Open Access Nano Express

Synthesis of size-controlled monodisperse Pd nanoparticles via a non-aqueous seed-mediated growth

Lei Zhang12, Lin Wang12, Zhiyuan Jiang12* and Zhaoxiong Xie12

Author Affiliations

1 State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China

2 Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China

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Nanoscale Research Letters 2012, 7:312  doi:10.1186/1556-276X-7-312

Published: 19 June 2012

Abstract

We demonstrated that stepwise seed-mediated growth could be extended in non-aqueous solution (solvothermal synthesis) and improved as an effective method for controlling the uniform size of palladium nanoparticles (Pd NPs) in a wide range. The monodisperse Pd NPs with the size of about 5 nm were synthesized by simply reducing Pd(acac)2 with formaldehyde in different organic amine solvents. By an improved stepwise seed-mediated synthesis, the size of the monodisperse Pd NPs can be precisely controlled from approximately 5 to 10 nm. The as-prepared Pd NPs could self assemble to well-shaped superlattice crystal without size selection process.

Keywords:
Nanocrystalline materials; Crystal growth; Pd; Non-aqueous seed-mediated growth; Self-assembly