用玫瑰茎制备多孔炭及其水溶液中对铬(Ⅵ)的吸附研究  

Porous carbons prepared by rose stem and their application for Cr(Ⅵ)adsorption from aqueous solution

作　　者：陈敬梓 黄璧成 黄雅钦[2] 

机构地区：[1]北京市京源学校,北京100040 [2]北京化工大学材料科学与工程学院,北京100029

出　　处：《分析试验室》2017年第2期207-211,共5页Chinese Journal of Analysis Laboratory

摘　　要：以玫瑰茎为原料,制备了多孔炭材料,并将其应用于含Cr(VI)的污染水净化。研究结果表明,用玫瑰茎制备的炭材料具有多孔结构,且具有较高的比表面积。应用EDS分析和傅立叶红外光谱分析进一步证明了该炭材料具有含氧官能团活性位点,是一种潜在的吸附材料。将其应用于含Cr(VI)污染水净化研究结果表明,净化过程符合准二级动力学,最大吸附量可达344.83 mg/g,明显高于市售污水净化用炭材料Norit CGP(最大吸附量305.81 mg/g)。这种炭材料有望成为性能优异的含Cr(VI)污水的净化剂。Hexavalent chromium（Cr（Ⅵ））,owing to its high toxicity and carcinogenicity,becomes a harmful pollutant in water system.Therefore,it is attracting extensive concern to treat Cr（Ⅵ）-containing water.The rose-stem-based porous carbon has been successfully prepared and used as good Cr（Ⅵ）sorbent in aqueous solution.It has been reported that this as-synthesized carbon possesses porous structure and high specific surface area.The results of EDS analysis and FTIR spectra further demonstrated that the rose-stem-based porous carbon has the oxygen-containing functional groups,which makes the carbon a potential adsorption material.The rose-stem-based porous carbon shows faster purification rate in Cr（Ⅵ） adsorption.The adsorption behavior can be described by pseudo-second order kinetic.The Langmuir maximum adsorption reached to 344.83 mg/g,which is clearly more efficient than that of the current commercially available carbon materials Norit CGP（305.81 mg/g）.

关 键 词：玫瑰茎 多孔炭 吸附 铬(Ⅵ) 

分 类 号：X830.2[环境科学与工程—环境工程]