Comparison between activated carbon, carbon xerogel and carbon nanotubes for the adsorption of the antibiotic ciprofloxacin

详细信息	查看全文 | 推荐本文 |

• 作者：S.A.C. Carabineiro^a ; ^{sonia.carabineiro@fe.up.pt} ; T. Thavorn-amornsri^a ; ^b ; M.F.R. Pereira^a ; P. Serp^c ; J.L. Figueiredo^a
• 关键词：Activated carbon ; Carbon xerogel ; Carbon nanotubes ; Ciprofloxacin ; Adsorption
• 刊名：Catalysis Today
• 出版年：2012
• 期刊代码：13_09205861
• 类别：ce
• 出版时间：1 June, 2012
• 卷：186
• 期：1
• 页码：29-34
• 文件大小：682 K

摘要

A comparison was made for the adsorption capacity of ciprofloxacin (CPX) on three types of carbon-based materials: activated carbon, carbon nanotubes and carbon xerogel. The obtained samples were characterised by adsorption of N₂ at 鈭?96 掳C, determination of the point of zero charge and by temperature programmed desorption. The Langmuir and Freundlich models were used to describe the equilibrium isotherms obtained. Adsorption capacities ranging from approximately 112 to 231 mg_CPX g_C^鈭? were obtained (for carbon xerogel and activated carbon, respectively). The influence of the textural and surface properties of the carbon materials on the CPX adsorption was discussed and it was shown that the carbon nanotubes sample presents the best performance per unit surface area.