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LILI YANG1, ZHENG MA1, WENJIE ZHANG1,*
Porous lanthanum titanate was synthesized through a sol gel route using PEG2000. The addition of PEG2000 inhibits perovskite La2Ti2O7 crystal growth, and crystallite size of La2Ti2O7 decreases with increasing PEG2000. BET surface area of the samples increases from 15.3 m 2 /g of the nonporous sample to 52.4 m 2 /g of the sample obtained with 3 g of PEG2000. FTIR and FT Far IR spectra of La2T2O7 samples show the effects of PEG2000 on the functional groups in the materials. The reaction rate constant is 0.0032 min 1 for the La2Ti2O7 sample prepared without PEG2000, while the reaction rate constants are promoted to 0.0135 and 0.0191 min 1 when 1 and 3 g of PEG2000 are used to prepare the porous La2Ti2O7. The enhanced photocatalytic activity of the porous La2Ti2O7 can be attributed to the increasing porosity and decreasing crystallite size..
Lanthanum titanate, Photocatalytic, Azophloxine, Degradation, PEG2000.
LILI YANG, ZHENG MA, WENJIE ZHANG, Improved photocatalytic activity of La 2 Ti 2 O 7 on azophloxine degradation: the effects of PEG2000, Optoelectronics and Advanced Materials - Rapid Communications, 13, 7-8, July-August 2019, pp.482-486 (2019).
Submitted at: Nov. 11, 2018
Accepted at: Aug. 20, 2019
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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