Electrospinning of a porous silica fiber-confined titanium dioxide catalyst for the degradation of methyl orange
Source abstract
Abstract
In this research, porous silica (P-SiO2) fibers were fabricated via electrospinning combined with a templating method. By regulating the mass ratio of polyacrylonitrile/polyethylene glycol (PAN/PEG), the structure of the P-SiO2 fibers was optimized and the fibrous diameter could be adjusted from 200 nm to 1.2 μm. Afterwards, the P-SiO2 fibers incorporated with titanium dioxide (TiO2, 22.5 nm) particles were developed into titanium dioxide/porous silica (TiO2/P-SiO2) fibers via an impregnating method. The TiO2 particles on the outer and inner surfaces of TiO2/P-SiO2 fibers exhibited excellent dispersion and chemical stability. The photocatalytic activity of the TiO2/P-SiO2 fibers was evaluated by measuring the photodegradation of methyl orange (MO) solution under UV irradiation. The results show that the photodegradation rate of the TiO2/P-SiO2 fibers (92%) is significantly higher than that of TiO2 powder (45.2%) within 15 min. Combining the advantages of TiO2/P-SiO2 fibers, the composite exhibits a potential application for the degradation of organic pollutants.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrospun Nanofibers in Biomedical Applications · TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
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