Development of photocatalytic TiO2 nanofibers by electrospinning and its application to degradation of dye pollutants

We have developed photocatalytic TiO2 nanofibers for the treatment of organic pollutants by using electrospinning method. We found that the optimized electrospinning conditions (electric field and flow rate) were 0.9 kV cm(-1) and 50 microL min(-1). After annealing at 550 degrees C for 30 min, we fa...

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Bibliographic Details
Published in:Journal of hazardous materials 2008-06, Vol.154 (1-3), p.118-127
Main Authors: SEOK JOO DOH, KIM, Cham, SE GEUN LEE, SUNG JUN LEE, KIM, Hoyoung
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheric pollution
Catalysis
Catalytic reactions
Chemical engineering
Chemistry
Coloring Agents - chemistry
Coloring Agents - radiation effects
Exact sciences and technology
General and physical chemistry
Nanostructures - chemistry
Photochemistry
Pollution
Reactors
Rosaniline Dyes - chemistry
Rosaniline Dyes - radiation effects
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Titanium - chemistry
Ultraviolet Rays
Waste Disposal, Fluid - methods
Water Pollutants, Chemical - chemistry
Water Pollutants, Chemical - radiation effects
Water Purification - methods
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Summary:We have developed photocatalytic TiO2 nanofibers for the treatment of organic pollutants by using electrospinning method. We found that the optimized electrospinning conditions (electric field and flow rate) were 0.9 kV cm(-1) and 50 microL min(-1). After annealing at 550 degrees C for 30 min, we fabricated TiO2 nanofibers (average 236 nm thick) with anatase crystalline phase. To increase photocatalytic activity and effective surface area, we coated photocatalytic TiO2 particles on the TiO2 nanofibers by using sol-gel method. The degradation rate (k'=85.4x10(-4) min(-1)) of composite TiO2 was significantly higher than that (15.7x10(-4) min(-1)) of TiO2 nanofibers and that (14.3x10(-4) min(-1)) of TiO2 nanoparticles by the sol-gel method. Therefore, we suggested that the composite TiO2 of nanofibers and nanoparticles be suitable for the degradation of organic pollutants.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2007.09.118