A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol
|dc.identifier.citation||Wang, Y. and Sun, H. and Duan, X. and Ang, H. and Tade, M. and Wang, S. 2015. A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol. Applied Catalysis B: Environmental. 172-173: pp. 73-81.|
In this study, magnetic carbon encapsulated nano iron hybrids (nano Fe0/Fe3C@CS) were synthesized via a novel one-pot hydrothermal method followed by self-reduction in N2 atmosphere. The structural, morphological, and physicochemical properties of the samples were thoroughly investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), N2 sorption isotherms and thermogravimetric analysis–differential scanning calorimetry (TGA–DSC). Catalytic performance of the as-synthesized nanoparticles was tested in activation of oxone® for phenol degradation in aqueous solutions. Superior catalytic performance was observed by complete removal of 20 ppm phenol within 10 min. The formation of Fe3C was found to contribute to a better stability and magnetic separation of Fe0/Fe3C@CS in its repeated uses. Both electron paramagnetic resonance (EPR) and classic quenching tests were carried out to investigate the mechanism of radical generation and evolution in phenol oxidation. Different from Co- and Mn-based catalysts in generation of sulfate radicals, Fe0/Fe3C@CS selectively induced hydroxyl radicals for phenol degradation.
|dc.title||A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol|
|dcterms.source.title||Applied Catalysis B: Environmental|
|curtin.department||Department of Chemical Engineering|
|curtin.accessStatus||Fulltext not available|