Under the influence of different magnetic field strength,the prepared NH2-SH-MWCNTs composites were characterized by transmission electron microscopy,fourier infrared analysis and thermogravimetric analysis,and then added them to the circulating water system to conduct dynamic adsorption of phenol.Combined with the change of hydrogen bond number in circulating water and studied the effect of magnetic field on the adsorption of phenol by NH2-SH-MWCNTs composite.The results showed that,in the presence of magnetic field,due to the impact of Lorents force,the equilibrium adsorption capacity of NH2-SH-MWCNTs decreased with respect to phenol.And the stronger the magnetic field,the smaller the adsorption capacity.When there was no magnetic field intensity,the adsorption capacity reached the maximum.But hydrogen bonds can increase the adsorption rate,and the more the hydrogen bond number,the faster the adsorption rate.When the magnetic field strength was zero,the adsorption rate was the fastest.
[1] Pan B,Lin D H,Mashayekhi H,et al.Adsorption and hysteresis of bisphenol a and 17α-ethinyl estradiol on carbon nanomaterials[J].Environ Sci Technol,2008,42(15):5480-5485.
[2] 孙明礼,成荣明,徐学诚,等.苯酚及取代酚在碳纳米管上的吸附研究[J].化学研究与应用,2006,18(1):13-18.
[3] 刘立柱.有机苯或酚类在碳纳米管上的吸附研究[D].哈尔滨:黑龙江大学,2008.
[4] Fagan S,Souza A,Lima J,et al.1,2-dichorobenzene interacting with carbon nanotubes[J].Nam Lett,2004,4(7):1285-1288.
[5] 蒋秉植,杨健美.磁场对某些化学反应的影响[J].化学通报,1991,2(10):11-15.
[6] 杨卫亚,沈智奇,王丽华,等.透射电子显微镜及相关技术在多相催化研究中的应用[J].分析测试学报,2010,29(7):755-760.
[7] Fu R Q,Liu Y,Lou Z M,et al.Adsorption removal of Pb(Ⅱ) by magnetic activated carbon incorporated with amino groups from aqueous solutions[J].Journal of the Taiwan Institute of Chemical Engineers,2016,2(62):247-258.
[8] Zhou F,Yue B,Wang X L.Surface roughness,mechanical properties and bonding structure of silicon carbon nitride films grown by dual ion beam sputtering[J].Journal of Alloys and Compounds,2010,492(1-2):269-276.
[9] Mourao P A M,Carrott P J M,Carrott M M L.Application of different equations to adsorption isotherms of phenolic compounds on activated carbons prepared from cork[J].Carbon,2006,44(12):2422-2429.
[10] Pham C V,Eck M,Krueger M.Thiol functionalized reduced graphene oxide as a base material for novel graphene-nanoparticle hybrid composites[J].Chemical Engineering Journal,2013,231(9):146-154.
[11] Abdel-Ghani N T,El-Chaghaby G A,Helal F S.Individual and competitive adsorption of phenol and nickel onto multiwalled carbon nanotubes[J].Journal of Advanced Research,2014,6(3):1-11.
[12] Rao G P,Lu C,Su F.Sorption of divalent metal ions from aqueous solution by carbon nanotubes:a review[J].Separation Purification Technology,2007,58(1):224-231.
[13] 李婷,孟昭福,张斌.两性修饰膨润土对苯酚的吸附及热力学特征[J].环境科学,2012,33(5):1632-1638.
[14] Wu F C,Tseng R L,Juang R S.Kinetic modeling of liquid phase adsorption of reactive dyes and metal ions on chitosan[J].Wat Res,2001,35(3):613-618.
[15] Rao G P,Lu C,Su F.Sorption of divalent metal ions from aqueous solution by carbon nanotubes:a review[J].Separation Purification Technology,2007,58(1):224-231.
[16] Hosoda H,Mori H,Sogoshi N,et al.Refractive indices of water and aqueous electrolyte solutions under high magnetic fields[J].J Phys Chem A,2004,108(9):1461-1469.
[17] Marcus Y.Effect of ions on the structure of water:structure making and breaking[J].Chem Rev,2009,109(3):1346-1351.
基金资助
甘肃省青年科技基金计划(1606RJYA305)