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

纺织学报 ›› 2016, Vol. 37 ›› Issue (10): 89-93.

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

收稿日期:2015-09-14 修回日期:2016-05-31 出版日期:2016-10-15 发布日期:2016-10-31

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

Received:2015-09-14 Revised:2016-05-31 Online:2016-10-15 Published:2016-10-31

摘要/Abstract

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。

关键词: 碳纳米管, 铁氧化物, 吸附, 甲基橙

Abstract:

The adsorption features of multi-walled carbon nanotubes (CNTs) and the magnetic properties of iron oxide were combined to produce magnetic absorbents. 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 absorption capacity of the composite adsorbents for methyl orange in wastewater was greatly improved, comparde than CNTs.

Key words: multi-walled carbon nanotube, iron oxide, adsorption, methylorange

陈一萍潘吉特. 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[J]. 纺织学报, 2016, 37(10): 89-93.

参考文献

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