A continuous etching process for highly-active Pd nanoclusters and their in situ stabilization

Ai-Zhi Zhong, Wei Zou, Wen-Xin Mao, Rong-Wen Lu, An-Min Cao, Li-Jun Wan

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3 Citations (Scopus)

Abstract

We report a simple and environmentally-benign method for the synthesis of Pd nanoclusters through a continuous etching process. With the help of l-methionine, newly-formed Pd nanoparticles (larger than 50 nm) will gradually reduce their size, finally resulting in the formation of tiny nanoclusters with a diameter around 1.4 nm. A following sol-gel process can encapsulate these highly-active nanoclusters into a silica matrix. In this way, Pd nanoclusters can be stabilized and can sustain a high temperature treatment up to 600 °C. Moreover, these Pd nanoclusters are proved to be promising for a catalytic Suzuki reaction. Due to the composite structure of nanoclusters and silica, the Pd@SiO2 catalysts show integrated merits including good catalytic activity, high stability and notable cyclability.

Original languageEnglish
Pages (from-to)23637-23641
Number of pages5
JournalRSC Advances
Volume4
Issue number45
DOIs
Publication statusPublished - 2014
Externally publishedYes

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