Issue 39, 2018, Issue in Progress

The influence of CePO4 nanorods on the CO oxidation activity of Au/GdPO4-rods

Abstract

In this work, Au/GdPO4-rods were found to be good catalysts for CO oxidation with a low content of Au. The dopant of CePO4 could influence the activity of Au/GdPO4 due to the synergistic effect. GdPO4 and CePO4 nanorods were obtained by a hydrothermal process and the Au/GdPO4-rod and Au/Ce-GdPO4-rod catalysts were prepared by deposition–precipitation synthesis. The samples were extensively characterized by transmission electron microscopy (TEM), inductively coupled plasma (ICP), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FT-IR), temperature programmed desorption (O2-TPD, CO-TPD, and CO2-TPD) and N2 adsorption–desorption. The results showed that Au/GdPO4 with a low Au content possessed good activity for CO oxidation. When the content of Ce is 25 at%, 0.5% Au/Ce-GdPO4-rods can convert CO completely at 65 °C, and the catalyst showed better high-temperature resistance than 0.5% Au/GdPO4-rods. 0.5% Au/Ce-GdPO4-rods also showed good stability at reaction temperatures of 55 and 65 °C with CO conversions of 90% and 100% after continuous operation for 12 h. They also showed no deactivation after 50 h at a relative high reaction temperature of 200 °C.

Graphical abstract: The influence of CePO4 nanorods on the CO oxidation activity of Au/GdPO4-rods

Supplementary files

Article information

Article type
Paper
Submitted
13 Mar 2018
Accepted
05 Jun 2018
First published
13 Jun 2018
This article is Open Access
Creative Commons BY license

RSC Adv., 2018,8, 21699-21711

The influence of CePO4 nanorods on the CO oxidation activity of Au/GdPO4-rods

Y. Huanhuan, C. Fayun, Zhubaolin, H. Weiping and Z. Shoumin, RSC Adv., 2018, 8, 21699 DOI: 10.1039/C8RA02206B

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