Fabrication and kinetic study of Nd-Ce doped Fe3O4-chitosan nanocomposite as catalyst in Fenton dye degradation
| Autor: | Paransa Alimard |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Nanocomposite
010405 organic chemistry Chemistry Spinel Doping Nanoparticle engineering.material 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis Inorganic Chemistry Chemical engineering Materials Chemistry engineering Magnetic nanoparticles Degradation (geology) Physical and Theoretical Chemistry Spectroscopy |
| Zdroj: | Polyhedron. 171:98-107 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/j.poly.2019.06.058 |
| Popis: | Nd-Ce doped Fe3O4-chitosan nanocomposite with a core–shell structure was prepared with the combination of a co-precipitation and a crosslinking method. The obtained magnetic nanocomposites were characterized systematically through the use of a UV–VIS, XRD, EDXA, SEM, FT-IR spectroscopy, TGA, Mass spectroscopy, TEM and an AGFM. The results revealed that the magnetic nanoparticles were spherical shaped with inverse spinel structure. The size of the nanoparticles were estimated 15 nm approximately. Magnetic measurement revealed that the saturation magnetization of the nanocomposite was 59.6 emu/g. It was found that the magnetic response and the catalytic activity of Fe3O4-chitosan nanocomposite increased when it doped with Nd+3 and Ce+3. The catalytic activity of Fe3O4-chitosan and Nd-Ce doped Fe3O4-chitosan nanocomposites were evaluated in Fenton degradation of Direct Red 81, and the degradation products were studied. The kinetic of degradation using Nd-Ce doped Fe3O4-chitosan was also investigated. Kinetic study revealed that the dye degradation obeyed pseudo-second-order Blanchard kinetic model. TGA results depicted the stability of Nd-Ce doped Fe3O4-chitosan nanocomposite in high temperatures. |
| Databáze: | OpenAIRE |
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