Influence of Cocatalysts (Ni, Co, and Cu) and Synthesis Method on the Photocatalytic Activity of Exfoliated Graphitic Carbon Nitride for Hydrogen Production

dc.contributor.authorRana, Adeem Ghaffar
dc.contributor.authorSchwarze, Michael
dc.contributor.authorTasbihi, Minoo
dc.contributor.authorSala, Xavier
dc.contributor.authorGarcía-Antón, Jordi
dc.contributor.authorMinceva, Mirjana
dc.date.accessioned2023-01-19T14:27:11Z
dc.date.available2023-01-19T14:27:11Z
dc.date.issued2022-11-14
dc.date.updated2022-12-07T14:47:25Z
dc.description.abstractExfoliated graphitic carbon nitride (ex-g-CN) was synthesized and loaded with non-noble metals (Ni, Cu, and Co). The synthesized catalysts were tested for hydrogen production using a 300-W Xe lamp equipped with a 395 nm cutoff filter. A noncommercial double-walled quartz-glass reactor irradiated from the side was used with a 1 g/L catalyst in 20 mL of a 10 vol% triethanolamine aqueous solution. For preliminary screening, the metal-loaded ex-g-CN was synthesized using the incipient wetness impregnation method. The highest hydrogen production was observed on the Ni-loaded ex-g-CN, which was selected to assess the impact of the synthesis method on hydrogen production. Ni-loaded ex-g-CN was synthesized using different synthesis methods: incipient wetness impregnation, colloidal deposition, and precipitation deposition. The catalysts were characterized by X-ray powder diffraction, X-ray photoelectron spectroscopy, nitrogen adsorption using the Brunauer–Emmett–Teller method, and transmission electron microscopy. The Ni-loaded ex-g-CN synthesized using the colloidal method performed best with a hydrogen production rate of 43.6 µmol h−1 g−1. By contrast, the catalysts synthesized using the impregnation and precipitation methods were less active, with 28.2 and 10.1 µmol h−1 g−1, respectively. The hydrogen production performance of the suspended catalyst (440 µmol m−2 g−1) showed to be superior to that of the corresponding immobilized catalyst (236 µmol m−2 g−1).
dc.description.sponsorshipDFG, 390540038, EXC 2008: Unifying Systems in Catalysis "UniSysCat"
dc.identifier.eissn2079-4991
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/18019
dc.identifier.urihttps://doi.org/10.14279/depositonce-16811
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftende
dc.subject.othergraphitic carbon nitride
dc.subject.otherwater splitting
dc.subject.otherhydrogen production
dc.subject.othernickel
dc.subject.othercocatalyst deposition
dc.titleInfluence of Cocatalysts (Ni, Co, and Cu) and Synthesis Method on the Photocatalytic Activity of Exfoliated Graphitic Carbon Nitride for Hydrogen Production
dc.typeArticle
dc.type.versionpublishedVersion
dcterms.bibliographicCitation.articlenumber4006
dcterms.bibliographicCitation.doi10.3390/nano12224006
dcterms.bibliographicCitation.issue22
dcterms.bibliographicCitation.journaltitleNanomaterials
dcterms.bibliographicCitation.originalpublishernameMDPI
dcterms.bibliographicCitation.originalpublisherplaceBasel
dcterms.bibliographicCitation.volume12
dcterms.rightsHolder.referenceCreative-Commons-Lizenz
tub.accessrights.dnbfree
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Chemie::FG Mehrphasenreaktionstechnik
tub.publisher.universityorinstitutionTechnische Universität Berlin

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