Preparation and characterization of antibacterial silver-dispersed activated carbon aerogels

• Published in: Carbon (New York) Vol. 42; no. 15; pp. 3209 - 3216
• Main Authors: Zhang, Shuting, Fu, Ruowen, Wu, Dingcai, Xu, Wei, Ye, Qiwei, Chen, Zhangliu
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2004; Elsevier Science
• 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; C. BET surface area; B. Activation; A. Carbon aerogel; Germicides; Aerogels; Characterization; Silver; Porous materials; Transition elements; Activated carbon; Preparation
• ISSN: 0008-6223; 1873-3891
• DOI: 10.1016/j.carbon.2004.08.004

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.