Enhanced Gas-Sensing Performance of GO/TiO2 Composite by Photocatalysis
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Eunji | - |
dc.contributor.author | Lee, Doohee | - |
dc.contributor.author | Yoon, Jaesik | - |
dc.contributor.author | Yin, Yilin | - |
dc.contributor.author | Lee, You Na | - |
dc.contributor.author | Uprety, Sunil | - |
dc.contributor.author | Yoon, Young Soo | - |
dc.contributor.author | Kim, Dong-Joo | - |
dc.date.available | 2020-02-27T09:40:58Z | - |
dc.date.created | 2020-02-06 | - |
dc.date.issued | 2018-10 | - |
dc.identifier.issn | 1424-8220 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/3268 | - |
dc.description.abstract | Few studies have investigated the gas-sensing properties of graphene oxide/titanium dioxide (GO/TiO2) composite combined with photocatalytic effect. Room temperature gas-sensing properties of the GO/TiO2 composite were investigated towards various reducing gases. The composite sensor showed an enhanced gas response and a faster recovery time than a pure GO sensor due to the synergistic effect of the hybridization, such as creation of a hetero-junction at the interface and modulation of charge carrier density. However, the issue of long-term stability at room temperature still remains unsolved even after construction of a composite structure. To address this issue, the surface and hetero-junction of the GO/TiO2 composite were engineered via a UV process. A photocatalytic effect of TiO2 induced the reduction of the GO phase in the composite solution. The comparison of gas-sensing properties before and after the UV process clearly showed the transition from n-type to p-type gas-sensing behavior toward reducing gases. This transition revealed that the dominant sensing material is GO, and TiO2 enhanced the gas reaction by providing more reactive sites. With a UV-treated composite sensor, the function of identifying target gas was maintained over a one-month period, showing strong resistance to humidity. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | MDPI | - |
dc.relation.isPartOf | SENSORS | - |
dc.subject | REDUCED GRAPHENE OXIDE | - |
dc.subject | ROOM-TEMPERATURE | - |
dc.subject | TIO2-GRAPHENE NANOCOMPOSITES | - |
dc.subject | FUNCTIONAL-GROUPS | - |
dc.subject | AMMONIA DETECTION | - |
dc.subject | THIN-FILMS | - |
dc.subject | SENSORS | - |
dc.subject | DIOXIDE | - |
dc.subject | REDUCTION | - |
dc.subject | SEMICONDUCTOR | - |
dc.title | Enhanced Gas-Sensing Performance of GO/TiO2 Composite by Photocatalysis | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000448661500162 | - |
dc.identifier.doi | 10.3390/s18103334 | - |
dc.identifier.bibliographicCitation | SENSORS, v.18, no.10 | - |
dc.identifier.scopusid | 2-s2.0-85054780441 | - |
dc.citation.title | SENSORS | - |
dc.citation.volume | 18 | - |
dc.citation.number | 10 | - |
dc.contributor.affiliatedAuthor | Lee, You Na | - |
dc.contributor.affiliatedAuthor | Yoon, Young Soo | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | wearable gas sensor | - |
dc.subject.keywordAuthor | graphene oxide | - |
dc.subject.keywordAuthor | titanium dioxide | - |
dc.subject.keywordAuthor | graphene-metal oxide composite | - |
dc.subject.keywordAuthor | photocatalysis | - |
dc.subject.keywordAuthor | photoreduction | - |
dc.subject.keywordPlus | REDUCED GRAPHENE OXIDE | - |
dc.subject.keywordPlus | ROOM-TEMPERATURE | - |
dc.subject.keywordPlus | TIO2-GRAPHENE NANOCOMPOSITES | - |
dc.subject.keywordPlus | FUNCTIONAL-GROUPS | - |
dc.subject.keywordPlus | AMMONIA DETECTION | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | SENSORS | - |
dc.subject.keywordPlus | DIOXIDE | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | SEMICONDUCTOR | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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