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Turning Catalysts on by Light‐Induced Stress: When Red Means Go
Author(s) -
Latyshev Vitalii,
Shylenko Oleg,
Bilanych Vitalij,
Stamenkovic Vojislav,
Rizak Vasyl,
Feher Alexander,
Kovalcikova Alexandra,
Komanicky Vladimir
Publication year - 2019
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201900393
Subject(s) - platinum , materials science , chalcogenide , catalysis , sputter deposition , thin film , layer (electronics) , chalcogenide glass , electrolyte , stress (linguistics) , composite material , semiconductor , perchloric acid , chemical engineering , sputtering , inorganic chemistry , metallurgy , nanotechnology , optoelectronics , chemistry , electrode , organic chemistry , philosophy , engineering , linguistics
We report the activation of platinum catalyst thin films for oxygen reduction reaction in perchloric acid electrolytes when the films are subjected to mechanical stress. The catalysts films were deposited by magnetron sputtering on photosensitive chalcogenide As 20 Se 80 semiconductor glass layer. When platinum films are illuminated by red laser light the glass under semitransparent platinum film exhibits photo‐induced flow. The material flow underneath platinum film induces mechanical stress resulting in film wrinkling and significant increase in its catalytic activity.