Photoelectrochemistry on TiO 2 /Ti anodes as a tool to increase the knowledge about some photo‐oxidation mechanisms in CH 3 CN | Zendy

Bettoni Marta | Zendy; Rol Cesare | Zendy; Sebastiani Giovanni V. | Zendy

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Photoelectrochemistry on TiO 2 /Ti anodes as a tool to increase the knowledge about some photo‐oxidation mechanisms in CH 3 CN

Author(s) -

Bettoni Marta,

Rol Cesare,

Sebastiani Giovanni V.

Publication year - 2008

Publication title -

journal of physical organic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.325

H-Index - 66

eISSN - 1099-1395

pISSN - 0894-3230

DOI - 10.1002/poc.1303

Subject(s) - chemistry , rutile , photoelectrochemistry , substrate (aquarium) , anode , anodic oxidation , photochemistry , electron , semiconductor , oxygen , radical ion , inorganic chemistry , electrochemistry , electrode , organic chemistry , ion , optoelectronics , oceanography , physics , quantum mechanics , geology

Through current efficiency measurements, obtained from the photoelectrochemical oxidation at TiO 2 (rutile)/Ti anodes, further mechanistic information has been obtained regarding the TiO 2 photosensitized oxidation of benzylic alcohols, ethers and 1,2‐diols in CH 3 CN. In deaerated medium, two electrons are captured by the semiconductor from all the considered substrates (one from the substrate, the second from the intermediate benzylic radical). In contrast, in aerated CH 3 CN, the number of TiO 2 ‐captured electrons can be reduced to one because, depending on its oxidizability, the benzylic radical can be competitively captured by oxygen. Copyright © 2008 John Wiley & Sons, Ltd.

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