Catalytic outgrowth of SnO2 nanorods from ZnO–SnO2 nanoparticles microsphere core: combustion synthesis and gas-sensing properties

Yuming Cui; Ang Yu; Hao Pan; Xingfu Zhou; Weiping Ding

doi:10.1039/C2CE25810B

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Catalytic outgrowth of SnO₂nanorods from ZnO–SnO₂nanoparticles microsphere core: combustion synthesis and gas-sensing properties†

Yuming Cui,^ab Ang Yu,^a Hao Pan,^a Xingfu Zhou*^a and Weiping Ding^b

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* Corresponding authors

^a State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P.R. China
E-mail: zhouxf@njut.edu.cn

^b College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China

Abstract

We report for the first time the combustion synthesis of flower-like ZnO–SnO₂ composite microspheres by decomposition at temperatures of 873 K in the presence of polyethylene glycol as the surfactant. A plausible mechanism for the formation of the core-shell structured microspheres is also proposed. The as-obtained sample exhibits good sensing properties against ethanol vapour at an operating temperature of 673 K, including a rapid response and recovery and high sensitivity, which makes the product a good candidate for fabricating ethanol sensors.

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Article information

DOI: https://doi.org/10.1039/C2CE25810B
Article type: Paper
Submitted: 23 May 2012
Accepted: 14 Aug 2012
First published: 15 Aug 2012

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CrystEngComm, 2012,14, 7355-7359

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Catalytic outgrowth of SnO₂ nanorods from ZnO–SnO₂ nanoparticles microsphere core: combustion synthesis and gas-sensing properties

Y. Cui, A. Yu, H. Pan, X. Zhou and W. Ding, CrystEngComm, 2012, 14, 7355 DOI: 10.1039/C2CE25810B

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