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dc.contributor.authorXing, Congcong
dc.contributor.authorLiu, Yongpeng
dc.contributor.authorZhang, Yu
dc.contributor.authorWang, Xiang
dc.contributor.authorGuardia, Pablo
dc.contributor.authorYao, Liang
dc.contributor.authorHan, Xu
dc.contributor.authorZhang, Ting
dc.contributor.authorArbiol Cobos, Jordi
dc.contributor.authorSoler Turu, Lluís
dc.contributor.authorChen, Yufen
dc.contributor.authorSivula, Kevin
dc.contributor.authorGuijarro, Néstor
dc.contributor.authorCabot, Andreu
dc.contributor.authorLlorca Piqué, Jordi
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Enginyeria de Processos Químics
dc.contributor.otherUniversitat Politècnica de Catalunya. Institut de Tècniques Energètiques
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2021-04-29T11:01:44Z
dc.date.issued2021-01-01
dc.identifier.citationXing, C. [et al.]. A direct Z-scheme for the photocatalytic hydrogen production from a water ethanol mixture on CoTiO3/TiO2 heterostructures. "ACS applied materials and interfaces", 1 Gener 2021, vol. 13, núm. 1, p. 449-457.
dc.identifier.issn1944-8244
dc.identifier.urihttp://hdl.handle.net/2117/344795
dc.description.abstractPhotocatalytic H2 evolution from ethanol dehydrogenation is a convenient strategy to store solar energy in a highly valuable fuel with potential zero net CO2 balance. Herein, we report on the synthesis of CoTiO3/TiO2 composite catalysts with controlled amounts of highly distributed CoTiO3 nanodomains for photocatalytic ethanol dehydrogenation. We demonstrate these materials to provide outstanding hydrogen evolution rates under UV and visible illumination. The origin of this enhanced activity is extensively analyzed. In contrast to previous assumptions, UV–vis absorption spectra and ultraviolet photoelectron spectroscopy (UPS) prove CoTiO3/TiO2 heterostructures to have a type II band alignment, with the conduction band minimum of CoTiO3 below the H2/H+ energy level. Additional steady-state photoluminescence (PL) spectra, time-resolved PL spectra (TRPLS), and electrochemical characterization prove such heterostructures to result in enlarged lifetimes of the photogenerated charge carriers. These experimental evidence point toward a direct Z-scheme as the mechanism enabling the high photocatalytic activity of CoTiO3/TiO2 composites toward ethanol dehydrogenation. In addition, we probe small changes of temperature to strongly modify the photocatalytic activity of the materials tested, which could be used to further promote performance in a solar thermophotocatalytic reactor.
dc.format.extent9 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshPhotocatalysis
dc.subject.lcshHydrogen
dc.subject.lcshTitanium dioxide
dc.subject.otherBioethanol
dc.subject.otherPhotocatalysis
dc.subject.otherHydrogen
dc.subject.otherTitanium dioxide
dc.subject.otherZ-scheme
dc.subject.otherTitanate
dc.subject.otherDehydrogenation
dc.titleA direct Z-scheme for the photocatalytic hydrogen production from a water ethanol mixture on CoTiO3/TiO2 heterostructures
dc.typeArticle
dc.subject.lemacBioetanol
dc.subject.lemacFotocatàlisi
dc.subject.lemacHidrogen
dc.subject.lemacDiòxid de titani
dc.contributor.groupUniversitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia
dc.identifier.doi10.1021/acsami.0c17004
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://pubs.acs.org/doi/abs/10.1021/acsami.0c17004
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac30440021
dc.description.versionPostprint (author's final draft)
dc.date.lift2022-01-01
local.citation.authorXing, C.; Liu, Y.; Zhang, Y.; Wang, X.; Guardia, P.; Yao, L.; Han, X.; Zhang, T.; Arbiol, J.; Soler, L.; Chen, Y.; Sivula, K.; Guijarro, N.; Cabot, A.; Llorca, J.
local.citation.publicationNameACS applied materials and interfaces
local.citation.volume13
local.citation.number1
local.citation.startingPage449
local.citation.endingPage457


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Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain