Nanosized TiO2 particles decorated on SiO2 spheres (TiO2/SiO2): synthesis and photocatalytic activities

Nanosized TiO 2 and nano-anatase TiO 2 decorated on SiO 2 spherical core shells were synthesized by using a sol–gel method. The synthesized pure TiO 2 nano particle and TiO 2 grafted on SiO 2 sphere with various ratios have been characterized for their structure and morphologies by X-ray diffraction...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Journal of sol-gel science and technology 2010-10, Vol.56 (1), p.53-60
Hauptverfasser:	Sirimahachai, Uraiwan, Ndiege, Nicholas, Chandrasekharan, Ramesh, Wongnawa, Sumpun, Shannon, Mark A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anatase Catalysis Catalytic activity Ceramics Chemistry Chemistry and Materials Science Colloidal gels. Colloidal sols Colloidal state and disperse state Composites Dyes Electrons Exact sciences and technology Fourier transforms General and physical chemistry Glass Infrared spectrophotometers Inorganic Chemistry Materials Science Methylene blue Morphology Nanocomposites Nanotechnology Natural Materials Optical and Electronic Materials Original Paper Photocatalysis Photochemistry Photoelectrons Physical chemistry of induced reactions (with radiations, particles and ultrasonics) Pollutants Silicon dioxide Sol-gel processes Spectrophotometry Spherical shells Synthesis Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Titanium dioxide Transmission electron microscopy X ray photoelectron spectroscopy X-ray diffraction
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Nanosized TiO 2 and nano-anatase TiO 2 decorated on SiO 2 spherical core shells were synthesized by using a sol–gel method. The synthesized pure TiO 2 nano particle and TiO 2 grafted on SiO 2 sphere with various ratios have been characterized for their structure and morphologies by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrophotometry (FTIR) and transmission electron microscopy (TEM). Their surface areas were measured using the BET method. The photocatalytic activity of all nanocomposites was investigated using methylene blue as a model pollutant. The synthesized TiO 2 /SiO 2 particles appeared to be more efficient in the degradation of methylene blue pollutant, as compared to pure TiO 2 particles.
ISSN:	0928-0707 1573-4846
DOI:	10.1007/s10971-010-2272-z