Issue 31, 2023

Biotemplate synthesis of a Co3O4 microtube sensor for fast triethylamine detection

Abstract

A low operating temperature and short response/recovery time are essential factors for sensors. Hence, it is necessary to create a sensor that can quickly detect target gas at a relatively low temperature. In this work, Co3O4 microtube based sensors were fabricated by a bio-template method using absorbent cotton. Co3O4 microtube sensors prepared in different concentrations of a salt solution displayed different sensitivities to triethylamine (TEA). The Co3O4-0.10 microtube sensor exhibited excellent sensitivity to TEA at 160 °C. The response of the Co3O4-0.10 sensor to 100 ppm TEA gas was 31.27 and the detection limit of TEA was 50 ppb. Meanwhile, the Co3O4-0.10 sensor also showed a short response/recovery time, such as 95 s/38 s to 100 ppm TEA, high selectivity, a good linear relationship (R2 = 0.994 for 1–100 ppm TEA and R2 = 0.991 for 50–1000 ppb TEA gas), fine repeatability and long-term stability, and strong humidity resistance. Thus, Co3O4 microtube based sensors prepared using a bio-template method have potential application prospects for the detection of TEA gas.

Graphical abstract: Biotemplate synthesis of a Co3O4 microtube sensor for fast triethylamine detection

Supplementary files

Article information

Article type
Paper
Submitted
15 May 2023
Accepted
07 Jul 2023
First published
24 Jul 2023

Dalton Trans., 2023,52, 10835-10843

Biotemplate synthesis of a Co3O4 microtube sensor for fast triethylamine detection

T. Xu, H. Wang, J. Zhao, F. Zhao, W. Cong, G. Wang and J. Li, Dalton Trans., 2023, 52, 10835 DOI: 10.1039/D3DT01450A

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