The role of lanthanum in improving the visible-light photocatalytic activity of TiO2 nanoparticles prepared by hydrothermal method

被引：5
|
作者：
Han, Minglei [1 ,2 ,3 ]
Dong, Zhiqiang [1 ,2 ,3 ]
Liu, Jiaan [1 ,2 ]
Ren, Guihua [1 ,2 ,3 ]
Ling, Meiqi [1 ,2 ,3 ]
Yang, Xiaodong [4 ]
Zhang, Lianren [1 ,2 ]
Xue, Bing [1 ,2 ,3 ]
Li, Fangfei [1 ,2 ,3 ]
机构：
[1] Jilin Univ, Minist Educ, Key Lab Automobile Mat, 5988 Peoples Ave, Changchun 130025, Peoples R China
[2] Jilin Univ, Dept Mat Sci & Engn, 5988 Peoples Ave, Changchun 130025, Peoples R China
[3] Minist Land & Resources, Open Res Lab Physicochem Testing Methods Funct Mi, Changchun, Peoples R China
[4] Changchun Univ, Sch Sci, 6543 Satellite Rd, Changchun 130022, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2020年 / 126卷 / 12期
关键词：
TiO2; nanoparticles; Lanthanum; Photocatalysts; Hydrothermal method;
D O I：
10.1007/s00339-020-04135-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, the La-doped TiO2 (La-TiO2) nanoparticles with different La content were successfully synthesized by hydrothermal method aiming at enhancing the visible-light photocatalytic performance. The as-prepared photocatalysts were characterized by XRD, BET, TEM, XPS, FT-IR, photocatalytic performance and photo-electrochemical analysis. The experimental results indicate that La doping could suppress the phase transformation and hinder the crystallite growth of TiO2. Compared with other samples, the 1.5% La-TiO2 displays the highest photocatalytic activity under visible light, attributing to the synergic effect of the larger specific surface area and better separation capability of photo-generated holes and electrons. In addition, 1.5% La-TiO2 exhibits the outstanding recycling performance, and the degradation efficiency of the fifth day falls by 6.34% compared with the first day.
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页数：10
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