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Citrate Stabilized Hierarchical SPIO Nanostructures: Synthesis and Application Towards Effective Removal of Toxin, Microcystin ‐LR from Water
Author(s) -
Narasimha Gundeboina,
Mahesh Adimoolam Ganga,
Manorama Sunkara V.
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201700664
Subject(s) - superparamagnetism , coercivity , adsorption , materials science , magnetite , remanence , nanostructure , chemical engineering , nanotechnology , saturation (graph theory) , nanoparticle , magnetization , chemistry , organic chemistry , magnetic field , physics , mathematics , quantum mechanics , combinatorics , engineering , metallurgy , condensed matter physics
Hierarchical hollow nanostructures because of their unique structural, physical and chemical properties make them potentially attractive in various fields like catalysis, delivery vehicles, sensors, photonic devices, optics and as adsorbents. The present study deals with a simple method for the synthesis of citrate stabilized hierarchical hollow superparamagnetic Fe 3 O 4 nanospheres (SPION's) for the facile removal of Microcystin‐LR (MC–LR), a cyanobacteria produced toxin from water. The morphological and structural evaluation confirms the formation of magnetite Fe 3 O 4 hollow nanospheres of size around 300 nm by the assembly of 10 nm sized nanoparticles. The magnetic studies showed that the as prepared spheres were superparamagnetic at room temperature, with saturation magnetization around 50–60 emu/g and negligible remanence and coercivity. The amount of MC–LR adsorbed on the SPION's was estimated by HPLC and higher adsorption was observed in hollow Fe 3 O 4 spheres. The superparamagnetic nature of hollow Fe 3 O 4 makes the extraction of MC–LR from water convenient improving the efficiency of water treatment, making it reusable and cost effective.