Journal
APPLIED SURFACE SCIENCE
Volume 324, Issue -, Pages 854-863Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2014.11.060
Keywords
Magnetic colloidal nanocrystal clusters; Surface functionalization; Dye adsorption; Electrostatic interactions; Poly(4-styrenesulfonic acid-co-maleic acid) sodium
Categories
Funding
- National Natural Science Foundation of China [21106116]
- project of academic innovation team, Southwest University for Nationalities [XN2014-4]
- project of postgraduate degree construction, Southwest University for Nationalities [2014XWD-S0703]
- Innovative research program for students of Southwest University for Nationalities [CX2014SZ57]
Ask authors/readers for more resources
Magnetic colloidal nanocrystal clusters (MCNCs) modified with different amounts of poly(4-styrenesulfonic acid-co-maleic acid) sodium (PSSMA) have been prepared through simple one-step solvothermal method for removal of methylene blue (MB) from aqueous solution. The prepared MCNCs are characterized by Fourier transform infrared (FT-IR) spectra, scanning electron microscope (SEM), transmission electron microscope (TEM), thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), X-ray diffraction (XRD), nitrogen adsorption-desorption technique and dynamic light scattering (DLS). Moreover, effects of the solution pH, contact time, adsorbent dosage, ionic strength and initial dye concentration on MB adsorption onto the MCNCs are systematically investigated. The PSSMA-modified MCNCs show fast and highly-efficient MB removal capacity, which dramatically depends on the immobilization amounts of PSSMA, solution pH and adsorbent dosage. Their adsorption kinetics and isotherms exhibit that the kinetics and equilibrium adsorptions can be well-described by pseudo-second-order kinetic and Langmuir model, respectively. These magnetic nanocomposites, with high separation efficiency, low production cost and recyclable property, are promising as functional adsorbents for efficient removal of cationic organic pollutants from aqueous solution. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available