CuO/Cu composite nanospheres on a TiO2 nanotube array for amperometric sensing of glucose

被引：28

作者：

Zhou, Zhiru ^{[1
]}

Zhu, Zanzan ^{[1
,2
]}

Cui, Feiyun ^{[1
]}

Shao, Jiahui ^{[3
]}

Zhou, Hong Susan ^{[1
]}

机构：

[1] Worcester Polytech Inst, Dept Chem Engn, Worcester, MA 01609 USA

[2] Natl Canc Ctr Singapore, 31A Nanyang Ave 07-02, Singapore 639804, Singapore

[3] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

来源：

MICROCHIMICA ACTA | 2020年 / 187卷 / 02期

基金：

美国国家科学基金会;

关键词：

CuO-Cu nanospheres; TiO2 nanotube arrays; Amperometric sensing; Wide analytical range; Enzymeless sensing; Glucose sensor; NANOPARTICLES; SENSORS; CU2O; ELECTRODEPOSITION; NANOSTRUCTURES; SENSITIVITY; NETWORKS; PLATINUM;

D O I：

10.1007/s00604-019-4099-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A non-enzymatic glucose sensor based on the use of CuO-Cu nanospheres placed on a TiO2 nanotube (TNT) array with excellent performance is described. The electrode was fabricated by coating the CuO-Cu nanospheres onto the TNT array through electrochemical deposition. The CuO-Cu nanospheres with a diameter of 200 nm are well dispersed on the TNT surface, which warrants smooth interaction and a 3D nanostructure with high uniformity. The modified electrode was then used for amperometric determination of glucose in 0.1 M NaOH solution. Figures of merit include (a) a typical working voltage of 0.65 V (vs. Ag/AgCl). (b) a linear range as wide as from 0.2-90 mM, (c) good sensitivity (234 mu A mM(-1) cm(-2)), and a 19 nM lower detection limit. The sensor is selective over ascorbic acid (AA), dopamine (DA), uric acid (UA), lactose, sucrose, and fructose.

引用

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