标题：Co-polymerization of catechol and polyethylenimine on magnetic nanoparticles for efficient selective removal of anionic dyes from water作者：Long, YK (Long, Yangke); Xiao, L (Xiao, Ling); Cao, QH (Cao, Qihua)

来源出版物： POWDER TECHNOLOGY 卷：30页码： 24-34 DOI：10.1016/j.powtec.2017.01.013 出版年：APR 1 2017

摘要： In the present study, novel magnetic adsorbents Fe3O4@catechol/PEI were fabricated simply by copolymerization of catechol and branched polyethylenimine (PEI) onto Fe3O4 nanoparticles under alkaline condition, and characterized by transmission electron microscopy (TEM), thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and vibrating sample magnetometer (VSM). Adsorption of three different kinds of anionic dyes, methyl blue, orange G and amaranth, from aqueous solutions using Fe3O4@catechol/PEI was investigated. The adsorption results showed that the removal of anionic dyes by Fe3O4@catechol/PEI matched well with pseudo-second-order kinetic model and Langmuir isotherm model. The maximum adsorption capacities for methyl blue, orange G and amaranth were 344.8, 1923, and 146.2 mg.g(-1), respectively. Furthermore, the anionic dyes could be selectively absorbed from dye mixtures containing anionic and cationic dyes. After adsorption, Fe304@catechol/PEI could be efficiently separated from the solution under the adscititious magnetic field and could be easily regenerated. This novel magnetic adsorbent is a promising candidate for removal of anionic dyes in the wastewater.

入藏号：WOS:000395211800004

文献类型：Article

语种：English

作者关键词：Fe3O4 nanoparticles; Catechol; Polyethylenimine; Anionic dyes; Selective adsorption

扩展关键词： HEAVY-METAL IONS; AQUEOUS-SOLUTION; ENVIRONMENTAL REMEDIATION; ADSORPTION PROPERTIES; GRAPHENE OXIDE; METHYL-ORANGE; ORGANIC-DYES; CONGO RED; AZO DYES; ADSORBENT

通讯作者地址：Xiao, L (reprint author), Luojia Mt Wuchang, Wuhan 430072, Hunan, Peoples R China.

电子邮件地址： xiaoling9119@whu.edu.cn

地址： [Long, Yangke; Xiao, Ling; Cao, Qihua] Wuhan Univ, Sch Resource & Environm Sci, Key Lab Biomass Resource Chem & Environm Biotechn, Wuhan 430072, PR, Peoples R China.

研究方向：Engineering

ISSN：0032-5910

eISSN:1873-328X

影响因子：2.759