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Pure Appl. Chem., 2009, Vol. 81, No. 12, pp. 2377-2385

Published online 2009-11-18

Shape-controlled synthesis of palladium nanocrystals by microwave irradiation

Yanchun Yu1, Yanxi Zhao1, Tao Huang1* and Hanfan Liu1,2*

1 College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
2 Institute of Chemistry, Chinese Academy of Science, Beijing 100080, China

Abstract: The controlled synthesis of Pd icosahedra in tetraethylene glycol (TEG) with H2PdCl4 as a precursor and poly(vinylpyrrolidone) (PVP) as a stabilizer in the presence of an appropriate amount of KOH under microwave irradiation was demonstrated. TEG served as both solvent and reducing agent, and stable Pd icosahedra with uniform sizes and well-defined shapes could be prepared in a yield of over 90 % by microwave heating for 60 s. The sizes of Pd icosahedra can be well controlled by adjusting the concentration of the precursor H2PdCl4.