Realization of H2S sensing by Pd-functionalized networked CuO nanowires in self-heating mode
- Title
- Realization of H2S sensing by Pd-functionalized networked CuO nanowires in self-heating mode
- Author
- 김현우
- Keywords
- CuO; Nanowire; Pd-functionalization; H2S sensing; Self-heating test; Gas sensor
- Issue Date
- 2019-11
- Publisher
- ELSEVIER SCIENCE SA
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, v. 299, article no. 126965
- Abstract
- In this study, we fabricated pristine and Pd-functionalized CuO nanowires (NWs) for H2S gas sensing. The CuO NWs were synthesized using a vapor-liquid-solid method and the Pd functionalization was achieved by ultraviolet irradiation of a Pd precursor solution in the presence of the CuO NWs. The characterization results confirmed the formation of pristine and Pd-functionalized CuO NWs with favorable compositions and morphologies. The gas-sensing response of the NWs towards H2S was enhanced by the Pd functionalization, at 25-100 degrees C. Moreover, self-heating tests showed that the Pd-functionalized gas sensors exhibited a selective response to H2S gas when a low voltage (5 V) was applied. The superior performance of the Pd-functionalized gas sensor was attributable to not only the catalytic effects of both CuS and Pd but also the CuO/Pd heterostructures. The results demonstrate that the fabricated H2S sensors are energy-efficient and could be used in various electronic devices.
- URI
- https://www.sciencedirect.com/science/article/pii/S0925400519311645?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/155192
- ISSN
- 0925-4005
- DOI
- 10.1016/j.snb.2019.126965
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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