Nanorod-constructed porous Co3O4 nanowires: highly sensitive sensors for the detection of hydrazine

Jie Zhang; Wenbin Gao; Meiling Dou; Feng Wang; Jingjun Liu; Zhilin Li; Jing Ji

doi:10.1039/C4AN02111H

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Nanorod-constructed porous Co₃O₄ nanowires: highly sensitive sensors for the detection of hydrazine†

Jie Zhang,^a Wenbin Gao,^a Meiling Dou,*^a Feng Wang,*^a Jingjun Liu,^a Zhilin Li^a and Jing Ji^a

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* Corresponding authors

^a State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
E-mail: wangf@mail.buct.edu.cn, douml@mail.buct.edu.cn
Fax: +86-10-64451996
Tel: +86-10-64451996

Abstract

A highly sensitive, reliable and reproducible sensor for the detection of hydrazine was fabricated using a porous Co₃O₄ nanowire (NW) electrode. Porous Co₃O₄ NWs constructed from interconnected nanorod units with a three-dimensional porous network were synthesized via a facile hydrothermal process. The hydrazine sensor based on the Co₃O₄ NW electrode demonstrated a relatively high sensitivity (28.63 μA mM⁻¹) and a rather low detection limit (0.5 μM) due to the fast electro-oxidation of hydrazine catalyzed by Co₃O₄ NWs. The unique porous structure of Co₃O₄ NWs offers a promising probe candidate for efficient electrochemical sensors of hydrazine.

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Article information

DOI: https://doi.org/10.1039/C4AN02111H
Article type: Paper
Submitted: 17 Nov 2014
Accepted: 15 Jan 2015
First published: 15 Jan 2015

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Analyst, 2015,140, 1686-1692

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Nanorod-constructed porous Co₃O₄ nanowires: highly sensitive sensors for the detection of hydrazine

J. Zhang, W. Gao, M. Dou, F. Wang, J. Liu, Z. Li and J. Ji, Analyst, 2015, 140, 1686 DOI: 10.1039/C4AN02111H

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