A novel ceramic membrane coated with MnO2-Co3O4 nanoparticles catalytic ozonation for benzophenone-3 degradation in aqueous solution: Fabrication, characterization and performance

摘要

A novel ceramic membrane coated with MnO2-Co3O4 nanoparticles was fabricated by catalytic ozonation for degradation of benzophenone-3, a typical ultraviolet absorber, from water. Synthesized MnO2-Co3O4 nanoparticles showed excellent catalytic activity. Structure and surface property characterization confirmed the presence of MnO2-Co3O4 nanoparticles with 7.05 +/- 0.99 nm diameters and a surface area as 90.0609 m(3)/g. These nanoparticles were suitable for the surface modification of ceramic membranes used in this study. Energy dispersive X-ray spectroscopy and atomic force microscopy analyses suggest that MnO2-Co3O4 nanoparticles filled membrane pores and reduced the surface roughness. The ceramic membrane coated with MnO2-Co3O4 nanoparticles showed remarkable activity in catalytic ozonation. The performance of the membrane and its surface nanoparticle layers were stable and the concentration of leached metal ions was low. After catalytic ozonation with the coated ceramic membrane, a reduction in toxicity was observed. The ceramic membrane coated with MnO2-Co3O4 nanoparticles catalytic ozonation is optional for BP-3 degradation from aqueous. (C) 2015 Elsevier B.V. All rights reserved.