorbic acid, dopamine and uric acid. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：65 / 70
页数：6
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