Controllable preparation of nano-MgO and investigation of its bactericidal properties

被引：321

作者：

Huang, L ^{[1
]}

Li, DQ ^{[1
]}

Lin, YJ ^{[1
]}

Wei, M ^{[1
]}

Evans, DG ^{[1
]}

Duan, X ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Minist Educ, Key Lab Sci & Technol Controllable Chem React, Beijing 100029, Peoples R China

来源：

JOURNAL OF INORGANIC BIOCHEMISTRY | 2005年 / 99卷 / 05期

基金：

中国国家自然科学基金;

关键词：

nano-MgO; Bacillus subtilis var. niger; Staphylococcus aureus; particle size; sterilization;

D O I：

10.1016/j.jinorgbio.2004.12.022

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 [生物化学与分子生物学]; 081704 [应用化学];

摘要：

Samples of nano-MgO with varying particle sizes were prepared by four different methods using Mg(NO3)(2) (.) 6H(2)O, Na2CO3, urea and ammonia as raw materials and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), low temperature N-2 adsorption-desorption measurements and FT-IR spectroscopy. Bactericidal experiments with Bacillus subtilis var. niger and Staphylococeus aureus were carried out using as-synthesized nano-MgO samples and the bactericidal mechanism was also investigated. The results showed that the bactericidal efficacy of nano-MgO increases with decreasing particle size. The bactericidal efficacy of the samples was compared with that of TiO2, a common photoactive bactericidal material. The nano-MgO has better bactericidal activity, both when used directly and as an additive in an interior wall paint. Furthermore, nano-MgO is active even in the absence of irradiation. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：986 / 993

页数：8

共 14 条

[1]

CATALYTIC SITES FOR ISOMERIZATION OF 1-BUTENE OVER MAGNESIUM-OXIDE [J].