Fast recovery triethylamine gas sensor with low detection limit based on NiTiO3-In2O3

被引：13
作者：
Meng, Fanli [1 ,2 ,3 ,4 ]
Qin, Liyun [1 ]
Guo, Hongliang [1 ,2 ,3 ,4 ]
Zhu, Hongmin [1 ]
Yuan, Zhenyu [1 ,2 ,3 ,4 ]
机构：
[1] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Peoples R China
[2] Hebei Key Lab Micronano Precis Opt Sensing & Meas, Qinhuangdao 066004, Hebei, Peoples R China
[3] Northeastern Univ, Natl Frontiers Sci Ctr Ind Intelligence & Syst Op, Shenyang 110819, Peoples R China
[4] Northeastern Univ, Key Lab Data Analyt & Optimizat Smart Ind, Minist Educ, Shenyang, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2024年 / 50卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Gas sensor; Hydrothermal method; Low detection limit; Triethylamine; SENSING PROPERTIES; NANOSHEETS;
D O I：
10.1016/j.ceramint.2023.10.334
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Triethylamine poses significant risks to human health, making it crucial to develop a triethylamine gas sensor with excellent performance for triethylamine detection. In this study, NiTiO3-modified In2O3 (NiTiO3-In2O3) materials with different ratios were prepared using a hydrothermal method. Among them, the 1 % NiTiO3-In2O3 material exhibited the best performance. The gas sensor showed high sensitivity (361) towards 100 ppm triethylamine gas at 250 degrees C, excellent selectivity, and a low detection limit (30 ppb). The crystal phases, elemental composition, and microstructure of the prepared compounds were observed using SEM, EDS, TEM, and XRD. Based on the characterization results, a detailed analysis of the gas sensing mechanism was conducted. The significant improvement in the sensing performance towards triethylamine can be ascribed to the alterations in surface characteristics and electron behavior induced by heterojunction formation, the catalytic efficacy of NiTiO3, and the cooperative interaction between these two constituents.
引用
收藏
页码：2733 / 2741
页数：9
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