碳纳米管/铁氧化物复合材料对模拟染料废水的吸附脱色效果  

Preparation of carbon nanotubes/iron oxide composite adsorbents for treatment of dye-containing wastewater

作　　者：陈一萍[1] 潘吉特 

机构地区：[1]泉州师范学院资源与环境学院,福建泉州362000

出　　处：《纺织学报》2016年第10期89-93,共5页Journal of Textile Research

基　　金：福建省高校服务海西建设重点项目(A102);泉州市科技局项目(2014Z118)

摘　　要：为获得具备优良吸附特性和磁分离性能的吸附材料,以碳纳米管(CNTs)、铁氧化物为原料制备CNTs/铁氧化物磁性复合材料。考察了复合材料吸附甲基橙的动力学、等温线及吸附剂用量的影响。实验结果表明,当吸附时间达到120 min和复合吸附材料的用量为0.2 g时,复合吸附材料对甲基橙的脱色效果达到最佳并具有良好的循环使用性能,且吸附过程更符合Langmuir等温吸附模型。利用扫描电子显微镜、傅里叶变换红外光谱和X射线衍射等分析手段对复合材料进行表征,测试结果显示,复合吸附材料与原始CNTs相比,表面官能团含量明显增加,这可能是其吸附能力显著提高的主要原因。The adsorption features of multi-walled carbon nanotubes（ CNTs） and the magnetic properties of iron oxide were combined to produce magnetic adsorbents. And the influence of kinetics,isotherm and absorbent dosage on the adsorption of methyl orange in wastewater by the composite adsorbents was discussed. The results showed that when the adsorption time was 120 min and the dosage of composite adsorbents was 0. 2 g,the removal efficiency of methyl orange could reach the maximum at the room temperature. and the composite adsorbents have a good recycling performance. The adsorption processes fit well to Langmuir isotherm model. The composite adsorbents were characterized and analyzed by SEM,FT-IR and XRD. The results indicated that owing to greatly-increased surface functional groups,the adsorption capacity of the composite adsorbents for methyl orange in wastewater was greatly improved,compared than CNTs.

关 键 词：碳纳米管 铁氧化物 吸附 甲基橙 

分 类 号：TS193[轻工技术与工程—纺织化学与染整工程]