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Noble Metal-Free Ceria-Zirconia Solid Solutions Templated by Tobacco Materials for Catalytic Oxidation of CO

Research & Technology Center of Yunnan Industrial of China Tobacco Industry CO., Ltd., Kunming 650231, China
Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities’ Center for Photocatalytic Treatment of Pollutants in Yunnan Province, School of Energy, School of Chemical Sciences & Technology, Yunnan University, Kunming 650091, China
Authors to whom correspondence should be addressed.
Academic Editors: Enrique Rodríguez-Castellón, Agustín Bueno-López and Elisa Moretti
Catalysts 2016, 6(9), 135;
Received: 21 July 2016 / Revised: 7 September 2016 / Accepted: 7 September 2016 / Published: 9 September 2016
(This article belongs to the Special Issue Ceria-based Catalysts)
PDF [8824 KB, uploaded 9 September 2016]


A series of ceria-zirconia solid solutions were synthesized using tobacco leaves, stems and stem-silks as biotemplates. A combination of physicochemical techniques such as powder X-ray diffraction (XRD), N2 adsorption/desorption measurement, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to characterize the as-synthesized samples. The results show that the morphologies of the templates were well replicated in the obtained ceria-zirconia solid solutions. Catalytic oxidation activities of CO over the ceria-zirconia solid solutions were then investigated. The catalyst templated by tobacco stem-silk exhibited higher conversion of CO at lower temperature than that of ceria-zirconia solid solutions templated by tobacco leaves and stems or without templates due to its special morphology. The catalyst even showed similar CO conversion when compared to ceria-zirconia solid solutions doped with 1.0 wt % noble metals such as Pt, Ag and Au. The results highlighted the advantages of using tobacco as biotemplate. View Full-Text
Keywords: ceria-zirconia solid solutions; catalytic oxidation; CO; tobacco biotemplates ceria-zirconia solid solutions; catalytic oxidation; CO; tobacco biotemplates

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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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Zhu, D.; Duan, D.; Han, Y.; He, J.; He, Y.; Chen, Y.; Zhang, W.; Yan, Z.; Wang, J.; Yuan, F. Noble Metal-Free Ceria-Zirconia Solid Solutions Templated by Tobacco Materials for Catalytic Oxidation of CO. Catalysts 2016, 6, 135.

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