Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles
Jovanović, Dragana J.
Rabanal, Maria Eugenia
Gómez-Villalba, Luz Stella
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Hierarchically assembled TiO2 nanoparticles into larger spherical ones were obtained using aerosol-assisted processing method. Unagglomerated particles with the mean size of 440 nm were obtained from colloidal solution of TiO2 nanoparticles (~4.5 nm) using ultrasonic spray pyrolysis at 550°C. Their morphological complexity and structural polymorphism were investigated by using X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM) coupled with selected area electron diffraction (SAED) analysis. Pronounced evolution of nanocrystalline TiO2(B) phase assembled together with the anatase building units (sized ~15 nm) in uniform submicrometric particles implicate their feasibility to be used in dye-sensitised solar cells and lithium ion batteries.
Ključne reči:TiO2 nanoparticles / aerosol processing / nanotechnology / hierarchically organised spherical particles / light scattering centres / lithium ion batteries / dye-sensitised solar cells / DSSC
Izvor:International Journal of Materials and Product Technology, 2015, 221-229
- Bucks, UK : INDERSCIENCE Publishers