以水热法合成的炭微球为原料,经KOH活化制备了活性炭微球,通过在氯化铜溶液中浸渍使铜吸附在活性炭微球上.得到载铜活性炭微球.采用XRD、SEM、TEM、EDS、XPS和N_2吸脱附对载铜前后活性炭微球的结构和形貌进行了表征,并测试了其抗菌活性.研究表明,活性炭微球表面负载的铜是以离子形式存在,并且随着溶液中铜离子浓度的增加,载铜量增大,氨水的加入可明显提高铜的负载量.抗菌结果显示,载铜活性炭微球对大肠杆菌(E. coli)和金黄色葡萄球菌(S.aureus)具有良好的杀灭能力.因此,它作为一种抗菌材料有望在水处理、气体过滤和微生物污染等方面获得应用.
Carbon microspheres (CMs) were prepared via a hydrothermal method, and then activated with KOH to form activated carbon microspheres (ACMs). Copper-loaded activated carbon microspheres (Cu-ACMs) were obtained by the direct immersion in CuCl_2aqueous solution. The structure and morphology of ACMs and Cu-ACMs were characterized by XRD, SEM, TEM, EDS, XPS and N_2 adsorption-desorption iso-therms. The experimental results show that the copper valence state of Cu-ACMs samples is Cu~(2+) ion, and the amount of absorbed copper increases with the increase of copper ion concentration in solution. The addi-tion of ammonia can significantly improve the amount of absorbed copper. The antibacterial activities of as-prepared materials measured indicate that the Cu-ACMs have the good activities to kill E. coli and S. aureus.Therefore, Cu-ACMs is a potential candidate as the antibacterial materials in some applications, such as wa-ter treatment, gas filtration and microbial contamination, etc.
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