Contribution of thin films of ZrO2 on TiO2 nanotubes electrodes applied in the photoelectrocatalytic CO2 conversion

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dc.contributor.authorPerini, João A. Lima [UNESP]
dc.contributor.authorCardoso, Juliano C. [UNESP]
dc.contributor.authorBrito, Juliana F. De [UNESP]
dc.contributor.authorZanoni, Maria V. Boldrin [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:36:48Z
dc.date.available2018-12-11T17:36:48Z
dc.date.issued2018-05-01
dc.description.abstractZirconium dioxide (ZrO2) nanoparticles deposited on TiO2 nanotube (NT) surfaces (30nm of diameter) improved the photoelectrocatalytic conversion of carbon dioxide to fuel alcohol. The deposition of ZrO2 nanoparticles was performed by a wet chemical deposition method, which provided excellent interaction with the nanotubular catalyst, as confirmed by surface analysis techniques. Methanol (485μmolL-1) and ethanol (268μmolL-1) were the main products generated under optimized condition after 60min of the photoelectrochemical reduction of dissolved CO2 in 0.1mol L-1 Na2SO4 solution (pH 4.0) by Ti/TiO2NT-ZrO2 at -0.3V vs. Ag/AgCl (3.0molL-1 KCl), under irradiation from an Hg lamp (120mWcm-2). The ZrO2 deposits on Ti/TiO2NT electrode surface amplified the photocurrent around 282% in -0.7V, compared to Ti/TiO2NT, increasing methanol and ethanol formation by 1054 and 2934%, respectively, after 60min of the photoelectrocatalysis process. These results demonstrated the potential of using composites of Ti/TiO2NT-ZrO2 in photoelectrocatalytic reduction of dissolved CO2 and contribute to the development of efficient technologies for fuel production and the reduction of pollutants emissions to the environment.en
dc.description.affiliationSão Paulo State University (UNESP) Institute of Chemistry, Rua Francisco Degni 55
dc.description.affiliationUnespSão Paulo State University (UNESP) Institute of Chemistry, Rua Francisco Degni 55
dc.format.extent245-263
dc.identifierhttp://dx.doi.org/10.1016/j.jcou.2018.04.005
dc.identifier.citationJournal of CO2 Utilization, v. 25, p. 245-263.
dc.identifier.doi10.1016/j.jcou.2018.04.005
dc.identifier.file2-s2.0-85045900916.pdf
dc.identifier.issn2212-9820
dc.identifier.scopus2-s2.0-85045900916
dc.identifier.urihttp://hdl.handle.net/11449/179799
dc.language.isoeng
dc.relation.ispartofJournal of CO2 Utilization
dc.relation.ispartofsjr1,199
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAdsorption
dc.subjectCO2 reduction
dc.subjectMethanol
dc.subjectPhotoelectrocatalysis
dc.subjectZirconia
dc.titleContribution of thin films of ZrO2 on TiO2 nanotubes electrodes applied in the photoelectrocatalytic CO2 conversionen
dc.typeArtigo

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