Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박태주 | - |
dc.date.accessioned | 2022-07-27T01:01:05Z | - |
dc.date.available | 2022-07-27T01:01:05Z | - |
dc.date.issued | 2021-03 | - |
dc.identifier.citation | CERAMICS INTERNATIONAL, v. 47, NO 5, Page. 5985-5992 | en_US |
dc.identifier.issn | 0272-8842 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0272884220332260 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/171802 | - |
dc.description.abstract | Nanoporous SnO2@TiO2 heterostructure was synthesized by a facile two-step dry process, modified thermal evaporation followed by atomic layer deposition (ALD). The introduction of inert gas, Ar, with a pressure of 0.2 Torr during thermal evaporation of SnO, enabled the formation of the nanoporous 3D structure by inducing the collision and loss of kinetic energy during deposition. A photocatalytic material, TiO2, was grown on the porous structure of SnO2 to detect target gas, formaldehyde, under UV irradiation selectively. Microstructural and elemental analysis with a transmission electron microscope and X-ray photoelectron spectroscopy confirmed the porous structure of SnO2 induced by our evaporation process as well as the conformal coating of TiO2 on the porous structure. The sensing capabilities of a photoactive sensor on the formaldehyde were assessed in terms of the film porosity, irradiated UV power, and thickness of photoactive materials at room temperature. As a result, the SnO2@TiO2 heterostructure, with an optimum thickness of TiO2 exhibited low detection limit, down to 0.1 ppm, good linearity to the concentration of formaldehyde in the range of 0.1-10 ppm, and high response of 15% in the HCHO 0.1 ppm. This core-shell porous structure developed by modified thermal evaporation combined with ALD paved the way for 3D architectures to explore various applications, such as biosensors, photocatalysts, and optoelectronic devices. | en_US |
dc.description.sponsorship | This work was supported by the Technology Innovation Program (Project No. 20010727) funded by the Ministry of Trade, Industry and Energy. | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER SCI LTD | en_US |
dc.subject | HCHO gas sensor | en_US |
dc.subject | Photoactive gas sensor | en_US |
dc.subject | Metal oxide heterostructure | en_US |
dc.subject | Thermal evaporation | en_US |
dc.subject | Atomic layer deposition | en_US |
dc.subject | Porous structure | en_US |
dc.title | Enhanced response of the photoactive gas sensor on formaldehyde using porous SnO2@TiO2 heterostructure driven by gas-flow thermal evaporation and atomic layer deposition | en_US |
dc.type | Article | en_US |
dc.relation.no | 5 | - |
dc.relation.volume | 47 | - |
dc.identifier.doi | 10.1016/j.ceramint.2020.10.172 | - |
dc.relation.page | 5985-5992 | - |
dc.relation.journal | CERAMICS INTERNATIONAL | - |
dc.contributor.googleauthor | Chang, Hyeon-Kyung | - |
dc.contributor.googleauthor | Ko, Dong-Su | - |
dc.contributor.googleauthor | Cho, Deok-Hyun | - |
dc.contributor.googleauthor | Kim, Sungjin | - |
dc.contributor.googleauthor | Lee, Ho-Nyun | - |
dc.contributor.googleauthor | Lee, Hyo Sug | - |
dc.contributor.googleauthor | Kim, Hyun-Jong | - |
dc.contributor.googleauthor | Park, Tae Joo | - |
dc.contributor.googleauthor | Park, Young Min | - |
dc.relation.code | 2021004738 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF ENGINEERING SCIENCES[E] | - |
dc.sector.department | DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING | - |
dc.identifier.pid | tjp | - |
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