Covalently Bonded Poly(Acrylic Acid)-Fe3O4 Nanocomposite Prepared in Supercritical CO2 and Its Adsorption Capacity for Methylene Blue

Title
Covalently Bonded Poly(Acrylic Acid)-Fe3O4 Nanocomposite Prepared in Supercritical CO2 and Its Adsorption Capacity for Methylene Blue
Author(s)
심재진웬방호아
Keywords
AQUEOUS-SOLUTIONS; WASTE-WATER; MAGNETIC NANOPARTICLES; RHODAMINE-B; BOTTOM ASH; BASIC-DYES; REMOVAL; KINETICS; CHITOSAN; EQUILIBRIUM
Issue Date
201205
Publisher
TAYLOR & FRANCIS INC
Citation
SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY, v.42, no.4, pp.449 - 454
Abstract
The surface of pristine Fe3O4 nanoparticles is first modified with a silane coupling agent methacryloxypropyltrimethoxysilane (MPTMS), which provides a reactive C = C bond to copolymerize with acrylic acid (AA) by in situ polymerization in scCO(2), resulting in the formation of covalently bonded PAA-Fe3O4 nanocomposite. The as-synthesized products were characterized using FT-IR, TGA, XRD, SEM, TEM, and XPS. The results indicated that the obtained nanocomposite had a core-shell structure, in which the Fe3O4 nanoparticle cores were coated completely with PAA shells. The adsorption of methylene blue onto the obtained nanocomposite increased with increasing solution pH.
URI
http://hdl.handle.net/YU.REPOSITORY/28356http://dx.doi.org/10.1080/15533174.2011.611851
ISSN
1553-3174
Appears in Collections:
공과대학 > 화학공학부 > Articles
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