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Generation of Reactive Oxygen Species on Au/TiO 2 after Treatment with Hydrogen: Testing the Link to Ethanol Low‐Temperature Oxidation
Author(s) -
Sobolev Vladimir I.,
Simakova Olga A.,
Koltunov Konstantin Y.
Publication year - 2011
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201100133
Subject(s) - catalysis , hydrogen , chemistry , oxygen , nanoparticle , ethanol , redox , inorganic chemistry , combinatorial chemistry , nanotechnology , materials science , organic chemistry
Reduction for oxidation: After preliminary treatment with molecular hydrogen, Au/TiO 2 and Au/Al 2 O 3 catalysts were able to induce O 2 isotope exchange at mild conditions (−15 °C), which is believed to proceed through highly reactive surface oxygen species. However, the relative intensity of such an exchange is markedly different (see picture) and is in accordance with the diverse profiles of ethanol oxidation over gold nanoparticles supported on TiO 2 , Al 2 O 3 , and SiO 2 matrixes.