Silver Supported on White Carbon Black Containing Rare Earths as Antibacterial Material
The antimicrobial effect of the Ag-White Carbon Black containing rare earth was investigated. Inorganic antibiotic materials consist of the antibacterial ion, the additive and the carrier. The sol-gel method was used to prepare the white carbon black carrier. Ag<+> was selected to be the antibacterial ion, and cerous nitrate was selected to be the additive. They were synthesized on the white carbon black carrier. The structures and properties of antibacterial material were characterized by inductively coupled plasma, particle size measurement instrument, fourier transform infrared and enumeration tests (Escherichia coli as experimental bacterium). Results showed that the amount of antibacterial ions and bacteriostasis rate of this new material are higher than those for the general Ag-antibacterial white carbon black (without containing rare earth). Ag<+> was bound to white carbon black by ion exchange process and adsorption process. Bacteriostasis rate is over 99％, and the particle size can be extended down to 7μm with a narrow size distribution. Other advantages of this material are good thermal and light stability. Furthermore, from the antibacterial experiment in rubber and the coating surface of metal, this new material showed promising results. The possible antibacterial mechanism was also proposed through all the experimental data in this study.
inorganic antibacterial material white carbon black antibacterial mechanism application rare earths
Tang Xiaoning(唐晓宁) Xie Gang(谢刚) Zhang Bin(张彬) Wang Xiaonan(王晓楠)
Faculty of Material and Metallurgy Engineering, Kunming University of Science and Technology, Kunmin Faculty of Science, Kunming University of Science and Technology, Kunming 650093, China General Chemical Coking Technology Center, Angang Steel Company Limited, Anshan 114021, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
97-103
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）