title: Synthesis of 3D porous ferromagnetic NiFe2O4 and using as novel adsorbent to treat wastewater.
abstract: Three dimensions (3D) porous NiFe(2)O(4) is synthesized by a sol-gel method using egg white. The obtained NiFe(2)O(4) shows both good ferromagnetic properties and high adsorption capacity. The porous NiFe(2)O(4) 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 NiFe(2)O(4) can be separated under a magnetic field conveniently and keeps high removal efficiency (>97%) during seven reusable cycles. These results suggest that the porous NiFe(2)O(4) is a promising favorable and reusable adsorbent.
authors.affiliation: Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China.
authors.forename: Xiangyu
authors.initials: X
authors.lastname: Hou
authors.forename: Jing
authors.initials: J
authors.lastname: Feng
authors.forename: Xiaohan
authors.initials: X
authors.lastname: Liu
authors.forename: Yueming
authors.initials: Y
authors.lastname: Ren
authors.forename: Zhuangjun
authors.initials: Z
authors.lastname: Fan
authors.forename: Tong
authors.initials: T
authors.lastname: Wei
authors.forename: Jian
authors.initials: J
authors.lastname: Meng
authors.forename: Milin
authors.initials: M
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D004396:Coloring Agents / Q000302:isolation & purification; D052918:Environmental Restoration and Remediation / Q000379:methods*; D005290:Ferric Compounds / Q000138:chemical synthesis* / Q000494:pharmacology*; D059346:Magnets; D015394:Molecular Structure; D009532:Nickel / Q000494:pharmacology*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D014876:Water Pollution / Q000517:prevention & control*
chemical_list: D004396:Coloring Agents; D005290:Ferric Compounds; D014874:Water Pollutants, Chemical; C550717:nickel ferrite; D009532:Nickel