Trimethyl Chitosan/Siloxane-Hybrid Coated Fe3O4 Nanoparticles for the Uptake of Sulfamethoxazole from Water
authors Soares, SF; Fernandes, T; Trindade, T; Daniel-da-Silva, AL
nationality International
journal MOLECULES
author keywords trimethyl chitosan; magnetic nanoparticles; core@shell; hybrid coating; water treatment; adsorption; sulfamethoxazole
keywords WASTE-WATER; N,N,N-TRIMETHYL CHITOSAN; EMERGING POLLUTANTS; REMOVAL; ADSORPTION; PHARMACEUTICALS; MEMBRANES; TOXICITY; CHLORIDE; SPECTROSCOPY
abstract The presence of several organic contaminants in the environment and aquatic compartments has been a matter of great concern in the recent years. To tackle this problem, new sustainable and cost-effective technologies are needed. Herein we describe magnetic biosorbents prepared from trimethyl chitosan (TMC), which is a quaternary chitosan scarcely studied for environmental applications. Core@shell particles comprising a core of magnetite (Fe3O4) coated with TMC/siloxane hybrid shells (Fe3O4@SiO2/SiTMC) were successfully prepared using a simple one-step coating procedure. Adsorption tests were conducted to investigate the potential of the coated particles for the magnetically assisted removal of the antibiotic sulfamethoxazole (SMX) from aqueous solutions. It was found that TMC-based particles provide higher SMX adsorption capacity than the counterparts prepared using pristine chitosan. Therefore, the type of chemical modification introduced in the chitosan type precursors used in the surface coatings has a dominant effect on the sorption efficiency of the respective final magnetic nanosorbents.
publisher MDPI
issn 1420-3049
year published 2019
volume 24
issue 10
digital object identifier (doi) 10.3390/molecules24101958
web of science category Biochemistry & Molecular Biology; Chemistry, Multidisciplinary
subject category Biochemistry & Molecular Biology; Chemistry
unique article identifier WOS:000470996600116
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 3.267
5 year journal impact factor 3.589
category normalized journal impact factor percentile 56.714
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg