title: Aqueous-phase synthesis of single-crystal Pd seeds 3 nm in diameter and their use for the growth of Pd nanocrystals with different shapes.
abstract: This article describes an aqueous method for the synthesis of Pd seeds with a single-crystal structure and a uniform diameter of 3 nm and their use for the growth of Pd nanocrystals with a variety of shapes. We have also investigated the effects of a number of parameters, including the temperature, reducing power of the reductant, and capping agent on the reduction rate of a Pd precursor, and thus the final size, size distribution, and morphology of the Pd seeds. By taking advantage of the coordination effect of Br(-) ions with Pd(2+) ions and their selective adsorption on the Pd(100) surface, Pd nanocrystals with a number of distinct shapes could be conveniently produced by varying the concentration of KBr added into the growth solution. This work provides a general and facile method for the green synthesis of Pd nanocrystals with controlled shapes, especially for the preparation of Pd nanocrystals with sizes in the sub-10 nm regime.
authors: The Wallace H. Coulter Department of Biomedical Engineering, School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors: Cun
authors: C
authors: Zhu
authors: Jie
authors: J
authors: Zeng
authors: Ping
authors: P
authors: Lu
authors: Jingyue
authors: J
authors: Liu
authors: Zhongze
authors: Z
authors: Gu
authors: Younan
authors: Y
authors: Xia
mesh_terms: D001965:Bromides / Q000737:chemistry; D007477:Ions; D053758:Nanoparticles / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D012996:Solutions; D013696:Temperature
chemical_list: D001965:Bromides; D007477:Ions; D012996:Solutions; D010165:Palladium