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Catalysts 2017, 7(9), 266; doi:10.3390/catal7090266

Flower-Like Au–CuO/Bi2WO6 Microsphere Catalysts: Synthesis, Characterization, and Their Catalytic Performances for CO Oxidation

1
College of Chemistry, Nankai University, Tianjin 300071, China
2
The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China
3
Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
*
Author to whom correspondence should be addressed.
Received: 15 August 2017 / Revised: 30 August 2017 / Accepted: 5 September 2017 / Published: 11 September 2017
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Abstract

The flower-like Bi2WO6 microsphere was synthesized through a simple hydrothermal route, and three catalysts, Au/Bi2WO6, CuO/Bi2WO6, and Au–CuO/Bi2WO6, were prepared by a deposition–precipitation method. The morphology and structure of the catalysts were characterized by X-ray powder diffraction, surface area analyzer, inductively coupled plasma optical emission spectrometer, scanning electron microscope, transmission electron microscopy, UV/Vis spectrometer, as well as X-ray photoelectron spectroscopy. Their catalytic performances in catalytic CO oxidation were evaluated. For Au/Bi2WO6 and CuO/Bi2WO6, Au and CuO nanoparticles highly dispersed on Bi2WO6 are 3 and 10 nm, respectively, in average size. For Au–CuO/Bi2WO6, a part of the Au nanoparticles (Au NPs) strongly adheres to the CuO, due to the strong interaction between Au NPs and CuO, which has a positive effect on catalytic activity of Au–CuO/Bi2WO6. Au–CuO/Bi2WO6 can convert CO into CO2 completely at 40 °C, as the contents of Au and Cu are 0.438 wt % and 4.85 wt %, respectively. View Full-Text
Keywords: Bi2WO6; Au; CuO; CO oxidation; flower-like microsphere Bi2WO6; Au; CuO; CO oxidation; flower-like microsphere
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, L.; Zhu, B.; Zhang, S.; Huang, W. Flower-Like Au–CuO/Bi2WO6 Microsphere Catalysts: Synthesis, Characterization, and Their Catalytic Performances for CO Oxidation. Catalysts 2017, 7, 266.

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