Electrochemical Preparation of Magnetic Fe3O4 Nanocrystalline and Its Online Coagulation Properties†

doi:10.7503/cjcu20140422

Abstract

Abstract:

The online preparation and coagulation of magnetic Fe₃O₄ nanocrystallines were realized by electrochemical method with iron and carbon fiber as electrode. The product was characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM). The results show that the Fe₃O₄ nanocrystallines have uniform crystallite size, but with particle size between 30 nm and 100 nm. The coagulation study of high turbidity kaolin suspension was carried out, and the separation between flocculation and water was realized under the action of magnetic field. The results confirm that the electrochemically magnetic coagulation technology can quickly and efficiently get rid of the turbidity without mechanical filtration. Theoretical research results show that the electrochemical method can control the Fe₃O₄ types of surface charge, thus improve the effect of charge neutralization in water. The process of removing turbidity was due to the combination of charge neutra-lization and precipitation sweep process.

Key words: Electrochemical method, Magnetic Fe3O4 nanocrystalline, Online coagulation

CLC Number:

TrendMD:

LIN Songzhu, CHEN Huanhuan, LI Yihua, JIA Ruokun. Electrochemical Preparation of Magnetic Fe₃O₄ Nanocrystalline and Its Online Coagulation Properties^†[J]. Chem. J. Chinese Universities, 2014, 35(12): 2529.

Figures/Tables 7

Fig.1 XRD pattern of Fe3O4 nanoparticles The inset picture shows the sample before(left) and after(right) magnetic sparation for 2 min.

Fig.2 SEM image of Fe3O4 nanoparticles

Fig.3 Relationship between turbidity removal rate and Fe3O4 dose

Fig.4 Neutralization and furl mechanism of Fe3O4 nanoparticles

Fig.5 Effect of temperature on the turbidity removal

Fig.6 Effect of pH value on the turbidity removal rate

Fig.7 Relationship between Fe3O4 dose and turbidity removal rate with different initial turbidity

References 25

[1]	Ovenden C., Xiao H., Colloid Surf. A-Physicochem. Eng. Asp., 2002, 197(1), 225—234
[2]	Wang Y., Gao B., Yue Q. Y., Wei J. C., Chem. Eng. J., 2008, 142(2), 175—181
[3]	Cannas C., Ardu A., Peddis D., Sangregorio C., Piccaluga G., Musinu A., J. Colloid Interf. Sci., 2010, 343(2), 415—422
[4]	Bourlinos A. B., Bakandritsos A., Georgakilas V., Petridis D., Chem. Mater., 2002, 14(8), 3226—3228
[5]	Liu Q. X., Xu Z. H., Langmuir,1995, 11(12), 4617—4622
[6]	Wang Y., Teng X. W., Wang J. S., Yang H., Nano Lett., 2003, 3(6), 789—793
[7]	Daou T. J., Pourroy G., Begin-Colin S., Greneche J. M., Uihaq-Bouillet C., Legare P., Bernhardt P., Leuvrey C., Rogez G., Chem. Mater., 2006, 18(18), 4399—4404
[8]	Wines T. H., Dukhin A. S., Somasundaran P., J. Colloid Interf. Sci., 1999, 216(2), 303—308
[9]	Yu W. G., Zhang T. L., Zhang J. G., Qiao X. J., Liu Y. H., Chem. Mater., 2006, 60(24), 2998—3001
[10]	Feng X. F., Guo H. J., Patel K., Zhou H., Lou X., Chem. Eng. J., 2014, 244, 327—334
[11]	Antuña-Jiménez D., Blanco-López M. C., Miranda-Ordieres A. J., Lobo-Castanon M. J., Polymer, 2014, 55(5), 1113—1119
[12]	Fan R., Chen X. H., Gui Z., Mater. Res. Bull., 2001, 36(3), 497—502
[13]	Wines T. H., Dukhin A. S., Somasundaran P., J. Colloid Interf. Sci., 1999, 216(2), 303—308
[14]	Farrell D., Cheng Y. H., McCallum R. W., Sachan M., Majetich S. A., J. Phys. Chem. B, 2005, 109(28), 13409—13419
[15]	Jiang Z. Q., Song S., Dou H. J., Sun K., Wang Y. M., Huang C. F., Wei Z. H., Qu G. X., Chem. J. Chinese Universities, 2012, 33(12), 2609—2616
	(蒋泽权, 宋晟, 窦红静, 孙康, 王一鸣, 黄超凡, 魏振华, 曲冠雄. 高等学校化学学报, 2012, 33(12), 2609—2616)
[16]	Chen M. J., Xiong X. M., Shen H., Liu H. F., Chem. J. Chinese Universities, 2013, 34(8), 1801—1805
	(陈明洁, 熊小敏, 沈辉, 刘海峰. 高等学校化学学报, 2013, 34(8), 1801—1805)
[17]	Feng J., Zhang D. D., Liu Y. F., Bai Y., Chen Q. D., Liu S. Y., Sun H. B., J. Phys. Chem. C, 2010, 114(14), 6718—6721
[18]	Wei X., Xie T. F., Peng L. L., Fu W., Chen J. S., Gao Q., Hong G. Y., Wang D. J., J. Phys. Chem. C, 2011, 115(17), 8637—8642
[19]	Lu J., Jiao X. L., Chen D. R., Li W., J. Phys. Chem. C, 2009, 113(10), 4012—4017
[20]	Mulakaluri N., Pentcheva R., J. Phys. Chem. C, 2012, 116(31), 16447—16453
[21]	Ai Z. H., Deng K. J., Wan Q. F., Zhang L. Z., Lee S. C., J. Phys. Chem. C, 2010, 114(14), 6237—6242
[22]	Williams D. J. A., Williams K. P., J. Colloid Interf. Sci., 1978, 65(1), 79—87
[23]	Bockris J. O. M., Reddy A. K. N., Electrochemistry M., Electrodics in Chemistry, Engineering, Biology and Environmental Science, Springer, Berlin, 2000, 1989—2053
[24]	Bockris J. O. M., Khan S. U. M., Surface Electrochemistry: A Molecular Level Approache, Springer, Berlin, 1993, 1834—1902
[25]	Yang Z., Wu H., Yuan B., Huang M., Yang H., Li A., Bai J. F., Cheng R. S., Chem. Eng. J., 2014, 244, 209—217

Electrochemical Preparation of Magnetic Fe₃O₄ Nanocrystalline and Its Online Coagulation Properties^†

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