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Anodization of Gold in Oxalate Solution To Form a Nanoporous Black Film
Author(s) -
Nishio Kazuyuki,
Masuda Hideki
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201005700
Subject(s) - nanoporous , nanopore , oxalate , anodizing , anode , materials science , chemical engineering , nanotechnology , chemistry , inorganic chemistry , metallurgy , aluminium , electrode , engineering
Black gold, but no oil : A nanoporous black gold film was formed by the anodization of gold in oxalate solution. The film had a spongelike porous configuration with a uniform hole size of approximately 20 nm (see picture). The formation mechanism has not yet been clarified, but carbonaceous matter produced by the anodic reaction of oxalate ions likely contributes to the growth of numerous nanopores on the gold anode.