全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
环境化学  2015 

铅在锆化碳基磁性纳米复合材料上的吸附

Keywords: 碳基磁性材料

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用溶剂热法和沉淀沉积法成功制备锆化碳基磁性纳米复合材料,利用TEM、XRD、VSM和XRF手段对其结构特性进行表征,并研究其对水体中重金属Pb2+的吸附行为.表征结果表明,锆修饰的碳基磁性纳米材料是核壳球形结构,具有良好的超顺磁性,在外加磁场的作用下可实现快速分离.吸附实验结果表明,材料对Pb2+的吸附量随着锆负载量的提高而增多.Pb2+在材料上的吸附等温线符合Freundlich等温吸附模式,属于优惠型吸附;降低离子强度和增加pH均可提高材料对Pb2+的吸附作用.材料脱附再生6次之后仍具有良好的吸附效果.

References

[1]  Li Y H,Ding J,Luan Z K,et al. Competitive adsorption of Pb,Cu and Cd ions from aqueous solutions by multiwalled carbon nanotubes[J].Carbon,2003(41):2787-2792
[2]  李雅,汪葵,吴奇,等.零价铁修复铅污染水体的研究[J].电镀与环保,2014,34(3):47-49
[3]  Lam K F,Yeung K L,McKay G. Efficient approach for Cd2+ and Ni2+ removal and recovery using mesoporous adsorbent with tunable selectivity[J].Environmental Science & Technology,2007 (41):3329-3334
[4]  Heidari A,Younesi H,Mehraban Z. Removal of Ni(Ⅱ), Cd(Ⅱ), and Pb(Ⅱ) from a ternary aqueous solution by amino functionalized mesoporous and nano mesoporous silica[J].Chemical Engineering Journal,2009(153):70-79
[5]  Kadirvelu K, Namasivayam C. Activated carbon from coconut coirpith as metal adsorbent: Adsorption of Cd(Ⅱ) from aqueous solution[J].Advances in Environmental Research,2003(7):471-478
[6]  Kobya M,Demirbas E,Senturk E,et al. Adsorption of heavy metal ions from aqueous solutions by activated carbon prepared from apricot stone[J]. Bioresource Technology,2005 (96):1518-1521
[7]  Erdem E,Karapinar N,Donat R. The removal of heavy metal cations by natural zeolites[J].Journal of Colloid and Interface Science,2004, 280(2):309-314
[8]  Celis R,Hermosin M,Cornejo J. Heavy metal adsorption by functionalized clays[J]. Environmental Science & Technology,2000 (34):4593-4599
[9]  Cortina J,Miralles N. Kinetic studies on heavy metal ions removal by impregnated resins containing di-(2,4,4-trymethylpentyl) phosphinic acid[J]. Solvent Extraction and Ion Exchange,1997 (15):1067-1083
[10]  王家宏,常娥,丁绍兰,等.ZrO2负载碳纳米管吸附去除水中氟的研究[J].离子交换与吸附,2012,28(1):62-69
[11]  Hua M, Jiang Y N, Wu B. Fabrication of a new hydrous Zr(Ⅳ) oxide-based nanocomposite for enhanced Pb(Ⅱ) and Cd(Ⅱ) removal from waters[J]. Applied Materials & Interfaces,2013(5):12135-12142
[12]  张春荣,闫李霞,申大忠,等. Fe3O4/C纳米粒子的制备及其对水中罗丹明B的去除[J].环境化学,2012,31(11):1670-1674
[13]  张巧丽,陈旭,袁彪.磁性铁氧体/活性炭复合吸附剂的制备和性能[J].天津大学学报,2005,38(4):361-363
[14]  Zhu M,Wang C,Diao G. In situsynthesis of silver nanostructures on magnetic Fe3O4@C core-shell nanocomposites and their application in catalytic reduction reactions[J]. Journal of Materials Chemistry,2013 (1):2118-2125
[15]  Hong D,Li X L,Peng Q. Monodisperse magnetic single-crystal ferrite microspheres[J]. Angewandte Chemie,2005,117:2842-2845
[16]  宗恩敏,魏丹,还中科,等.磷在氧化锆-碳纳米管复合材料上的吸附研究[J].无机化学学报, 2013,29(5):965-972
[17]  Liu Y,Gao J,Li C X,et al.Synthesis and adsorption performance of surface-grafted Co(Ⅱ)-imprinted polymer for selective removal of cobalt[J].Chinese Journal of Chemistry,2010,28(4):548-554
[18]  Carmo A M,Hundal L S,Michael L T. Sorption of hydrophobic organic compounds by soil materials: Application of unit equivalent Freundlich Coefficients[J].Environmental science & Technology,2000(34):4363-4369
[19]  Hsia T H, Lo S L, Lin C F, et al. Characterization of arsenate adsorption on hydrous iron oxide using chemical and physical methods[J]. Colloids and Surfaces A:Physicochemical and Engineering Aspects,1994,85(01):1-7

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133