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Controllable Synthesis of Hierarchical Porous Fe3O4 Particles Mediated by Poly(diallyldimethylammonium chloride) and Their Application in Arsenic Removal
journal contribution
posted on 2013-12-11, 00:00 authored by Ting Wang, Liyuan Zhang, Haiying Wang, Weichun Yang, Yingchun Fu, Wenli Zhou, Wanting Yu, Kaisong Xiang, Zhen Su, Shuo Dai, Liyuan ChaiHierarchical
porous Fe3O4 particles with
tunable grain size were synthesized based on a facile poly (diallyldimethylammonium
chloride) (PDDA)-modulated solvothermal method. The products were
characterized with scanning electron microscopy (SEM) and transmission
electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS),
Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction
(XRD), N2 adsorption–desorption technique, vibrating
sample magnetometer (VSM), and dynamic light scattering (DLS). The
results show that increasing the PDDA dosage decrease the grain size
and particle size, which increased the particle porosity and enhanced
the surface area from 7.05 to 32.75 m2 g–1. Possible mechanism can be ascribed to the PDDA function on capping
the crystal surface and promoting the viscosity of reaction medium
to mediate the growth and assembly of grain. Furthermore, the arsenic
adsorption application of the as-obtained Fe3O4 samples was investigated and the adsorption mechanism was proposed.
High magnetic Fe3O4 particles with increased
surface area display improved arsenic adsorption performance, superior
efficiency in low-level arsenic removal, high desorption efficiency,
and satisfactory magnetic recyclability, which are very promising
compared with commercial Fe3O4 particles.
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surface arearesults showadsorption mechanismsample magnetometersurface area displayXPSArsenic RemovalHierarchicalparticle porosityreaction mediumHierarchical Porous Fe 3O Particles Mediatedarsenic adsorption applicationdesorption efficiencydiallyldimethylammonium chlorideXRDDLSPDDA functionControllable SynthesisFe 3O particlesTEMPDDA dosage decreaseSEMtunable grain sizescanning electron microscopyparticle sizetransmission electron microscopyarsenic removalcrystal surfacearsenic adsorption performancespectroscopygrain sizeVSM
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