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Anisotropic metal deposition on TiO2 particles by electric-field-induced charge separation

hal.structure.identifierDepartment of Chemistry and NANOTEC
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorTIEWCHAROEN, Supakit
hal.structure.identifierDepartment of Chemistry and NANOTEC
dc.contributor.authorWARAKULWIT, Chompunuch
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorLAPEYRE, Veronique
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorGARRIGUE, Patrick
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFOURIER, Lucas
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorELISSALDE, Catherine
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBUFFIERE, Sonia
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorLEGROS, Philippe
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorGAYOT, Marion
hal.structure.identifierDepartment of Materials Science and Engineering
dc.contributor.authorLIMTRAKUL, Jumras
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorKUHN, Alexander
dc.date.issued2017
dc.identifier.issn1433-7851
dc.description.abstractEnDeposition of metals on TiO2 semiconductor particles (M-TiO2) results in hybrid Janus objects combining the properties of both materials. One of the techniques proposed to generate Janus particles is bipolar electrochemistry (BPE). The concept can be applied in a straightforward way for the site-selective modification of conducting particles, but is much less obvious to use for semiconductors. Herein we report the bulk synthesis of anisotropic M-TiO2 particles based on the synergy of BPE and photochemistry, allowing the intrinsic limitations, when they are used separately, to be overcome. When applying electric fields during irradiation, electrons and holes can be efficiently separated, thus breaking the symmetry of particles by modifying them selectively and in a wireless way on one side with either gold or platinum. Such hybrid materials are an important first step towards high-performance designer catalyst particles, for example for photosplitting of water.
dc.language.isoen
dc.publisherWiley-VCH Verlag
dc.subject.enBipolar electrochemistry
dc.subject.enJanus particles
dc.subject.enmetal deposition
dc.subject.enphotochemistry
dc.title.enAnisotropic metal deposition on TiO2 particles by electric-field-induced charge separation
dc.typeArticle de revue
dc.identifier.doi10.1002/anie.201704393
dc.subject.halChimie/Matériaux
bordeaux.journalAngewandte Chemie International Edition
bordeaux.page11431-11435
bordeaux.volume56
bordeaux.issue38
bordeaux.peerReviewedoui
hal.identifierhal-01587892
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01587892v1
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