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Enhanced hydrogen evolution rates at high pH with a colloidal cadmium sulphide–platinum hybrid system
Author(s) -
Julian Schneider,
Aleksandar Vaneski,
Georg R. Pesch,
Andrei S. Susha,
Wey Yang Teoh,
Andrey L. Rogach
Publication year - 2014
Publication title -
apl materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.571
H-Index - 60
ISSN - 2166-532X
DOI - 10.1063/1.4904070
Subject(s) - triethanolamine , materials science , hydrogen , nanorod , platinum , inorganic chemistry , radical , platinum nanoparticles , cadmium , nanoparticle , chemical engineering , colloid , nanotechnology , catalysis , chemistry , metallurgy , organic chemistry , analytical chemistry (journal) , engineering
We demonstrate enhanced hydrogen generation rates at high pH using colloidal cadmium sulphide nanorods decorated with Pt nanoparticles. We introduce a simplified procedure for the decoration and subsequent hydrogen generation, reducing both the number of working steps and the materials costs. Different Pt precursor concentrations were tested to reveal the optimal conditions for the efficient hydrogen evolution. A sharp increase in hydrogen evolution rates was measured at pH 13 and above, a condition at which the surface charge transfer was efficiently mediated by the formation of hydroxyl radicals and further consumption by the sacrificial triethanolamine hole scavenger

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