Issue 16, 2020
From the journal:

CrystEngComm

Susceptible CoSnO3 nanoboxes with p-type response for triethylamine detection at low temperature

Lingli Zheng,a   Yingqiang Zhao,b   Yongshan Xu,a   Chen Yang,a   Jun Zhangac  and  Xianghong Liu ORCID logo *ac  

* Corresponding authors

a College of Physics, Center for Marine Observation and Communications, Qingdao University, Qingdao 266071, China
E-mail: xianghong.liu@qdu.edu.cn

b College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China

c Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China

Abstract

Ternary metal oxides containing two different metal cations are highly promising candidates for sensor materials due to their intriguing properties. Herein, we report on the application of CoSnO3 nanoboxes with a porous structure as a sensing layer for highly sensitive detection of triethylamine at a relatively low temperature. The CoSnO3 nanoboxes are obtained by calcination of CoSn(OH)6 precursors derived from a solution precipitation method. The dosage of cobalt is found to strongly influence the structure of the products and the sensing properties. The morphological structure and chemical composition of the materials are investigated in detail by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, N2 adsorption–desorption and X-ray photoelectron spectroscopy. Gas sensing measurements demonstrate that the CoSnO3 nanoboxes exhibit a p-type response and can efficiently detect triethylamine at a low temperature of 100 °C with a limit of detection of 134 ppb. The gas sensing mechanism is discussed by the modulation of a hole accumulation layer (HAL) on the adsorption of gas molecules.

Graphical abstract: Susceptible CoSnO3 nanoboxes with p-type response for triethylamine detection at low temperature

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Article information

DOI
https://doi.org/10.1039/D0CE00170H
Article type
Paper
Submitted
04 Feb 2020
Accepted
08 Mar 2020
First published
09 Mar 2020

CrystEngComm, 2020,22, 2795-2805

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Susceptible CoSnO3 nanoboxes with p-type response for triethylamine detection at low temperature

L. Zheng, Y. Zhao, Y. Xu, C. Yang, J. Zhang and X. Liu, CrystEngComm, 2020, 22, 2795 DOI: 10.1039/D0CE00170H

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