TIEWCHAROEN, Supakit; WARAKULWIT, Chompunuch; LAPEYRE, Veronique; GARRIGUE, Patrick; FOURIER, Lucas; ELISSALDE, Catherine; BUFFIERE, Sonia; LEGROS, Philippe; GAYOT, Marion; LIMTRAKUL, Jumras; KUHN, Alexander

doi:10.1002/anie.201704393

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

TIEWCHAROEN, Supakit
Department of Chemistry and NANOTEC
Institut des Sciences Moléculaires [ISM]

WARAKULWIT, Chompunuch
Department of Chemistry and NANOTEC

LAPEYRE, Veronique
Institut des Sciences Moléculaires [ISM]

Langue

Article de revue

Ce document a été publié dans

Angewandte Chemie International Edition. 2017, vol. 56, n° 38, p. 11431-11435

Wiley-VCH Verlag

Résumé en anglais

Deposition 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.< Réduire

Mots clés en anglais

Bipolar electrochemistry

Janus particles

metal deposition

photochemistry

Métadonnées

Licence d’utilisation du document

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

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

DOI

Origine

Unités de recherche