| Title: | Double-layer capsule of mesoporous ZnO@SnO(2) for sensitive detection of triethylamine |
| Author(s): | Yin M; Zhang L; Qiu T; Chen Y; Qi S; Wei X; Tian X; Ge K; Qiu J; Xu D; |
| Address: | "School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China. xudongpo@usst.edu.cn. Shanghai Public Health Clinical Center, PR China" |
| ISSN/ISBN: | 1364-5528 (Electronic) 0003-2654 (Linking) |
| Abstract: | "To overcome obstacles such as low response and poor selectivity of pure ZnO and SnO(2) gas sensors, the ZnO@SnO(2) sensor was synthesized by hydrothermal synthesis. The samples were characterized by XRD, XPS, SEM, HRTEM, N(2) adsorption-desorption and other techniques. The results show that ZnO@SnO(2) forms an n-n-type heterostructure and presents a double-layer capsule with a size of 0.5-4 mum. The results show that compared with pure ZnO and SnO(2), the ZnO@SnO(2) sensor exhibits a higher response (138.9) to 50 ppm triethylamine (TEA) at 152 degrees C, which is 19.56 times that of the pure ZnO sensor and 21.7 times that of the SnO(2) sensor. It has a short response/recovery time (11/11 s), excellent selectivity and cycling stability. Compared with other volatile organic compounds or gases, it has higher selectivity for TEA detection" |
| Keywords: | Ethylamines Gases Tin Compounds *Zinc Oxide; |
| Notes: | "MedlineYin, Ming Zhang, Li Qiu, Tianyi Chen, Yan Qi, Shuyan Wei, Xiuxia Tian, Xinxin Ge, Kangjie Qiu, Jingxuan Xu, Dongpo eng England 2021/09/14 Analyst. 2021 Oct 11; 146(20):6193-6201. doi: 10.1039/d1an01125a" |
