Aqueous-phase synthesis of single-crystal pd seeds 3 nm in diameter and their use for the growth of pd nanocrystals with different shapes

Cun Zhu, Jie Zeng, Ping Lu, Jingyue Liu, Zhongze Gu, Younan Xia

Research output: Contribution to journalArticle

27 Scopus citations

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 Pd2+ 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.

Original languageEnglish (US)
Pages (from-to)5127-5133
Number of pages7
JournalChemistry - A European Journal
Volume19
Issue number16
DOIs
StatePublished - Apr 15 2013

Keywords

  • Bromide
  • Kinetics
  • Palladium
  • Reduction
  • Seed-mediated growth

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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