Unusual electrochemical response of ZnO nanowires-decorated multiwalled carbon nanotubes

被引：27

作者：

Mo, Guang-Quan ^{[1
]}

Ye, Jian-Shan ^{[1
]}

Zhang, Wei-De ^{[1
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Nano Sci Res Ctr, Guangzhou 510640, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2009年 / 55卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Zinc oxide; Nanowires; Carbon nanotubes; Electrochemical properties; Biosensor; OXIDE NANOSTRUCTURES; ELECTRON-TRANSFER; REDOX ENZYMES; SOLAR-CELLS; ZINC-OXIDE; URIC-ACID; BIOSENSOR; TRANSPORT; NANOCOMPOSITES; NANOPARTICLES;

D O I：

10.1016/j.electacta.2009.09.005

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel type of ZnO nanowires-modified multiwalled carbon nanotubes (MWCNTs) nanocomposite (ZnO-NWs/MWCNTs) has been prepared by a hydrothermal process. The ZnO-NWs/MWCNTs nanocomposite has a uniform surface distribution and large coverage of ZnO nanowires onto MWCNTs with 3 D configuration, which was characterized by scanning electron microscopy. Cyclic voltammetry and electrochemical impedance spectroscopy methods were applied to investigate the electrochemical properties of ZnO-NWs/MWCNTs nanocomposite. Surprisingly, unlike the conventional n-type semiconducting ZnO nanowires grown on Ta substrate, the ZnO-NWs/MWCNTs nanocomposite exhibits excellent electron transfer capability and gives a pair of well-defined symmetric redox peaks towards ferricyanide probe. What's more, the ZnO-NWs/MWCNTs nanocomposite shows remarkable electrocatalytic activity (current response increased 4 folds at 0.3V) towards H2O2 by comparing with bare MWCNTs. The ZnO-NWs/MWCNTs nanocomposite could find applications in novel biosensors and other electronic devices. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：511 / 515

页数：5

共 36 条

[1] Nanotubes from carbon [J].

Ajayan, PM .

CHEMICAL REVIEWS, 1999, 99 (07) :1787-1799

[2] Nonenzymatic electrochemical glucose sensor based on MnO2/MWNTs nanocomposite [J].

Chen, Jin ;

Zhang, Wei-De ;

Ye, Jian-Shan .

ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (09) :1268-1271

[3] Novel ZnO nanostructures grown on carbon nanotubes by thermal evaporation [J].

Chrissanthopoulos, A. ;

Baskoutas, S. ;

Bouropoulos, N. ;

Dracopoulos, V. ;

Tasis, D. ;

Yannopoulos, S. N. .

THIN SOLID FILMS, 2007, 515 (24) :8524-8528

[4] Modification of carbon nanotubes with redox hydrogel: Improvement of amperometric sensing sensitivity for redox enzymes [J].

Cui, Hui-Fang ;

Ye, Jian-Shan ;

Zhang, Wei-De ;

Sheu, Fwu-Shan .

BIOSENSORS & BIOELECTRONICS, 2009, 24 (06) :1723-1729

[5] A novel tetragonal pyramid-shaped porous ZnO nanostructure and its application in the biosensing of horseradish peroxidase [J].

Dai, Zhihui ;

Liu, Ke ;

Tang, Yawen ;

Yang, Xiaodi ;

Bao, Jianchun ;

Shen, Jian .

JOURNAL OF MATERIALS CHEMISTRY, 2008, 18 (16) :1919-1926

[6] In vivo detection of superoxide anion in bean sprout based on ZnO nanodisks with facilitated activity for direct electron transfer of superoxide dismutase [J].

Deng, Zifeng ;

Rui, Qi ;

Yin, Xia ;

Liu, Haiqing ;

Tian, Yang .

ANALYTICAL CHEMISTRY, 2008, 80 (15) :5839-5846

[7] Optical properties of ZnO nanostructures [J].

Djurisic, Aleksandra B. ;

Leung, Yu Hang .

SMALL, 2006, 2 (8-9) :944-961

[8] Zinc oxide nanostructures: Synthesis and properties [J].

Fan, ZY ;

Lu, JG .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2005, 5 (10) :1561-1573

[9] Conversion of sunlight to electric power by nanocrystalline dye-sensitized solar cells [J].

Grätzel, M .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2004, 164 (1-3) :3-14

[10] CNT-CdTe versatile donor-acceptor nanohybrids [J].

Guldi, DM ;

Rahman, GMA ;

Sgobba, V ;

Kotov, NA ;

Bonifazi, D ;

Prato, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (07) :2315-2323

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