Highly sensitive SnO2 nanofiber chemiresistors with a low optimal operating temperature: synergistic effect of Cu2+/Au co-doping

Zhenyu Li; Xungai Wang; Tong Lin

doi:10.1039/C4TA01926A

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Highly sensitive SnO₂ nanofiber chemiresistors with a low optimal operating temperature: synergistic effect of Cu²⁺/Au co-doping†

Zhenyu Li,^ab Xungai Wang^a and Tong Lin*^a

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* Corresponding authors

^a Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
E-mail: tong.lin@deakin.edu.au
Tel: +61 3 52271245

^b Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, P. R. China

Abstract

Metal oxide chemiresistors (MOCs) with a low optimal operating temperature, high sensitivity and fast response/recovery are highly promising for various applications, but remain challenging to realize. Herein, we demonstrate that SnO₂ nanofibers after being co-doped with Cu²⁺ and Au show considerably enhanced sensing performances at an unexpectedly decreased operating temperature. A synergistic effect occurs when the two dopants are introduced together. Co-doping may form a novel strategy to the development of ultrasensitive MOCs working at a low optimal temperature.

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Article information

DOI: https://doi.org/10.1039/C4TA01926A
Article type: Paper
Submitted: 18 Apr 2014
Accepted: 23 Jun 2014
First published: 24 Jun 2014

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J. Mater. Chem. A, 2014,2, 13655-13660

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Highly sensitive SnO₂ nanofiber chemiresistors with a low optimal operating temperature: synergistic effect of Cu²⁺/Au co-doping

Z. Li, X. Wang and T. Lin, J. Mater. Chem. A, 2014, 2, 13655 DOI: 10.1039/C4TA01926A

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Journal of Materials Chemistry A