Nanotechnology · 2018 · 43 citations · 56 references
Natural SciencesChemical EngineeringMaterials ScienceCatalysisNanomaterialsNanotechnologyCatalyst PreparationCatalyst SynthesisMetal Oxide NanomaterialsNanocatalysisNanomaterials SynthesisPhotocatalysisDye DegradationNanoparticlesNanostructuresPhotocatalytic MaterialsSpecific Surface AreaSurface AreaTitanium Dioxide NanoparticlesTitanium Dioxide Photocatalysis
Abstract Mesoporous TiO 2 hollow spherical nanostructures with high surface areas were successfully prepared using a microwave method. The prepared hollow spheres had a size range between 200 and 500 nm. The spheres consisted of numerous smaller TiO 2 nanoparticles with an average diameter of 8 nm. The particles had an essentially mesoporous structure, with a pore size in the range of 2–50 nm. The results confirmed that the synthesised of anatase TiO 2 nanoparticles with specific surface area approximately 172.3 m 2 g −1 . The effect of ultraviolet and visible light irradiation and catalyst dosage on the TiO 2 photocatalytic activity was studied by measuring the degradation rate of methylene blue. The maximum dye degradation performances with low catalyst loading (30 mg) were 99% and 63.4% using the same duration of ultraviolet and visible light irradiation, respectively (120 min).
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