Redox exfoliated NbS2: characterization, stability, and oxidation

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dc.contributor.authorNagaoka D.A.
dc.contributor.authorGrasseschi D.
dc.contributor.authorCadore A.R.
dc.contributor.authorFonsaca J.E.S.
dc.contributor.authorJawaid A.M.
dc.contributor.authorVaia R.A.
dc.contributor.authorde Matos C.J.S.
dc.date.accessioned2024-03-12T19:10:02Z
dc.date.available2024-03-12T19:10:02Z
dc.date.issued2023
dc.description.abstract© 2023 The Royal Society of Chemistry.Niobium disulfide is a layered transition metal dichalcogenide that is being exploited as a two-dimensional material. Although it is a superconductor at low temperatures and demonstrates great potential to be applied as a catalyst or co-catalyst in hydrogen evolution reactions, only a few reports have demonstrated the synthesis of a few-layer NbS2. However, before applications can be pursued, it is essential to understand the main characteristics of the obtained material and its stability under an atmospheric environment. In this work, we conducted a thorough characterization of redox-exfoliated NbS2 nanoflakes regarding their structure and stability in an oxygen-rich environment. Structural, morphological, and spectroscopic characterization demonstrated different fingerprints associated with distinct oxidation processes. This led us to identify oxide species and analyse the stability of the redox exfoliated NbS2 nanosheets in air, suggesting the most likely reaction pathways during the NbS2 interaction with oxygen, which agrees with our density-functional theory results. The mastery over the stability of layered materials is of paramount importance to target future applications, mainly because the electronic properties of these materials are strongly affected by an oxidizing environment.
dc.description.firstpage9559
dc.description.issuenumber13
dc.description.lastpage9568
dc.description.volume25
dc.identifier.doi10.1039/d2cp05197d
dc.identifier.issn1463-9076
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34100
dc.relation.ispartofPhysical Chemistry Chemical Physics
dc.rightsAcesso Restrito
dc.titleRedox exfoliated NbS2: characterization, stability, and oxidation
dc.typeArtigo
local.scopus.citations2
local.scopus.eid2-s2.0-85151167947
local.scopus.subjectAtmospheric environment
local.scopus.subjectCo catalysts
local.scopus.subjectHydrogen evolution reactions
local.scopus.subjectLows-temperatures
local.scopus.subjectNano-flakes
local.scopus.subjectOxygen-rich environment
local.scopus.subjectStructural characterization
local.scopus.subjectTransition metal dichalcogenides (TMD)
local.scopus.subjectTwo-dimensional materials
local.scopus.subject]+ catalyst
local.scopus.updated2024-09-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85151167947&origin=inward
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