CuFe_2O_4/改性活性炭磁性复合材料表征及其吸附性能
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摘要
运用化学沉淀法合成了CuFe_2O_4/改性活性炭(MAC)磁性纳米复合材料,并研究其对罗丹明B(Rh B)的吸附性能。运用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、傅里叶变换红外光谱仪(FT-IR)、振动样品磁强计(VSM)和比表面积测定仪等技术对其理化性质进行了表征,分析表明复合材料颗粒大小在10～100 nm之间;探讨了Cu Fe_2O_4/MAC磁性复合材料吸附Rh B的过程,考察了溶液的p H值、Rh B的初始质量浓度、温度等因素对吸附的影响。结果表明:CuFe_2O_4/MAC磁性复合材料可有效吸附去除Rh B,其吸附过程适合准二级动力学模型及吸附等温线符合Freundlich模型,饱和吸附容量为73. 54 mg/g。CuFe_2O_4/MAC磁性复合材料具有较好吸附性能和磁响应性,易于分离回收,可作为一种有效去除水体污染物的吸附材料。
The magnetic composite CuFe_2O_4/modified activated carbon( MAC) was synthesized by chemical precipitation,and its adsorption properties of Rh B were studied. The physicochemical property of CuFe_2O_4/MAC was characterized by scanning electron microscopy( SEM),X-ray diffraction( XRD),fourier transform infrared( FT-IR),vibrating sample magnetometer( VSM) and Brunauer-Emmett-Teller surface area measurement( BET) methods. The particle size of composite was between10 nm to 100 nm. The adsorption process of Rh B was studied by magnetic composite CuFe_2O_4/MAC. The effect of solution p H,initial concentration of Rh B and temperature on the adsorption was investigated. The results show that Rh B could be effectively adsorbed by magnetic composite CuFe_2O_4/MAC. The adsorption process was well fitted with the Langmuir models with the adsorption maximum capacity of Rh B 73. 54 mg/g. The adsorption process of magnetic composite CuFe_2O_4/MAC for Rh B was conformed to the Pseudo-second-order kinetics model. Therefore,the magnetic composite CuFe_2O_4/MAC has good adsorption and magnetism and is easy to separate,which can be used as an adsorption material to effectively remove water pollutants.
The magnetic composite CuFe_2O_4/modified activated carbon( MAC) was synthesized by chemical precipitation,and its adsorption properties of Rh B were studied. The physicochemical property of CuFe_2O_4/MAC was characterized by scanning electron microscopy( SEM),X-ray diffraction( XRD),fourier transform infrared( FT-IR),vibrating sample magnetometer( VSM) and Brunauer-Emmett-Teller surface area measurement( BET) methods. The particle size of composite was between10 nm to 100 nm. The adsorption process of Rh B was studied by magnetic composite CuFe_2O_4/MAC. The effect of solution p H,initial concentration of Rh B and temperature on the adsorption was investigated. The results show that Rh B could be effectively adsorbed by magnetic composite CuFe_2O_4/MAC. The adsorption process was well fitted with the Langmuir models with the adsorption maximum capacity of Rh B 73. 54 mg/g. The adsorption process of magnetic composite CuFe_2O_4/MAC for Rh B was conformed to the Pseudo-second-order kinetics model. Therefore,the magnetic composite CuFe_2O_4/MAC has good adsorption and magnetism and is easy to separate,which can be used as an adsorption material to effectively remove water pollutants.
引文
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[26]王耀强,赵怡琳,李玲慧,等.海胆状Fe3O4@Ti O2磁性纳米介质对Pb2+的选择吸附特性[J].化工学报,2018,69(1):446-454.
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[2] Lyu H,Gao B,He F,et al. Experimental and modeling investigations of ball-milled biochar for the removal of aqueous methylene blue[J].Chemical Engineering Journal,2018,335(3):110-119.
[3] Li H,Dai M,Dai S,et al. Methylene blue adsorption properties of mechanochemistry modified coal fly ash[J]. Human and Ecological Risk Assessment,2018,24(8):1-9.
[4] Muthuraman G,Teng T T. Extraction and recovery of Rhodamine B,methyl violet and methylene blue from industrial wastewater using D2EHPA as an extractant[J]. Journal of Industrial and Engineering Chemistry,2009,15(6):841-846.
[5] Moghaddam S S,Moghaddam M R A,Arami M. Coagulation/flocculation process for dye removal using sludge from water treatment plant:optimization through response surface methodology[J]. Journal of Hazardous Materials,2010,175(1/3):651-657.
[6] Sachdeva S,Kumar A. Preparation of nanoporous composite carbon membrane for separation of rhodamine B dye[J]. Journal of Membrane Science,2009,329(1/2):2-10.
