Macromolecular Chemistry and Physics · 2009 · 43 citations · 43 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials ChemistryNanomaterialsNanotechnologyInorganic NanoparticlesMetal Oxide NanomaterialsNanocatalysisNanocompositesNanoparticle SynthesisPhotocatalysisCrystallinityCrystallinity AnalysisMesoporous MaterialsMetal Oxide Nanoparticles SynthesisNanoparticle FormationNanoparticlesPhotocatalytic MaterialsTitanium Dioxide Nanoparticles
Abstract We synthesized well‐defined, crystalline TiO 2 nanoparticles at room temperature by using spherical polyelectrolyte brush particles as a template. The template particles consist of a polystyrene core from which long chains of poly(styrene sodium sulfonate) are grafted. Tetraethylorthotitanate is hydrolyzed in the presence of brush particles leading to the formation of well‐dispersed TiO 2 nanoparticles ( d = 4∼12 nm). Wide‐angle X‐ray scattering demonstrates that anatase nanoparticles with high crystallinity have been generated at room temperature. The as‐prepared TiO 2 nanocomposites present high photocatalytic activity for the degradation of Rhodamine B under UV irradiation. Finally, mesoporous TiO 2 structures with defined pore size are formed after calcination. magnified image
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