Highly Active TiO2 Photocatalysts for Hydrogen Production through a Combination of Commercial TiO2 Material Selection and Platinum Co-Catalyst Deposition Using a Colloidal Approach with Green Reductants

dc.contributor.authorSchwarze, Michael
dc.contributor.authorKlingbeil, Charly
dc.contributor.authorDo, Ha Uyen
dc.contributor.authorKutorglo, Edith Mawunya
dc.contributor.authorParapat, Riny Yolandha
dc.contributor.authorTasbihi, Minoo
dc.date.accessioned2021-09-16T09:55:56Z
dc.date.available2021-09-16T09:55:56Z
dc.date.issued2021-08-25
dc.date.updated2021-09-13T18:16:22Z
dc.description.abstractIn this contribution, four different commercial TiO2 catalysts (P25, P90, PC105, and PC500) were screened for the photocatalytic production of hydrogen using ethanol as the sacrificial agent. The physico-chemical properties of the TiO2 powders were characterized by using different methods. The photocatalysts mainly vary in the ratio of anatase and rutile phases, and in the surface area. It was found that the photocatalytic activity is governed by the surface area of the photocatalyst. Pure TiO2,PC500 showed the best performance, and in comparison to P25, the activity was more than twenty times higher due to its high surface area of about 270 m2 g−1. For further improvement of the photocatalytic activity, platinum nanoparticles (PtNPs) were immobilized onto TiO2,PC500 using two methods: a colloidal approach and a photodeposition method. For the reduction of the platinum salt precursor in the colloidal approach, different green reducing agents were used in comparison to ascorbic acid. The obtained platinum nanoparticles using natural reductants showed a higher photocatalytic activity due to the formation of smaller nanoparticles, as proven by transmission electron microscopy (TEM). The highest activity was obtained when mangosteen was used as the green reducing agent. Compared to ascorbic acid as a classical reducing agent, the photocatalytic activity of the Pt@TiO2,PC500 prepared with mangosteen was about 2–3 times higher in comparison to other as-prepared photocatalysts. The Pt@TiO2,PC500 catalyst was further studied under different operating conditions, such as catalyst and sacrificial agent concentration.en
dc.description.sponsorshipDFG, 390540038, EXC 2008: Unifying Systems in Catalysis "UniSysCat"en
dc.description.sponsorshipDFG, 414044773, Open Access Publizieren 2021 - 2022 / Technische Universität Berlinen
dc.identifier.eissn2073-4344
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/13597
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-12384
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftende
dc.subject.othercommercial titaniaen
dc.subject.othergreen reductanten
dc.subject.otherPt nanoparticlesen
dc.subject.otherhydrogen productionen
dc.subject.otherco-catalysten
dc.titleHighly Active TiO2 Photocatalysts for Hydrogen Production through a Combination of Commercial TiO2 Material Selection and Platinum Co-Catalyst Deposition Using a Colloidal Approach with Green Reductantsen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber1027en
dcterms.bibliographicCitation.doi10.3390/catal11091027en
dcterms.bibliographicCitation.issue9en
dcterms.bibliographicCitation.journaltitleCatalystsen
dcterms.bibliographicCitation.originalpublishernameMDPIen
dcterms.bibliographicCitation.originalpublisherplaceBaselen
dcterms.bibliographicCitation.volume11en
tub.accessrights.dnbfreeen
tub.affiliationFak. 2 Mathematik und Naturwissenschaften>Inst. Chemie>FG Mehrphasenreaktionstechnikde
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.groupFG Mehrphasenreaktionstechnikde
tub.affiliation.instituteInst. Chemiede
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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