The sol-gel synthesis and photocatalytic activity of Gd-SiO2-TiO2 photocatalyst

被引：23
作者：
Feng, Hongwei [1 ]
Xu, Hui [2 ]
Feng, Hongtu [3 ]
Gao, Ying [4 ]
Jin, Xinyuan [5 ]
机构：
[1] Yulin Univ, Sch Energy Engn, Yulin 719000, Peoples R China
[2] Yulin Univ, Sch Chem & Chem Engn, Yulin 719000, Peoples R China
[3] Yulin Univ, Sch Foreign Languages, Yulin 719000, Peoples R China
[4] Yulin Univ, Sch Math & Stat, Yulin 719000, Peoples R China
[5] Wenzhou Univ, Oujiang Coll, Wenzhou 325035, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2019年 / 733卷
关键词：
Gd-SiO2-TiO2; Photocatalyst; Sol-gel method; TIO2; PHOTOCATALYSIS; DEGRADATION; LA; PERFORMANCE; COMPOSITE; NANOCOMPOSITES; DECOMPOSITION; NANOPARTICLES; OXIDATION; PR;
D O I：
10.1016/j.cplett.2019.136676
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The sol-gel method was used to synthesize Gd-SiO2-TiO2 composite photocatalysts. When the doping amounts of Si and Gd reached 9.1 mol% and 0.2 mol% respectively, the sample showed the optimal photocatalytic activity during the methylene blue (MB) degradation. When the calcination temperature was lower than 550 degrees C, Gd-SiO2-TiO2 photocatalyst has an anatase crystal structure. After doping of Si and Gd, the absorption wavelength thresholds of the sample approached 407 nm with the energy gap of 3.05 eV. Gd-SiO2-TiO2 photocatalyst showed the degradation efficiency about 90% to methylene blue (MB) under irradiation of simulated sunlight.
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页数：5
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