Synthesis of 3D porous ferromagnetic NiFe2O4 and using as novel adsorbent to treat wastewater

被引：66

作者：

Hou, Xiangyu ^{[1
,3
]}

Feng, Jing ^{[1
]}

Liv, Xiaohan ^{[1
]}

Ren, Yueming ^{[1
]}

Fan, Zhuangjun ^{[1
]}

Wei, Tong ^{[1
]}

Meng, Jian ^{[2
]}

Zhang, Milin ^{[1
]}

机构：

[1] Harbin Engn Univ, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

[3] SOA Tianjin, Inst Seawater Desalinat & Multipurpose Utilizat, Tianjin 300192, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2011年 / 362卷 / 02期

基金：

美国国家科学基金会;

关键词：

NiFe2O4; 3D pore; Ferromagnetism; Adsorption; Magnetic separation; SOL-GEL METHOD; AZO-DYE; ADSORPTION; REMOVAL; NANOPARTICLES; NANOSPHERES; FABRICATION; MECHANISM; POLYMER; SILICA;

D O I：

10.1016/j.jcis.2011.06.070

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three dimensions (3D) porous NiFe2O4 is synthesized by a sol-gel method using egg white. The obtained NiFe2O4 shows both good ferromagnetic properties and high adsorption capacity. The porous NiFe2O4 shows good adsorption properties for organic dyes (Methylene Blue (138.50 mg/g), Fuchsine Red (14.61 mg/g), Methyl Violet (19.06 mg/g)) and heavy metal ions (Cu (II) (55.83 mg/g), Cr (VI) (36.95 mg/g) and Ni (II) (37.02 mg/g)) due to its 3D interconnected porous structure. The maximum adsorption of Methylene Blue (MB) fit the pseudo-second-order model and Langmuir isotherm equation well. More interestingly, the ferromagnetic NiFe2O4 can be separated under a magnetic field conveniently and keeps high removal efficiency (>97%) during seven reusable cycles. These results suggest that the porous NiFe2O4 is a promising favorable and reusable adsorbent. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：477 / 485

页数：9

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