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Large‐Scale Synthesis of Silver Nanocubes: The Role of HCl in Promoting Cube Perfection and Monodispersity
Author(s) -
Im Sang Hyuk,
Lee Yun Tack,
Wiley Benjamin,
Xia Younan
Publication year - 2005
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.200462208
Subject(s) - nitric acid , materials science , etching (microfabrication) , single crystal , chloride , cube (algebra) , chemical engineering , nanotechnology , ion , inorganic chemistry , chemistry , crystallography , organic chemistry , metallurgy , layer (electronics) , engineering , mathematics , combinatorics
One lump or two! Selective etching of twinned seeds, mediated by HCl and the oxygen in air, resulted in high yields of perfect single‐crystal silver nanocubes in a range of sizes (30–130 nm). The chloride ion enhances oxidation and prevents aggregation, while the proton decreases the rate of reduction and facilitates etching through the formation of nitric acid.