Mixed potential type sensor based on Gd2Zr2O7 solid electrolyte and BiVO4 sensing electrode for effective detection of triethylamine

Li Jiang; Yong Liu; Wei Sun; Minghao Tang; Yueying Zhang; Siyuan Lv; Jing Wang; Yi Liu; Chenguang Wang; Peng Sun; Jie Zheng; Fangmeng Liu; Geyu Lu

doi:10.1016/j.jhazmat.2022.129695

Mixed potential type sensor based on Gd₂Zr₂O₇ solid electrolyte and BiVO₄ sensing electrode for effective detection of triethylamine

J Hazard Mater. 2022 Oct 15:440:129695. doi: 10.1016/j.jhazmat.2022.129695. Epub 2022 Jul 28.

Authors

Li Jiang¹, Yong Liu¹, Wei Sun², Minghao Tang¹, Yueying Zhang¹, Siyuan Lv¹, Jing Wang³, Yi Liu⁴, Chenguang Wang⁵, Peng Sun⁵, Jie Zheng¹, Fangmeng Liu⁶, Geyu Lu⁵

Affiliations

¹ State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
² State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
³ School of Electronic and Information Engineering, Changchun University of Science and Technology, Changchun 130022, China.
⁴ State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China. Electronic address: yiliuchem@jlu.edu.cn.
⁵ State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China; International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
⁶ State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China; International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun 130012, China. Electronic address: liufangmeng@jlu.edu.cn.

PMID: 35963092
DOI: 10.1016/j.jhazmat.2022.129695

Abstract

Triethylamine (TEA), as a common and widely used industrial raw material, is extremely hazardous to the environment and human health. Therefore, the development of a portable gas-sensing technology for high-efficiency detection of TEA is of great worth for human health and environmental monitoring. In this work, a mixed potential type TEA sensor was initially developed based on pyrochlore Gd₂Zr₂O₇ solid state electrolyte and BiVO₄ sensing electrode. The sensor generates high response values of - 62.2 mV and - 134.4 mV to 5 ppm and 100 ppm TEA at 500 °C, respectively. The response value of the sensor displays a logarithmic linear relationship with the concentration of TEA in the range of 1-100 ppm with the sensitivity of - 50.8 mV/decade. Besides, the sensor shows good response and recovery characteristics, and the response and recovery time to 10 ppm TEA is 10 s and 89 s, respectively. Moreover, the sensor possesses good humidity resistance, reproducibility and stability. The sensing behavior of the sensor is explained by the mixed potential sensing mechanism, which is confirmed by the measurement of the polarization curves. This work provides a good supplement for TEA gas sensor, which holds important application value for the sensitive detection of TEA in the environment.

Keywords: BiVO(4); Hazardous gas detection; Mixed potential; Pyrochlore-Gd(2)Zr(2)O(7); Triethylamine sensor.

MeSH terms

Electrodes
Electrolytes*
Ethylamines*
Humans
Reproducibility of Results

Substances

Electrolytes
Ethylamines
triethylamine