Mesoporous ZnO nanosheet as gas sensor for sensitive triethylamine detection

Li Zhang; Ming Yin; Jingxuan Qiu; Tianyi Qiu; Yan Chen; Shuyan Qi; Xiuxia Wei; Xinxin Tian; Dongpo Xu

doi:10.1007/s00216-021-03855-x

Mesoporous ZnO nanosheet as gas sensor for sensitive triethylamine detection

Anal Bioanal Chem. 2022 Mar;414(6):2181-2188. doi: 10.1007/s00216-021-03855-x. Epub 2022 Jan 10.

Authors

Li Zhang^#¹, Ming Yin^#¹, Jingxuan Qiu¹, Tianyi Qiu², Yan Chen¹, Shuyan Qi¹, Xiuxia Wei¹, Xinxin Tian¹, Dongpo Xu³

Affiliations

¹ School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
² Shanghai Public Health Clinical Center, Fudan University, Shanghai, 200433, China.
³ School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China. xudongpo@usst.edu.cn.

^# Contributed equally.

PMID: 35013807
DOI: 10.1007/s00216-021-03855-x

Abstract

In this paper, mesoporous ZnO nanosheets were synthesized by the hydrothermal method using polystyrene-polyacrylic acid (PS-PAA) as the template. The morphology, structure, and composition of the samples were characterized by SEM, TEM, XRD, and XPS, and the physical properties of the samples were tested by N₂ adsorption-desorption curve. The results showed that the mesoporous ZnO nanosheets presented a flower-like appearance. Each flower is composed of flake petals which consist of nanoparticles of different sizes, with a large specific surface area. Gas sensitivity test results show that the ZnO gas sensor has good triethylamine (TEA) sensing performance. Its response to 50 ppm TEA can reach 43.771, and the detection limit is as low as 1 ppm, showing the characteristics of rapid response/recovery.

Keywords: Gas sensor; Triethylamine; ZnO nanosheet.

Grants and funding

32000470/the National Natural Science Foundation of China