Sol-gel preparation of a novel χLa2Ti2O7/HZSM-5 composite photocatalyst

被引：0
|
作者：
Zhang, Wenjie [1 ]
Liu, Yuxuan [1 ]
Du, Ling [1 ]
机构：
[1] Shenyang Ligong Univ, Sch Environm & Chem Engn, Shenyang 110159, Liaoning, Peoples R China
来源：
OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS | 2018年 / 12卷 / 3-4期
关键词：
La2Ti2O7; Photocatalytic; HZSM-5; Support; ELECTRONIC-STRUCTURE; OPTICAL-PROPERTIES; DEGRADATION; WATER; ZEOLITE;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A sol-gel method was used to prepare XLa2Ti2O7/HZSM-5 composite using HZSM-5 zeolite as the support. La2Ti2O7 is in the layered-perovskite structure after loading. Crystallite size of La2Ti2O7 shrinks slightly with decreasing loading percentage. Surface area and total pore volume of xLa(2)Ti(2)O(7)/HZSM-5 significantly increase with raising HZSM-5 content. The bandgap energies are 3.29, 3.55, 3.61, 3.63 and 3.73 eV for bare La2Ti2O7 and the composites containing 90%, 70%, 50% and 20% La2Ti2O7. The chemical environments of La, Ti and 0 in La2Ti2O7 do not noticeably change after loading. 34.8% of the initial RBR-X3B is degraded on 70%La2Ti2O7/HZSM-5 after 30 min of irradiation, while only 6.4% of the dye is degraded on the bare La2Ti2O7.
引用
收藏
页码：222 / 226
页数：5
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