Novel Magnetic Fe3O4/α-FeOOH Nanocomposites and Their Enhanced Mechanism for Tetracycline Hydrochloride Removal in the Visible Photo-Fenton Process

被引:39
|
作者
Huang, Xinyi [1 ]
Zhou, Hui [1 ]
Yue, Xiaojun [1 ]
Ran, Songlin [1 ]
Zhu, Jianhua [1 ,2 ]
机构
[1] Anhui Univ Technol, Anhui Prov Key Lab Met Emiss Reduct, Maanshan 243002, Anhui, Peoples R China
[2] Anhui Univ Technol, Minist Educ, Resources & Met Reduct & Comprehens Utilizat Reso, Maanshan 243002, Anhui, Peoples R China
来源
ACS OMEGA | 2021年 / 6卷 / 13期
基金
中国国家自然科学基金;
关键词
DEGRADATION; OXIDATION; PH; PERFORMANCE; TOXICITY;
D O I
10.1021/acsomega.1c00204
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Magnetic Fe3O4/alpha-FeOOH heterojunction nanocomposites (denoted as Fe-NCs) have been synthesized by a fast one-pot hydrothermal method. The obtained Fe-NCs contain rich micropores with a high surface area of 135.15 m(2)/g. The different phases in the composites can efficiently enhance the visible-light absorption, improving the separation and transfer of photogenerated electron-hole pairs during the photocatalytic reaction. Thus, they show excellent degradation and mineralization of tetracycline (TC) over a wide pH range (5-9) in the visible photoFenton reaction. Especially, the catalyst exhibits the highest adsorption capacity toward TC at a neutral pH, which facilitates the surface reactions of TC with active species. Experiments evidence that the high production of photogenerated holes and superoxide radicals (O-2(center dot-)) in Fe-NCs are favorable to the high catalytic efficiency. Combined with liquid chromatography-mass spectrometry, the possible pathway toward TC degradation was proposed.
引用
收藏
页码:9095 / 9103
页数:9
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