Magnetic and high rate adsorption properties of porous Mn(1-x)Zn(x)Fe2O4 (0 ≤ x ≤ 0.8) adsorbents

Xiangyu Hou; Jing Feng; Xiaohan Liu; Yueming Ren; Zhuangjun Fan; Milin Zhang

doi:10.1016/j.jcis.2010.09.050

Magnetic and high rate adsorption properties of porous Mn(1-x)Zn(x)Fe2O4 (0 ≤ x ≤ 0.8) adsorbents

J Colloid Interface Sci. 2011 Jan 15;353(2):524-9. doi: 10.1016/j.jcis.2010.09.050. Epub 2010 Oct 25.

Authors

Xiangyu Hou¹, Jing Feng, Xiaohan Liu, Yueming Ren, Zhuangjun Fan, Milin Zhang

Affiliation

¹ Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China.

PMID: 20974474
DOI: 10.1016/j.jcis.2010.09.050

Abstract

Porous spinel ferrites Mn(1-x)Zn(x)Fe(2)O(4) (0 ≤ x ≤ 0.8) are synthesized by a simple sol-gel method with egg white. All samples exhibit porous morphologies and large BET surface area (S(BET)). The substitution of Zn(2+) affects the magnetic properties of ferrites and the adsorption properties of methylene blue (MB) on ferrites, obviously. The saturation magnetization (Ms) of Mn(1-x)Zn(x)Fe(2)O(4) increases before x=0.4, and decreases with further increase of Zn(2+) substitution. This can be ascribed to the changes of the cationic distribution and the variation of spin arrangement in A-site and B-site of spinel structure. All samples show high adsorption capacity and the removal efficiencies of MB reach up to >90% within 3 h. The Zn(2+) substitution accelerates the adsorption rate and capacity of MB on Mn(1-x)Zn(x)Fe(2)O(4). The quickest adsorption occurred at x=0.2 and the largest adsorption capacity occurred at x=0.8.