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Construction of Mesoporous Ce0.5Zr0.5O2 from Different Gemini and Cetyltrimethylammonium Bromide Surfactants

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This paper reports the preparation of mesoporous Ce0.5Zr0.5O2 solid solutions (M-CZ) using three Gemini surfactants and CTAB as the co-templates. Ordered mesoporous CZ co-templated by CTAB and G2 were prepared in a carefully controlled experiment. Samples were characterized by X-ray diffraction (XRD), high resolution transmission electronic microscopy (HRTEM), N2 adsorption–desorption isotherms, temperature-programmed H2 reduction (TPR), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). Based on the N2-isotherm results, the relationship between preparation parameters and pore structures are discussed. It was found that several synthetic parameters, such as the types of and ratios of surfactant, the existence of a co-template, hydrothermal treatment duration time, as well as thermal treatment temperatures obviously affected pore structures and properties of the products. The maximum specific surface area obtained was 179 m2 · g–1. A mechanism was proposed to explain the correlation between the surfactants and inorganic species. Meso-pores within crystalline frameworks were found to be composed of intra-particle spaces, and the pore sizes obviously correlated with the length of the hydrocarbon chains. H2-TPR curve of the sample templated by CTAB showed a reduction peak at 708 °C, while samples co-templated by Gemini plus CTAB showed obvious decreases in reduction temperatures.
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Keywords: CEO2–ZRO2; GEMINI SURFACTANT; MESOPOROUS MATERIALS; SURFACE PROPERTIES

Document Type: Research Article

Publication date: February 1, 2015

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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