Issue 71, 2016, Issue in Progress

Preparation of platinum nanoparticles immobilized on ordered mesoporous Co3O4–CeO2 composites and their enhanced catalytic activity

Abstract

Using mesoporous silica KIT-6 as a template, ordered mesoporous Co3O4–CeO2 composites with different contents of cobalt were prepared via the hard template method. Uniform Pt nanoparticles stabilized by polyamidoamine (PAMAM) dendrimers were immobilized on different Co3O4–CeO2 composites, resulting in Pt-based supported catalysts. The prepared materials were characterized by several techniques such as transmission electron microscopy (TEM), nitrogen physical adsorption, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and energy dispersion X-ray analysis (EDX). The results showed that the Co3O4–CeO2 composites have a regular pore structure and high crystallinity. Moreover, the specific surface area of Co3O4–CeO2 reached 135.04 m2 g−1 for 10 mol% of cobalt (Co/(Co + Ce)). The introduction of cobalt could improve the structure of the supports and enhance the catalytic efficiency for the prepared Pt-based supported catalysts. The catalytic performances were evaluated by the reduction of 4-nitrophenol as monitored by UV-Vis spectra. In a comparison of the catalysts with different cobalt contents, it was found that Pt/meso-CeO2Co10 possessed the highest catalytic performance as well as good reusability.

Graphical abstract: Preparation of platinum nanoparticles immobilized on ordered mesoporous Co3O4–CeO2 composites and their enhanced catalytic activity

Supplementary files

Article information

Article type
Paper
Submitted
05 Apr 2016
Accepted
26 Jun 2016
First published
29 Jun 2016

RSC Adv., 2016,6, 67173-67183

Preparation of platinum nanoparticles immobilized on ordered mesoporous Co3O4–CeO2 composites and their enhanced catalytic activity

Q. Wang, Y. Zhang, Y. Zhou, Z. Zhang, Y. Xu, C. Zhang, H. Zhang and X. Sheng, RSC Adv., 2016, 6, 67173 DOI: 10.1039/C6RA08784A

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.

Social activity

Spotlight

Advertisements