Platinum nano-particles were deposited from 0.01 M hexaxhloroplatinate acid solutions on high oriented pyrolytic graphite substrates using a cyclic potential sweeping method. The particles were examined using scanning tunneling microscopy (STM). The Pt particles deposited on the highly oriented pyrolytic graphite from a 0.01 M hexaxhloroplatinate acid without supporting solute were about 5 nm in size with a small variance. It was found that these Pt nano-particles were ellipsoidal without apparent crystalline facet but with a high density of surface defects. The Pt particles deposited on the highly oriented pyrolytic graphite from a 0.01 M hexaxhloroplatinate acid with H 2SO4 as supporting solute were about 10-100 nm in size with a much greater variance. copyright The Electrochemical Society.
|Original language||English (US)|
|Number of pages||6|
|State||Published - Dec 1 2006|
|Event||Electrodeposition of Nanoengineered Materials - 208th Electrochemical Society Meeting - Los Angeles, CA, United States|
Duration: Oct 16 2005 → Oct 21 2005
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