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

Title
Development of photocatalytic TiO2 nanofibers by electrospinning and its application to degradation of dye pollutants
Authors
Doh, SJ[Doh, Seok Joo]Kim, C[Kim, Cham]Lee, SG[Lee, Se Geun]Lee, SJ[Lee, Sung Jun]Kim, H[Kim, Hoyoung]
DGIST Authors
Doh, SJ[Doh, Seok Joo]; Kim, C[Kim, Cham]Lee, SG[Lee, Se Geun]Lee, SJ[Lee, Sung Jun]Kim, H[Kim, Hoyoung]
Issue Date
2008-06-15
Citation
Journal of Hazardous Materials, 154(1-3), 118-127
Type
Article
Article Type
Article
Keywords
Anatase Crystalline PhaseCatalysisChemistryColoring AgentColoring AgentsCompositeCrystal StructureDegradationDyeDyesElectric FieldElectrospinningFlow RateFuchsineMethodologyNano-StructuresNanofiberNanofibersNanomaterialNanoparticleOptimizationOrganic PollutantOrganic PollutionOxidePhoto-CatalyticPhoto-Catalytic ActivityPhotocatalysisPhotochemistryPhotodegradationPollutant RemovalPollutantsRadiation ExposureRosaniline DyesSewageTemperature EffectTiO2TitaniumTitanium DioxideUltra-Violet RadiationUltraviolet RaysUltraviolet SpectrophotometryVictoria Blue BWaste Disposal, FluidWater ManagementWater PollutantWater Pollutants, ChemicalWater PurificationX Ray Diffraction
ISSN
0304-3894
Abstract
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 μL min-1. After annealing at 550 °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′ = 85.4 × 10-4 min-1) of composite TiO2 was significantly higher than that (15.7 × 10-4 min-1) of TiO2 nanofibers and that (14.3 × 10-4 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. © 2007 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/3566
DOI
10.1016/j.jhazmat.2007.09.118
Publisher
Elsevier B.V.
Related Researcher
Files:
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Collection:
Division of Nano∙Energy Convergence Research1. Journal Articles


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