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Preparation and bactericidal property of MgO nanoparticles on γ-Al2O3

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Abstract

After being impregnated in the solution containing Mg(NO3)2·6H2O, γ-Al2O3 was dried and calcined at 500°C which results in the production of a bactericide, highly dispersed MgO loaded on the surface of γ-Al2O3. The threshold value of the monolayer dispersion of MgO on γ-Al2O3 is 14.97%, and MgO crystal formed when the load amount beyond this value. The samples with different load amount were characterized by X-ray Diffraction (XRD), Low-temperature N2 adsorption-desorption, Inductively Coupled Plasma (ICP) and High Resolution Scan Electronic Microscope (SEM). The results showed that these MgO microcrystals are highly dispersed and have regular size in the range of 4 to 10.8 nm. The specific surface, pore volume and pore size of the sample decreases with the increase of load amount. It is demonstrated that γ-Al2O3 with highly dispersed MgO on the surface is efficient bactericide, and the one with 20% load amount of MgO can kill more than 99% bacteria and spore cells.

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Authors and Affiliations

  1. Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Education, Beijing University of Chemical Technology, Beijing, 100029, People’s Republic of China

    Yan-Jun LIN, Dian-Qing Li, Ge Wang, Lei Huang & Xue Duan

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  1. Yan-Jun LIN
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  2. Dian-Qing Li
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  3. Ge Wang
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  4. Lei Huang
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  5. Xue Duan
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Correspondence to Xue Duan.

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LIN, YJ., Li, DQ., Wang, G. et al. Preparation and bactericidal property of MgO nanoparticles on γ-Al2O3. J Mater Sci: Mater Med 16, 53–56 (2005). https://doi.org/10.1007/s10856-005-6446-0

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  • DOI: https://doi.org/10.1007/s10856-005-6446-0

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