Preparation and characterization of antibacterial silver-dispersed activated carbon aerogels

Silver-dispersed carbon aerogels (CAs) were obtained by direct immersion of organic aerogels prepared by ambient pressure drying technique in AgNO 3 aqueous solution and then carbonization. The effect of preparation conditions such as the resorcinol/catalyst ratio, the feed AgNO 3 concentration, the...

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Bibliographic Details
Published in:Carbon (New York) 2004, Vol.42 (15), p.3209-3216
Main Authors: Zhang, Shuting, Fu, Ruowen, Wu, Dingcai, Xu, Wei, Ye, Qiwei, Chen, Zhangliu
Format: Article
Language:English
Subjects:
A. Carbon aerogel
Adsorbents
B. Activation
C. BET surface area
Chemistry
Colloidal state and disperse state
Cross-disciplinary physics: materials science
rheology
Electron microscopy
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
General and physical chemistry
Materials science
Physics
Porous materials
Specific materials
Surface physical chemistry
X-ray diffraction
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Summary:Silver-dispersed carbon aerogels (CAs) were obtained by direct immersion of organic aerogels prepared by ambient pressure drying technique in AgNO 3 aqueous solution and then carbonization. The effect of preparation conditions such as the resorcinol/catalyst ratio, the feed AgNO 3 concentration, the ratio of aerogel mass/solution volume, immersion time and carbonization temperature on the bulk density and silver content as well as the BET surface area of the dispersed CAs was studied. The dispersion and structure of silver nanoparticles in obtained materials were investigated by means of scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The Ag-dispersed CAs prepared exhibit strong and long-term antibacterial activity.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2004.08.004