[7] El-Desoky H S,Ghoneim M M,ElSheikh R,et al. Oxidation of levafix CA reactive azo-dyes in industrial wastewater of textile dyeing by electrogenerated Fenton's reagent[J]. Journal of Hazardous Materials,2010,175(1/3):858-865.
[8] Labanda J,Sabate J,Llorens J. Modeling of the dynamic adsorption of an anionic dye through ion-exchange membrane adsorbert[J]. Journal of Membrane Science,2009,340(1/2):234-240.
[9] Li Z J,Zhang X W,Lin J,et al. Azo dye treatment with simultaneous electricity production in an aerbic-aerobic sequential reactor and microbial fuel cell coupled system[J]. Bioresource Technology,2010,101(12):4440-4 445.
[10] Chen M,Shang T,Fang W,et al. Study on adsorption and desorption properties of the starch grafted p-tert-butyl-calix[n] arene for butyl Rhodamine B solution[J]. Journal of Hazardous Materials,2011,185(2/3):914-921.
[11] Wu F C,Tseng R L. High Adsorption capacity Na OH-activated carbon for dye removal from aqueous solution[J]. Journal of Hazardous Material,2008,152(3):1256-1267.
[12]李海红,杨佩,薛慧,等. KOH活化法制备废旧棉织物活性炭及表征[J].精细化工,2018,35(1):174-180.
[13] Ai L,Zhang C,Liao F,et al. Removal of methylene blue from aqueous solution with magnetite loaded multi-wall carbon nanotube:kinetic,isotherm and mechanism analysis[J]. Journal of Hazardous Material,2011,198:282-290.
[14] Ai L,Huang H,Chen Z,et al. Activated carbon/CoFe2O4composites:facile synthesis,magnetic performance and their potential application for the removal of malachite green from water[J]. Chemical Engineering Journal,2010,156(2):243-249.
[15] Liu X,Fu S,Zhu L. High-yield synthesis and characterization of monodisperse sub-microsized CoFe2O4octahedra[J]. Journal of Solid State Chemistry,2007,180(2):461-466.
[16] Zhang Y Y,Xu Q,Zhang S X,et al. Preparation of thiol-modified Fe3O4@SiO2nano-particles and their application for gold recovery from dilute solution[J]. Sep Purif Technol,2013,116:391-397.
[17]许光益,隋铭皓,袁博杰,等.纳米CuFe2O4活化过一硫酸盐降解诺氟沙星性能[J].哈尔滨工业大学学报,2018,50(2):46-53.
[18]刘丽丽,臧德利,邓霞,等.氧化亚铜-活性炭复合光催化材料的制备与表征[J].化学与黏合,2013,35(4):14-16.
[19]施超,彭书传,胡真虎,等.活性炭纤维对水中罗丹明B的吸附性能[J].环境化学,2013,33(3):394-401.
[20]武荣成,曲久辉,吴成强.磁性吸附材料CuFe2O4吸附砷的性能[J].环境科学,2003,24(5):60-64.
[21] Kasnavia T,Vu D,Sabatini D A. Fluorescent dye and media properties affecting sorption and tracer selection[J]. Ground Water,1999,37(3):376-81.
[22] Kajiwara T,Chamber R W,et al. Dimer spectra of rhodamine B[J]. Chemical Physics Letters,1973,22(1):37-40.
[23] Langmuir I. The adsorption of gases on plain surface of glass,mica and platinum[J]. Journal of the American Chemical Society,1918,40(12):1361-1403.
[24] Freundlich H M F. Over the adsorption in solution[J]. Z. Phys. Chem.,1906,57:385-470.
[25]毕浩宇,李燕,周丹,等.磁性镁铝类水滑石的制备及其对甲基橙的吸附研究[J].化学通报,2018,81(2):175-181.
[26]王耀强,赵怡琳,李玲慧,等.海胆状Fe3O4@Ti O2磁性纳米介质对Pb2+的选择吸附特性[J].化工学报,2018,69(1):446-454.
[27] Cheng Z,Li Y,Li Z. Novel adsorption materials based on graphene oxide/Beta zeolite composite materials and their adsorption performance for rhodamine B[J]. J. Alloys Compd.,2017,708:255-263.
[28] Kaur S,Walia T P S,Kansa I. Removal of rhodamine B by adsorption on walnut shell charcoal[J]. J. Surf. Sci. Technol.,2008,24:179-193.
[29] Danish M,Ahmad T,Hashim R,et al. Comparison of surface properties of wood biomass activated carbons and their application against rhodamine B and methylene blue dye[J]. Surfaces&Interfaces,2018,11:1-13.
[30] Lamadab U,Wetchakum K,Kangwansupamonkon W. Effect of a pH-controlled co-precipitation process on rhodamine B adsorption of MnFe2O4nanoparticles[J]. RSC Advances,2018,8(12):6709-6718.