MOF-derived Co3O4-ZnO heterostructure for 3-methyl-1-butanol detection

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorBrazilian Center for Research in Energy and Materials (CNPEM)-
Autor(es): dc.creatorSantos, Gustavo S.M.-
Autor(es): dc.creatorde Sá, Bruna S.-
Autor(es): dc.creatorPerfecto, Tarcísio M.-
Autor(es): dc.creatorVolanti, Diogo P.-
Data de aceite: dc.date.accessioned2025-08-21T23:37:30Z-
Data de disponibilização: dc.date.available2025-08-21T23:37:30Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.snb.2024.135533-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/297291-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/297291-
Descrição: dc.descriptionMicrobial volatile organic compounds (MVOCs) detection with a fast response and high selectivity is barely studied. The challenge is developing a material that matches these factors in different sensing conditions, such as operating temperature and humidity. In this study, we searched for a better way to improve the gas sensing properties of cobalt oxide (Co3O4), synthesizing a MOF-derived (ZIF-67-ZIF-8) p-n heterojunction of Co3O4-ZnO and varying the molar concentrations of these metals. The Co3O4 was synthesized through a mixture of cobalt(II) nitrate hexahydrate and 2-methylimidazole in a simple process at room temperature, forming the ZIF-67, which was then calcinated. The Co3O4-ZnO and ZnO-Co3O4 heterostructures were synthesized by adding zinc(II) nitrate hexahydrate to produce ZIF-8 and create a heterojunction with ZIF-67, followed by calcination. The Co3O4-ZnO sample exhibited higher sensing performance than pure Co3O4 and the heterostructure ZnO-Co3O4. In this case, Co3O4-ZnO exhibited a higher response of 14.6 to 3-methyl-1-butanol (3M1B) with a selectivity ratio of 2.79. These findings could improve food control by monitoring the MVOCs produced by bacteria, such as Pseudomonas spp, in the spoilage process of shrimp. Furthermore, under 65% of relative humidity, this sensor demonstrated a response of 10.4. Therefore, improving the Co3O4 performance as a gas sensor was achievable with a p-n heterojunction of zinc and cobalt, indicating a suitable response under different conditions.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionLaboratory of Materials for Sustainability (LabMatSus) São Paulo State University (UNESP), Rua Cristóvão Colombo 2265-
Descrição: dc.descriptionBrazilian Agricultural Research Corporation (EMBRAPA)-
Descrição: dc.descriptionBrazilian Nanotechnology National Laboratory Brazilian Center for Research in Energy and Materials (CNPEM), SP-
Descrição: dc.descriptionLaboratory of Materials for Sustainability (LabMatSus) São Paulo State University (UNESP), Rua Cristóvão Colombo 2265-
Descrição: dc.descriptionFAPESP: 2018/01258-5-
Descrição: dc.descriptionFAPESP: 2020/02471-4-
Descrição: dc.descriptionFAPESP: 2020/05233-7-
Descrição: dc.descriptionFAPESP: 2020/06421-1-
Descrição: dc.descriptionCNPq: 311453/2021-0-
Idioma: dc.languageen-
Relação: dc.relationSensors and Actuators B: Chemical-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subject3-methyl-1-butanol-
Palavras-chave: dc.subjectCobalt oxide-
Palavras-chave: dc.subjectGas sensor-
Palavras-chave: dc.subjectMetal-organic framework-
Palavras-chave: dc.subjectSemiconductor-
Título: dc.titleMOF-derived Co3O4-ZnO heterostructure for 3-methyl-1-butanol detection-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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