Sol-gel Preparation of Photocatalytic Sm2Ti2O7/HZSM-5 Composite on Degradation of Reactive Brilliant Red X-3B

Medžiagotyra

Yuxuan LIU¹  Ling DU¹  Wenjie ZHANG² 

[1] ;Shenyang Ligong University;

关键词: photocatalysis;    Sm2Ti2O7;    calcination;    sol-gel;    HZSM-5;   

DOI  :  10.5755/j01.ms.24.3.18853

来源: DOAJ

【 摘 要 】

Sm₂Ti₂O₇ was loaded on the surface of HZSM-5 zeolite through a sol-gel route. HZSM-5 particles were coated with a thick layer of Sm₂Ti₂O₇ to form the composite. It was found that crystallization of pyrochlore phase Sm₂Ti₂O₇ begins at 800 °C. Continuous enlargement in Sm₂Ti₂O₇ crystallite size and cell volume are accompanied with the increase of calcination temperature. The bandgap energy of the samples calcined at temperature ranging from 600 to 1000 °C was found to be around 3.4 eV. BET specific surface area and pore volume of the materials continuously decreased with rising calcination temperature. The 70 % Sm₂Ti₂O₇/HZSM-5 calcined at 800 °C was found to have the greatest photocatalytic activity on RBR X-3B degradation.

DOI: http://dx.doi.org/10.5755/j01.ms.24.3.18853

【 授权许可】

Unknown