Direct Z-scheme among Niobium Pentoxide and Poly(heptazine imide) for NH3 Photoelectrosynthesis under Ambient Conditions

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Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorBlaskievicz, Sirlon F.-
Autor(es): dc.creatorFreitas Teixeira, Ivo-
Autor(es): dc.creatorMascaro, Lucia Helena-
Autor(es): dc.creatorFerreira de Brito, Juliana-
Data de aceite: dc.date.accessioned2025-08-21T22:33:58Z-
Data de disponibilização: dc.date.available2025-08-21T22:33:58Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-03-08-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/cctc.202201610-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/246718-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/246718-
Descrição: dc.descriptionThere is a crescent need to improve well-known processes to environmentally friendly options, and NH3 production is not an exception. Herein, we describe the photoelectrochemical nitrogen reduction reaction under a carbon nitride, the poly(heptazine imide) (PHI) using mild conditions for NH3 synthesis. For this purpose, PHI was combined with Nb2O5 nanotubes, leading to a new photocathode with a charge transfer process in a Z-scheme structure. The photoelectrocatalytic N2 reduction was carried out in Nb2O5Nt/PHI using solar-simulated radiation and with an applied bias of −0.3 VAg/AgCl. The PHI presence in the photocathode showed not only superior stability compared to bare Nb2O5, but also an ammonia generation rate of 0.156 mmol L−1 h−1 cm−2, which is about 10-fold higher than the amount obtained with niobium oxide alone. The mild and green conditions employed for ammonia generation place the obtained photocathode as a promising option for the currently used Haber-Bosch process.-
Descrição: dc.descriptionDepartment of Chemistry Federal University of São Carlos—UFSCar –, Rod. Washington Luiz, Km 235-
Descrição: dc.descriptionAlternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry Universidade Estadual Paulista (UNESP)-
Descrição: dc.descriptionAlternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry Universidade Estadual Paulista (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationChemCatChem-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAmmonia synthesis-
Palavras-chave: dc.subjectN2 reduction-
Palavras-chave: dc.subjectPhotoelectrocatalysis-
Palavras-chave: dc.subjectPoly(Heptazine Imide)-
Palavras-chave: dc.subjectPolymeric carbon nitrides-
Título: dc.titleDirect Z-scheme among Niobium Pentoxide and Poly(heptazine imide) for NH3 Photoelectrosynthesis under Ambient Conditions-
Tipo de arquivo: dc.typelivro digital-
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