High-Performance Amperometric Sensors Using Catalytic Platinum Nanoparticles-Thionine-Multiwalled Carbon Nanotubes Nanocomposite

被引：13
作者：
Yu, Rongmin [1 ]
Wang, Lihua [1 ]
Xie, Qingji [1 ]
Yao, Shouzhuo [1 ]
机构：
[1] Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Minist Educ China, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China
来源：
ELECTROANALYSIS | 2010年 / 22卷 / 23期
基金：
中国国家自然科学基金;
关键词：
Platinum nanoparticles-thionine-multiwalled carbon nanotubes nanocomposite; Hydrogen peroxide; Glucose; Nitrite; Nanoparticles; GLUCOSE-OXIDASE; THIN-FILM; SOL-GEL; BIOSENSOR; COMPOSITE; OXIDATION; NITRITE; ELECTRODE; ENZYME; ELECTROPOLYMERIZATION;
D O I：
10.1002/elan.201000296
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Thionine (TH) adsorbed on multiwalled carbon nanotubes (MWCNTs) increases the load and dispersion of platinum nanoparticles (PtNPs) generated by chemical reduction of H2PtCl6 with NaBH4. Under the optimum conditions, the PtNPs-TH-MWCNTs/Au electrode electrocatalyzed the reduction and oxidation of H2O2 with high sensitivity, and after glucose oxidase (GOx) adsorption it responded to glucose concentration with a sensitivity of 0.14 AM(-1) cm(-2). The cyclic voltammetric cathodic peak current for NO2- reduction on PtNPs-TH-MWCNTs/Au responded linearly to NO2- concentration from 0.5 to 150 mu M, with a sensitivity of 5.52 AM(-1) cm(-2) and a detection limit of 0.2 mu M.
引用
收藏
页码：2856 / 2861
页数：6
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