Issue 18, 2011

A new strategy for finely controlling the metal (oxide) coating on colloidal particles with tunable catalytic properties

Abstract

In this contribution, we present an efficient, versatile and green strategy for finely controlling the metal (oxide) coating on core particles through in situ reaction of precursors in CO2 expanded ethanol without using any precipitants. It not only avoids the formation of free metal (oxide) and/or naked cores, but also permits individual dispersion of all the resultant particles without aggregation. With this method, the composition, thickness, uniformity, and structure of the metal (oxide) shell could be precisely controlled. A wide variety of unreported high-quality core-shell particles with a shell consisting of highly dispersed metal (oxide) nanocrystals or nanoalloys, such as C@Ni, CoO/C, C@Ni&Co and C@Ni&Pd particles have been fabricated, and the properties of the resultant particles were precisely tailored, such as the promising catalytic performance obtained over Ni/C and C@Ni particles in the hydrogenation of nitrobenzene. The present coating strategy is more simple and precisely controllable compared to the conventional deposition method and it is suitable for most precursors and even for multi-component materials, enabling the fabrication of nanostructured materials more easily and precisely.

Graphical abstract: A new strategy for finely controlling the metal (oxide) coating on colloidal particles with tunable catalytic properties

Supplementary files

Article information

Article type
Paper
Submitted
20 Dec 2010
Accepted
24 Feb 2011
First published
26 Mar 2011

J. Mater. Chem., 2011,21, 6654-6659

A new strategy for finely controlling the metal (oxide) coating on colloidal particles with tunable catalytic properties

J. Ming, H. Cheng, Y. Yu, Y. Wu and F. Zhao, J. Mater. Chem., 2011, 21, 6654 DOI: 10.1039/C0JM04456C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements