(657b) Facile Synthesis and Photocatalytic Properties of TiO2 Nanoparticles Supported On Porous Glass Beads

Authors: 
Shen, C., Tsinghua University


This work presents a novel immobilization method for the preparation of highly dispersed TiO2 nanoparticles supported on porous glass beads. Mono-dispersed TiO2 nanoparticles exhibiting the anatase phase were obtained by the combination of an in-situ ion exchange process and a calcination process. The mean diameter and the loading amount of TiO2 were controllable in this green way. With the increase of loading amount of Ti from 0.08 wt.% to 4.55 wt.%, the mean diameter of the TiO2 nanoparticles varied from 3.8 to 5.3 nm. And the band gaps of the TiO2 nanoparticles with the highest and lowest loading amount are 3.25 and 3.00 eV, respectively. The prepared TiO2 nanoparticles supported on porous glass beads showed excellent photocatalytic performance for the degradation of methyl orange (MO). For the catalyst with a Ti content of 0.08 wt.%, when the dosage was 1.93 e-5 g/mL, 65% of the total MO decomposed after 30 min; for the catalyst with a Ti content of 2.56 wt.%, when the dosage reached 0.81 e-3 g/mL, complete degradation was observed.
See more of this Session: Photo, Microwave and Ultrasound Catalysis

See more of this Group/Topical: Catalysis and Reaction Engineering Division