Synthesis of Hierarchically Porous Cafe₂O₄/Carbon Fiber Hybrids and Microwave Induced Catalytic Activity (cited: 2)

Hierarchically porous CaFe₂O₄/carbon ber hybrids with enhanced microwave induced cat-alytic activity for the degradation of methyl violet (MV) from water were synthesized from kapok by a novel two-step process coupling pore-fabricating and nanoparticles assembling. The as-prepared samples exhibited characteristic hollow ber morphology, CaFe₂O₄ nanopar-ticles dispersed uniformly on the surface of hollow carbon fibers (HCF). The effects of various factors such as CaFe₂O₄ loading, microwave power, catalyst doses, initial concen-tration of MV solution and pH value on the microwave induced degradation of MV over CaFe₂O₄/HCF were evaluated. It was found that the microwave induced degradation of MV over CaFe₂O₄/HCF had high reaction rate and short process time. The kinetic study indicated that the degradation of MV over CaFe₂O₄/HCF followed pseudo-first-order kinet-ics model. The high catalytic activity of CaFe₂O₄/HCF was facilitated by the synergistic relationship between microwave induced catalytic reaction and adsorption characteristics.