| Title: | Enhanced Gas Sensitivity of Au-Decorated Flowery WSe(2) Nanostructures |
| Author(s): | Zhang X; Tan Q; Wang Q; Yang P; Liu Y; |
| Address: | "College of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China. Yunnan Provincial Key Laboratory for Photoelectric Information Technology, Yunnan Normal University, Kunming 650500, China. Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, China" |
| ISSN/ISBN: | 2079-4991 (Print) 2079-4991 (Electronic) 2079-4991 (Linking) |
| Abstract: | "With the continuous improvement in material life, people are paying more and more attention to air quality; therefore, it is critical to design efficient and stable gas sensor devices. In this work, a flowery WSe(2) nanostructure and its nanocomposite (Au@WSe(2)) decorated with Au nanoparticles were fabricated by the hydrothermal method. The performance of a resistive sensor with flowery WSe(2) and Au@WSe(2) sensors was evaluated by detecting volatile organic compounds such as ethanol, isoamylol, n-butyl alcohol, isopropanol, isobutanol and n-propanol. The results show that Au-nanoparticle-decorated flowery WSe(2) can decrease the optimal working temperature from 215 degrees C to 205 degrees C and significantly enhance the response of flowery WSe(2). The response values to isoamylol are the highest (as high as 44.5) at a low gas concentration (100 ppm), while the response values to ethanol are the highest (as high as 178.5) at a high gas concentration (1000 ppm) among the six different alcohols. Moreover, the response is steady and repeatable. The results demonstrate that the Au@WSe(2) substrate has good responsiveness and selectivity, which makes it a promising candidate for gas detection" |
| Keywords: | Au nanoparticle alcohol detection flowery WSe2 gas sensors; |
| Notes: | "PubMed-not-MEDLINEZhang, Xia Tan, Qiuhong Wang, Qianjin Yang, Peizhi Liu, Yingkai eng 11864046 and 11764046/National Natural Science Foundation of China/ 202001AT070064 and 202101AT070124/Basic Research Program of Yunnan Province/ 2022SCP005/Spring City Plan: the High-level Talent Promotion and Training Project of Kunming/ Switzerland 2022/12/12 Nanomaterials (Basel). 2022 Nov 27; 12(23):4221. doi: 10.3390/nano12234221" |
