Abstract
A sol-gel method was used for the synthesis of La2Ti2O7 photocatalysts using PEG4000 as the template. The materials are
composed of the main perovskite La2Ti2O7 phase and a very small amount of La0.66TiO2.993 phase. The crystallite size of
La2Ti2O7 is almost not influenced by the addition of PEG4000. Small mesopores are formed in the PEG4000 modified
materials. The specific surface area is gradually enlarged with increasing amount of PEG4000. A schematic illustration of
photocatalytic degradation mechanism is suggested for La2Ti2O7. The maximum photocatalytic activity is found on the
La2Ti2O7 prepared using 1.5 g PEG4000..
Keywords
La2Ti2O7, PEG4000, Sol-gel, Photocatalytic.
Citation
YAN WANG, LING DU, LI LI, WENJIE ZHANG, Sol-gel synthesis of mesoporous La2Ti2O7 photocatalyst using PEG4000 as template, Optoelectronics and Advanced Materials - Rapid Communications, 10, 11-12, November–December 2016, pp.950-953 (2016).
Submitted at: Feb. 5, 2016
Accepted at: Nov. 25, 2016