A magnetic nanomaterial modified with poly-lysine for efficient removal of anionic dyes from water

[Display omitted] •The adsorbent can be conveniently separated and effectively reused.•The surface containing lots of amino groups can enhance the adsorption capacities for anionic dyes.•Low toxic organosilane and poly-lysine were used as raw materials. This work describes the synthesis and adsorpti...

Full description

Saved in:
Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2015-02, Vol.262, p.313-318
Main Authors: Zhang, Yan-Ru, Su, Peng, Huang, Jun, Wang, Qing-Rong, Zhao, Bao-Xiang
Format: Article
Language:English
Subjects:
Adsorption
Anionic dyes
Contact
Diffraction
Dyes
Magnetic nanoparticles
Nanoparticles
Nanostructure
Poly-lysine
Thermogravimetric analysis
X-rays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •The adsorbent can be conveniently separated and effectively reused.•The surface containing lots of amino groups can enhance the adsorption capacities for anionic dyes.•Low toxic organosilane and poly-lysine were used as raw materials. This work describes the synthesis and adsorption behavior of Fe3O4 magnetic nanoparticles (MNPs) modified with 3-glycidoxypropyltrimethoxysilane (GPTMS) and poly-lysine (P-Lys). The magnetic nanoparticles were characterized by infra-red spectra, transmission electron microscopy, X-ray diffraction, thermogravimetric analysis and X-ray photoelectron spectroscopy. To understand the adsorption mechanism of the MNPs, we investigated anionic dye uptake capacity of Fe3O4@GPTMS@P-Lys as a function of contact time, dye concentration and pH. The MNPs could effectively remove anionic dyes including methyl blue (MB), orange I (OR-I), amaranth (AM) and acid red 18 (AR-18) from water solution. Furthermore, the improved adsorbent showed convenient separation and efficient reusability, and enhanced the adsorption capacity for anionic dyes.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2014.09.094