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Characterisation of Sonochemically Produced PdO Nanoparticles by X-ray Absorption Near Edge Structure Spectroscopy

✍ Scribed by Challa S. S. R. Kumar; Hartwig Modrow; Josef Hormes

Publisher: John Wiley and Sons
Year: 2002
Tongue: English
Weight: 387 KB
Volume: 19
Category: Article
ISSN: 0934-0866
DOI: 10.1002/1521-4117(200211)19:5<336::aid-ppsc336>3.0.co;2-v

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✦ Synopsis

lauryl ether] stabilised palladium nanoparticles, obtained on attempted sonochemical reduction of PdCl 2 by sodium sulfite in water under Argon, instantaneously oxidized to PdO. The particles obtained were stable and have narrow size distribution with an average size of 10 nm diameter. PdO nanoparticles were reduced to Pd nanoparticles in an autoclave by treatment with 50 bar hydrogen at 140 8C. The catalytic behaviour of Pd nanoparticles, thus obtained, is unusual in comparison with conventional Pd catalysts. The nanoparticles were characterized by UV-Vis spectroscopy, TEM and their X-ray Absorption Near Edge Structure (XANES) at the Pd-L-III edge.

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