C12A7-O-纳米材料的制备及抗菌活性

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (10): 1919.

C12A7-O^-纳米材料的制备及抗菌活性

宫璐, 沈静, 李全新

中国科学技术大学化学物理系, 合肥 230026

收稿日期:2010-04-01 出版日期:2010-10-10 发布日期:2010-10-10
通讯作者: 李全新, 男, 教授, 博士生导师, 主要从事物理化学、材料和能源化工交叉学科的研究. E-mail: liqx@ustc.edu.cn
基金资助:
国家“八六三”计划项目(批准号: 2009AA05Z435)、国家“九七三” 计划项目(批准号: 2007CB210206)和国家自然科学基金(批准号: 50772107)资助.

Preparation and Bactericidal Activity of C12A7-O- Nanoparticles

GONG Lu, SHEN Jing, LI Quan-Xin*

Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China

Received:2010-04-01 Online:2010-10-10 Published:2010-10-10
Contact: LI Quan-Xin. E-mail: liqx@ustc.edu.cn
Supported by:
国家“八六三”计划项目(批准号: 2009AA05Z435)、国家“九七三” 计划项目(批准号: 2007CB210206)和国家自然科学基金(批准号: 50772107)资助.

摘要/Abstract

摘要： 利用溶胶-凝胶法制备了C12A7-O-{[Ca24Al28O64]4+·4(O-)}纳米材料. 采用X射线衍射、电子顺磁共振及透射电子显微镜等手段对制备的材料进行了表征. 结果表明, 在最佳焙烧条件(1150 ℃, 6 h)下制备的材料平均粒径为74 nm, 并具有晶胞参数为(1.199±0.004) nm的C12A7(Ca12Al14O33)笼状结构, 材料内包含浓度高达1.2×1020 cm-3的氧负离子(O-). 初步研究结果表明, 合成的C12A7-O-纳米材料具有良好的广谱抗菌作用.

关键词: C12A7-O-纳米材料, 溶胶-凝胶法, 抗菌性能

Abstract: C12A7-O-{[Ca24Al28O64]4+·4(O-)} nanoparticles were prepared by sol-gel method. The synthesized C12A7-O- nonaparticles were investigated by X-ray diffraction, electron spin resonance and transmission electron microscopy. The antibacterial test of the C12A7-O- nonaparticles was also performed against E. coli(DH5α), S. aureus(ATCC 6538) and B. subtilis(ATCC 9372). The results show that the best condition for preparing C12A7-O- nanoparticles was sintering at 1150 ℃ for 6 h in oxygen ambience. The mean particle size of the C12A7-O- nanoparticles was 74 nm, and the cell parameter of the C12A7(Ca12Al14O33)cage with a O-concentration of 1.2×1020 cm-3 was (1.199±0.004) nm. The C12A7-O- nanoparticles also exhibited excellent broad-spectrum antibacterial activity. The unique features of present material such as thermal stability, environment-friendly property and safety, could be potentially utilized in antibacterial materials.

Key words: C12A7-O- nanoparticle, Sol-gel method, Bactericidal activity

TrendMD:

宫璐, 沈静, 李全新. C12A7-O^-纳米材料的制备及抗菌活性. 高等学校化学学报, 2010, 31(10): 1919.

GONG Lu, SHEN Jing, LI Quan-Xin*. Preparation and Bactericidal Activity of C12A7-O- Nanoparticles. Chem. J. Chinese Universities, 2010, 31(10): 1919.

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