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芬顿试剂法制备磁性碳纳米管及其对亚甲基蓝的吸附性能

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周露, 陈君红, 于飞, 袁志文, 马杰. 芬顿试剂法制备磁性碳纳米管及其对亚甲基蓝的吸附性能[J]. 环境化学, 2012, 31(5): 669-676.
引用本文: 周露, 陈君红, 于飞, 袁志文, 马杰. 芬顿试剂法制备磁性碳纳米管及其对亚甲基蓝的吸附性能[J]. 环境化学, 2012, 31(5): 669-676.
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ZHOU Lu, CHEN Junhong, YU Fei, YUAN Zhiwen, MA Jie. Adsorption of methylene blue on magnetic multiwalled carbon nanotube synthesized by Fenton reaction[J]. Environmental Chemistry, 2012, 31(5): 669-676.
Citation: ZHOU Lu, CHEN Junhong, YU Fei, YUAN Zhiwen, MA Jie. Adsorption of methylene blue on magnetic multiwalled carbon nanotube synthesized by Fenton reaction[J]. Environmental Chemistry, 2012, 31(5): 669-676.
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芬顿试剂法制备磁性碳纳米管及其对亚甲基蓝的吸附性能

  • 1.

    同济大学污染控制与资源化研究国家重点实验室, 上海, 200092;

  • 2.

    上海交通大学环境科学与工程学院, 上海, 200240

  • 基金项目:

    国家自然科学基金(21177095)

    高等学校博士学科点专项科研基金(20100072110033)

    同济大学青年优秀人才培养行动计划(2010KJ026)资助.

Adsorption of methylene blue on magnetic multiwalled carbon nanotube synthesized by Fenton reaction

  • 1.

    State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China;

  • 2.

    School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

  • Fund Project:

  • 摘要: 采用芬顿试剂法在碳纳米管纯化样品表面负载纳米磁性氧化铁颗粒,制备磁性碳纳米管杂化材料(MWCNTs/Fe2O3),该杂化材料具有较高的纳米氧化铁负载率(>50%)和优异的磁性能,制备过程中无需额外添加阳离子,不会对环境造成不利影响.将磁性碳纳米管杂化材料应用于染料废水处理中,结果发现MWCNTs/Fe2O3对亚甲基蓝染料吸附性能较好,吸附后用磁铁易于达到固液分离的效果.吸附性能研究表明,磁性碳纳米管对水溶液中亚甲基蓝的吸附在40 min内吸附容量迅速上升,其值达到最大平衡吸附容量的88%以上,60 min基本达到平衡,吸附过程符合准二级动力学模型(R2>0.999).磁性碳纳米管吸附亚甲基蓝的平衡吸附量qe与亚甲基蓝溶液的平衡浓度Ce的关系满足Langmuir(R2>0.999)、Freundlich(R2>0.97)以及Dubinin-Radushkevich(D-R) (R2>0.96)等温吸附模型.通过Langmuir模型计算可知磁性碳纳米管对亚甲基蓝的最大吸附容量为69.98 mg·g-1,吸附过程为有利吸附,由D-R模型计算结果可以推断MWCNTs/Fe2O3对水溶液中亚甲基蓝的吸附机制以化学吸附为主.
    Abstract: In this paper, novel magnetic carbon nanotubes/iron oxide hybrids (MWCNTs/Fe2O3) were synthesized by Fenton reaction without the need of additional cations. The novel magnetic MWCNTs/Fe2O3 hybrid was used to remove methylene blue (MB) from aqueous solutions. Experimental results indicated that the MWCNTs/Fe2O3 hybrid has good adsorption capacity (qe) for MB, and the adsorbent was easily separated from aqueous solution after adsorption due to its magnetic properties. The adsorption of MB reached equilibrium within 40 minutes. The regression results showed that the adsorption kinetics were more accurately represented by pseudo second-order model (R2>0.999). The equilibrium adsorption data were analyzed using three widely applied isotherms: Langmuir, Freundlich and Dubinin-Radushkevich (D-R). The results suggested that all isotherm models can fit the experimental data reasonably well. Based on the Langmuir model, the maximum adsorption capacity of MWCNTs/Fe2O3 was 69.98 mg穏-1, and the adsorption process was favored. The adsorption of MB on the novel magnetic MWCNTs/Fe2O3 hybrids was mainly attributed to the chemical adsorption based on the D-R model.
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  • [1] Gang M, Jain N. Waste gypsum from intermediate dye industries for production of building materials[J]. Constr Build Mater, 2010, 24(9):1632-1637
    [2] Mathur N, Bhatnagar P, Nagar P, et al. Mutagenicity assessment of effluents from textile/dye industries of Sanganer, Jaipur (India):a case study[J]. Ecotox Environ Safe, 2005, 61(1): 105-113
    [3] Banat I M, Nigam P, Singh D, et al. Microbial decolorization of textile-dye-containing effluents: A review[J]. Bioresource Technol, 1996, 58:217-227
    [4] Mittal A, Mittal J, Kurup L. Adsorption isotherms, kinetics and column operations for the removal of hazardous dye, Tartrazine from aqueous solutions using waste materials-Bottom Ash and De-Oiled Soya, as adsorbents [J]. J Hazard Mater, 2006, 136: 567-578
    [5] Ali N, Hameed A, Ahme S, et al. Decolorization of structurally different textile dyes by Aspergillus niger SA1 [J]. W J Microbiology and Biotechnology, 2008,24:1067-1072
    [6] Wong Y C, Szeto Y S, Cheungw H, et al. Effect of temperature, particle size and percentage deacetylation on the adsorption of acid dyes on chitosan [J]. Adsorption, 2008, 1(14):11-20
    [7] Kornaros M, Lyberatos G. Biological treatment of wastewaters from a dye manufacturing company using a trickling filter[J]. J Hazard Mater, 2006, 136 (1):95-102
    [8] Lajeunesse A, Gagnon C, Gagne F, et al. Distribution of antidepressants and their metabolites in brook trout exposed to municipal wastewaters before and after ozone treatment-Evidence of biological effects[J]. Chemosphere, 2011, 83(4):564-571
    [9] Gonzalez-Olmos R, Holzer F, Kopinke F D, et al. Indications of the reactive species in a heterogeneous Fenton-like reaction using Fe-containing zeolites[J]. Appl Catal a-Gen, 2011, 398 (1/2): 44-53
    [10] Capar G, Yetis U, Yilmaz L. Membrane based strategies for the pre-treatment of acid dye bath wastewaters[J]. J Hazard Mater, 2006, 135 (1/3): 423-430
    [11] Ku Y, Wang L C, Ma C M, et al. Photocatalytic oxidation of Reactive Red 22 in aqueous solution using La2Ti2O7 photocatalyst[J]. Water Air Soil Poll, 2011, 215: 97-103
    [12] Karim A B, Mounir B, Hachkar M, et al. Removal of Basic Red 46 dye from aqueous solution by adsorption onto Moroccan clay[J]. J Hazard Mater, 2009, 168 (1):304-309
    [13] Wu C H. Adsorption of reactive dye onto carbon nanotubes:Equilibrium, kinetics and thermodynamics[J]. Journal of Hazardous Materials,2007, 144: 93-100
    [14] Long R Q, Yang R T. Carbon nanotubes as superior sorbent for dioxin removal[J]. J Am Chem Soc, 2001, 123: 2058-2059
    [15] Fraczek-Szczypta A, Menaszek E, Blazewicz S. Some observations on carbon nanotubes susceptibility to cell phagocytosis[J]. J Nanomater, 2011, doi: 10.1155/2011/473516
    [16] Ngomsik A F, Bee A, Draye M, et al. Magnetic nano- and microparticles for metal removal and environmental applications: a review[J]. Comptes Rendus Chimie, 2005, 8(6/7): 963-970
    [17] Li W W, Gao C, Qian H F, et al. Multiamino-functionalized carbon nanotubes and their applications in loading quantum dots and magnetic nanoparticles[J]. J Mater Chem, 2006, 16 (19): 1852-1859
    [18] Korneva G, Ye H H, Gogotsi Y, et al. Carbon nanotubes loaded with magnetic particles[J]. Nano Lett, 2005, 5 (5): 879-884
    [19] El-Gendy A A, Ibrahim E M M, Khavrus V O, et al. The synthesis of carbon coated Fe, Co and Ni nanoparticles and an examination of their magnetic properties[J]. Carbon, 2009, 47 (12):2821-2828
    [20] Dahl J A, Maddux B L S, Hutchison J E. Toward greener nanosynthesis[J]. Chem Rev, 2007, 107 (6): 2228-2269
    [21] Stratmann M, Rohwerder M.A pore view of corrosion [J]. Nature, 2001, 410: 420-422
    [22] Onyango M S, Kojima Y, Aoyi O, et al. Adsorption equilibrium modeling and solution chemistry dependence of fluoride removal from water by trivalent-cation-exchanged zeolite F-9[J]. J Colloid Interface Sci, 2004, 279(2): 341-350
    [23] Helfferich F, Ion Exchange[M]. New York: McGraw-Hill Book Co, 1962
    [24] Tahir S S, Rauf N. Removal of cationic dye from aqueous solutions by adsorption onto bentonite clay [J]. Chemosphere,2006, 63(11):1842-1848
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  • 收稿日期:  2011-09-21

