Structures and photocatalytic activity of α-Fe2O3@TiO2 core-shell nanoparticles

被引：14
作者：
Niu, Yongan [1 ]
Li, Manyuan [1 ]
Jia, Xueyan [2 ]
Shi, Zihang [2 ]
Liu, Haixiong [2 ]
Zhang, Xin [2 ]
机构：
[1] Shenyang Univ Chem Technol, Sch Mat Sci & Engn, Shenyang 110142, Peoples R China
[2] Shenyang Univ Chem Technol, Sch Chem Engn, Shenyang 110142, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2022年 / 345卷
基金：
中国国家自然科学基金;
关键词：
alpha-Fe2O3; TiO2; 3D flower-like; Photocatalytic activity; TIO2; NANOCOMPOSITES; DEGRADATION; FABRICATION; COMPOSITES; EFFICIENT;
D O I：
10.1016/j.ssc.2022.114683
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We successfully fabricated the ellipsoidal alpha-Fe2O3@TiO2 nanoparticles (NPs) by modifiedStober method and 3D flower-like alpha-Fe2O3@TiO2 NPs by solvothermal method, using tetrabutyl titanate (TBOT) as the titanium precursor. These as-obtained alpha-Fe2O3@TiO2 NPs were calcined at 500 ?C, and anatase TiO2 were uniformly deposited on surface of alpha-Fe2O3 cores. Due to the heterojunction effects, alpha-Fe2O3@TiO2 NPs exhibited much stronger optical absorption in ultraviolet-visible (UV-Vis) district. For degradation of Rhodamine B (RhB), 3D flower-like alpha-Fe2O3@TiO2 NPs displayed much higher photocatalytic activity than that of pure alpha-Fe2O3 and TiO2 NPs. Finally, the photocatalytic mechanism of alpha-Fe2O3@TiO(2 )NPs was proposed and explained.
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页数：4
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