Surface Field Effect-Enhanced Cu-Doped W<sub>18</sub>O<sub>49</sub> Nanowires for Fast Response H<sub>2</sub>S Sensors
Accurately detecting hydrogen sulfide in the environment and monitoring its pollution sources are crucial for pollution assessment and personal safety. However, rapid detection is a challenge due to the influence of carrier behavior and surface adsorption states. In this paper, Cu-doped W<sub>18</sub>O<sub>49</sub> nanowires were synthesized by the solvothermal method. The surface field effect phenomenon resulting from doping and H<sub>2</sub>S adsorption enables a rapid response to H<sub>2</sub>S with significantly improved responsivity. We characterized the material's structure and properties by SEM, TEM, and XRD techniques, verified the surface microelectric field effect by combining XPS and field effect device in situ gas sensing characterization, and discussed the sensitive mechanism of hydrogen sulfide.
Authors
- Shuo Cheng (ORCID: https://orcid.org/0000-0002-5410-9170)
- Bingsheng Li (ORCID: https://orcid.org/0000-0001-5199-6395)
- Jie Sun (ORCID: https://orcid.org/0000-0003-1489-5303)
- Lingli Ji
- Zhao Zhang (ORCID: https://orcid.org/0000-0002-3209-9071)
- Feng Gao (ORCID: https://orcid.org/0000-0003-3835-6929)
Institutions
- Harbin Normal University (CN)
- Ministry of Education (BN)
Publication Details
- Journal
- ACS Sensors
- Published
- 2025-08-22
- DOI
- https://doi.org/10.1021/acssensors.5c01089
- Primary Topic
- Gas Sensing Nanomaterials and Sensors
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Natural Science Foundation of Heilongjiang Province