NGQDs modified nanoporous TiO2/graphene foam nanocomposite for excellent sensing response to formaldehyde at high relative humidity
DC Field | Value | Language |
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dc.contributor.author | Shao, Shaofeng | - |
dc.contributor.author | Kim, Hyoun Woo | - |
dc.contributor.author | Kim, Sang Sub | - |
dc.contributor.author | Chen, Yunyun | - |
dc.contributor.author | Lai, Min | - |
dc.date.accessioned | 2021-07-30T04:53:36Z | - |
dc.date.available | 2021-07-30T04:53:36Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2020-06 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1907 | - |
dc.description.abstract | In the vast majority of early breathing detection, nano-semiconductor gas sensors were widely used due to their high sensing activity and a relatively simple manufacturing process. We developed a simple post-synthetic hydrothermal treatment to fabricate a novel 3-dimensional (3D) structure gas micro-sensor, in which Au modified nanoporous N doped graphene quantum dots (NGQDs)/TiO2 nanospheres were uniformly distributed throughout the graphene foam frameworks. The obtained graphene network-based nanoporous TiO2 gas micro-sensors with a high specific surface area provided a wealth of reaction sites for gas molecular diffusion and improve the response to target gas. The nanocomposites exhibited excellent gas-sensing performance toward ppb-level formaldehyde vapor by contrast gas detection, implying the application prospect in the aspect of breathing detection. More importantly, the graphene foam-based nanocomposites also presented outstanding selectivity and long-term stability. The excellent gas sensing properties were mainly attributed to the combination of NGQDs with TiO2 nanospheres, which indicated that the number of adsorbed oxygen and nano-heterojunction played an important role in enhancing the formaldehyde (HCHO) sensing performance of nanocomposites. Our work has updated a versatile synthesis strategy so that it can be programmed to design a broad series of nanoporous functional composites according to high sensing performance and general adaptability. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.title | NGQDs modified nanoporous TiO2/graphene foam nanocomposite for excellent sensing response to formaldehyde at high relative humidity | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hyoun Woo | - |
dc.identifier.doi | 10.1016/j.apsusc.2020.145932 | - |
dc.identifier.scopusid | 2-s2.0-85082025713 | - |
dc.identifier.wosid | 000539643600008 | - |
dc.identifier.bibliographicCitation | APPLIED SURFACE SCIENCE, v.516, pp.1 - 13 | - |
dc.relation.isPartOf | APPLIED SURFACE SCIENCE | - |
dc.citation.title | APPLIED SURFACE SCIENCE | - |
dc.citation.volume | 516 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 13 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Coatings & Films | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | GRAPHENE QUANTUM DOTS | - |
dc.subject.keywordPlus | NANOSTRUCTURES SYNTHESIS | - |
dc.subject.keywordPlus | ANATASE TIO2 | - |
dc.subject.keywordPlus | GAS SENSOR | - |
dc.subject.keywordPlus | P-TYPE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | SPONGE | - |
dc.subject.keywordPlus | FACETS | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordAuthor | NGQDs | - |
dc.subject.keywordAuthor | TiO2 | - |
dc.subject.keywordAuthor | Graphene foam | - |
dc.subject.keywordAuthor | HCHO detection | - |
dc.subject.keywordAuthor | Sensors | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0169433220306887?via%3Dihub | - |
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