Mn-N codoped TiO2 nanotubes with enhanced photocatalytic activity: An integrated experimental and theoretical investigation

被引：0
作者：
Shan, Shifan [1 ,2 ]
Liu, Zhoulin [3 ]
Tian, Jie [1 ,2 ]
Sha, Jianchun [1 ,2 ]
Li, Lianhui [1 ,2 ]
Yang, Yiqiang [1 ,2 ]
Zhang, Zhiqiang [1 ,2 ]
机构：
[1] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China
[2] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
[3] Harbin Inst Technol Shenzhen, Sch Sci, Shenzhen 518055, Peoples R China
来源：
MATERIALS LETTERS | 2024年 / 373卷
基金：
中国国家自然科学基金;
关键词：
Nanocrystalline materials; Mn-N codoped; Density functional; Photocatalysis; Crystal growth;
D O I：
10.1016/j.matlet.2024.137074
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The efficient enhancement of the photocatalytic activity of TiO2 nanotubes under visible light remains a significant challenge in current research. This study, employing density functional theory, systematically investigates the impact of Mn-N co-doping on the morphology, electronic structure, and optical properties of Hydrothermal composite treatment of TiO2 nanotubes. The successful introduction of Mn-N co-doping into the nanotubes induces impurity energy levels, reducing the bandgap while enhancing absorption capability and reflectance of visible light. Mn and N are partially incorporated into the TiO2 lattice, resulting in a reduction of the bandgap from 2.98 eV to 2.81 eV. The degradation efficiency of methylene blue solution under UV light and visible light is improved by approximately 31 % and 25 %, respectively.
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页数：4
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