[1]梁耀东,王 庆,贺拥军,等.Fe3O4/活性炭磁性材料的合成及其对茜素红染料的吸附性能[J].西安科技大学学报,2019,(01):130-136.[doi:10.13800/j.cnki.xakjdxxb.2019.0119 ]
 LIANG Yao-dong,WANG Qing,HE Yong-jun,et al.Synthesis of Fe3O4/activated carbon magnetic material and its adsorption property of alizarin red dye[J].Journal of Xi'an University of Science and Technology,2019,(01):130-136.[doi:10.13800/j.cnki.xakjdxxb.2019.0119 ]
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Fe3O4/活性炭磁性材料的合成及其对茜素红染料的吸附性能(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2019年01期
页码:
130-136
栏目:
出版日期:
2019-02-28

文章信息/Info

Title:
Synthesis of Fe3O4/activated carbon magnetic material and its adsorption property of alizarin red dye
文章编号:
1672-9315(2019)01-0130-08
作者:
梁耀东王 庆贺拥军陈创前雷丽华
(西安科技大学 化学与化工学院,陕西 西安 710054)
Author(s):
LIANG Yao-dongWANG QingHE Yong-junCHEN Chuang-qianLEI Li-hua
(College of Chemistry and Chemical Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)
关键词:
活性炭 Fe3O4 茜素红 吸附
Keywords:
activated carbon Fe3O4 alizarin red adsorption
分类号:
G 642
DOI:
10.13800/j.cnki.xakjdxxb.2019.0119
文献标志码:
A
摘要:
以氢氧化钠水热法预处理的活性炭(AC)为原料,采用溶剂热法合成Fe3O4/AC磁性材料,通过振动样品磁强计、X射线衍射、红外光谱、比表面积及孔径分析等分析方法对所合成的磁性材料进行表征,试验着重研究了其作为吸附剂对茜素红(AR)的吸附性能。结果表明,温度、pH值和Fe3O4/AC用量对吸附效果有一定影响。在最佳吸附条件下,Fe3O4/AC对茜素红的去除率可达96%以上。等温吸附数据同时符合Langmuir和Freundlich模型,最大吸附量为344 mg·g-1.Fe3O4/AC对茜素红具有很好吸附性能的原因是由于Fe3O4/AC和茜素红之间存在较强的氢键和π-π相互作用。吸附过程是自发进行的吸热过程,符合假二级动力学模型,速率控制步骤为颗粒内扩散,再生6次后的Fe3O4/AC复合材料对茜素红的去除率达到65%.
Abstract:
Fe3O4/activated carbon(AC)magnetic materials were synthesized via solvothermal method by using sodium hydroxide hydro-thermal treated AC as raw material.The obtained composite was characterized by vibrating sample magnetometer,X-ray diffraction,Fourier transform infrared spectroscopy and Brunauer-Emmett-Teller surface area methods.The adsorption property of alizarin red(AR)by Fe3O4/AC was emphatically investigated.The results showed that the removal efficiency of AR was affected by temperature,pH and Fe3O4/AC dosage.Under the optimum adsorption conditions,the removal efficiency of AR can be achieved above 96%.The equilibrium adsorption data fitted well to Langmuir and Freundlich models,and the maximum adsorption capacity was found to be 344 mg·g-1.The remarkable adsorption capacity of AR onto Fe3O4/AC composite can be attributed to stronger hydrogen bonds and π-π interactions between AR and Fe3O4/AC.The adsorption of AR is a spontaneous and endothermic process,and fitted well to the second order kinetic model which was controlled by intraparticle diffusion procedure.The removal efficiency of AR by Fe3O4/AC after being regenerated six times can reach 65%.

参考文献/References:


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备注/Memo

备注/Memo:
收稿日期:2018-07-21 责任编辑:高 佳
基金项目:国家自然科学基金(50572088); 西安科技大学大学生创新创业训练计划项目(201810704163)
通信作者:梁耀东(1967-),男,江苏镇江人,副教授,E-mail:liangyd@xust.edu.cn
更新日期/Last Update: 2019-02-28