| Title: | Ionic liquid([C(12)mim][PF(6)])-assisted synthesis of TiO(2) /Ti(2)O (PO(4))(2) nanosheets and the chemoresistive gas sensing of trimethylamine |
| Author(s): | Zhao D; Zhang X; Wang W; Sui L; Guo C; Xu Y; Cheng X; Major Z; Gao S; Huo L; |
| Address: | "Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China. School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China. xuyingming@hlju.edu.cn. Institute of Polymer Product Engineering, Johannes Kepler University Linz, Linz, Austria. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China. huolihua@hlju.edu.cn" |
| DOI: | 10.1007/s00604-021-04734-z |
| ISSN/ISBN: | 1436-5073 (Electronic) 0026-3672 (Linking) |
| Abstract: | "The architecture of PO(4)(3-) modified 2D TiO(2) nanosheets was constructed by ionic liquids (ILs)-assisted hydrothermal method. The nanosheet structure can be regulated by the addition of different amount of ionic liquid. Using the composite nanosheets a chemoresistive gas sensor was prepared for trimethylamine (TMA) detection. Most reported TMA sensors need to be operated at a relatively high operating temperature, but in this paper, the as-synthesized PO(4)(3-)-modified 2D TiO(2)/Ti(2)O(PO(4))(2) nanosheet sensor has high response (S = 87.46), short response time (14.6 s), and good reproducibility to 100 ppm TMA gas, when the temperature is 170 degrees C. In contrast to the single-phase TiO(2) sensor, the gas-sensing property of the composite one is obviously enhanced. Moreover, its response shows excellent linear relationship with TMA concentration from 0.2 to 500 ppm, and a detection limit of 0.2 ppm. The TMA detection mechanism was investigated by analyzing the changes of the surface adsorption oxygen content by XPS and gaseous products using gas chromatography after the sensor was in contact with TMA" |
| Keywords: | Adsorption Air Pollutants/*analysis/chemistry Gases/analysis/chemistry Imidazoles/chemistry Ionic Liquids/*chemistry Limit of Detection Methylamines/*analysis/chemistry Nanostructures/*chemistry Oxidation-Reduction Oxygen/chemistry Phosphates/chemical syn; |
| Notes: | "MedlineZhao, Dan Zhang, Xianfa Wang, Wenjing Sui, Lili Guo, Chuanyu Xu, Yingming Cheng, Xiaoli Major, Zoltan Gao, Shan Huo, Lihua eng 21771060/National Natural Science Foundation of China/ 61271126/National Natural Science Foundation of China/ Research Support, Non-U.S. Gov't Austria 2021/02/10 Mikrochim Acta. 2021 Feb 8; 188(3):74. doi: 10.1007/s00604-021-04734-z" |