芬顿试剂法制备磁性碳纳米管及其对亚甲基蓝的吸附性能

  • 1.  同济大学污染控制与资源化研究国家重点实验室, 上海, 200092;
  • 2.  上海交通大学环境科学与工程学院, 上海, 200240
  • 收稿日期:  2011-09-21
基金项目:

国家自然科学基金(21177095)

高等学校博士学科点专项科研基金(20100072110033)

同济大学青年优秀人才培养行动计划(2010KJ026)资助.

摘要: 采用芬顿试剂法在碳纳米管纯化样品表面负载纳米磁性氧化铁颗粒,制备磁性碳纳米管杂化材料(MWCNTs/Fe2O3),该杂化材料具有较高的纳米氧化铁负载率(>50%)和优异的磁性能,制备过程中无需额外添加阳离子,不会对环境造成不利影响.将磁性碳纳米管杂化材料应用于染料废水处理中,结果发现MWCNTs/Fe2O3对亚甲基蓝染料吸附性能较好,吸附后用磁铁易于达到固液分离的效果.吸附性能研究表明,磁性碳纳米管对水溶液中亚甲基蓝的吸附在40 min内吸附容量迅速上升,其值达到最大平衡吸附容量的88%以上,60 min基本达到平衡,吸附过程符合准二级动力学模型(R2>0.999).磁性碳纳米管吸附亚甲基蓝的平衡吸附量qe与亚甲基蓝溶液的平衡浓度Ce的关系满足Langmuir(R2>0.999)、Freundlich(R2>0.97)以及Dubinin-Radushkevich(D-R) (R2>0.96)等温吸附模型.通过Langmuir模型计算可知磁性碳纳米管对亚甲基蓝的最大吸附容量为69.98 mg·g-1,吸附过程为有利吸附,由D-R模型计算结果可以推断MWCNTs/Fe2O3对水溶液中亚甲基蓝的吸附机制以化学吸附为主.

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