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Synthesis of MgO-Modified mesoporous silica and its adsorption performance toward CO2

  • Material Science
  • Published:
Wuhan University Journal of Natural Sciences

Abstract

The mesoporous silica modified with magnesium oxide (MgO) was synthesized by one step method and impregnating method, respectively. The samples were characterized by small angle X-Ray diffraction (XRD), N2 adsorption-desorption and transmission electron microscopy (TEM), and the carbon dioxide adsorption capacity was analyzed by thermal gravimetric analysis (TGA). Compared with the original mesoporous silica (20.7 mg/g), the CO2 adsorption capacity of MgO-modified mesoporous silica processed by one step method increases to 32.9 mg/g. Although its surface area greatly decreases compared with that of the original mesoporous silica, the MgO-modified mesoporous silica prepared by impregnating reaches an adsorptive value of 31.1 mg/g because the number of basic sites increases on the surface of the mesoporous silica.

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Authors and Affiliations

  1. Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education/School of Physics and Technology, Wuhan University, Wuhan, 430072, Hubei, China

    Qiming Liu & Yuan Zhou

  2. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, Hubei, China

    Juanjuan Ma

  3. GuoDian Science and Technology Research Institute, Nanjing, 210031, Jiangsu, China

    Yuan Zhou & Tianhe Wang

Authors
  1. Qiming Liu
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  2. Juanjuan Ma
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  3. Yuan Zhou
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  4. Tianhe Wang
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Correspondence to Qiming Liu.

Additional information

Foundation item: Supported by the National Natural Science Foundation of China (51272183), the Program for Discipline Leader in Wuhan (201051730563), and the self-determined and innovative research funds of Wuhan University

Biography: LIU Qiming, male, Professor, Ph. D., research direction: optoelectronic functional materials, glasses and amorphous materials, porous functional materials.

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Liu, Q., Ma, J., Zhou, Y. et al. Synthesis of MgO-Modified mesoporous silica and its adsorption performance toward CO2 . Wuhan Univ. J. Nat. Sci. 19, 111–116 (2014). https://doi.org/10.1007/s11859-014-0986-4

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  • DOI: https://doi.org/10.1007/s11859-014-0986-4

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