Fabrication and photocatalytic property of magnetic NiFe2O4/Cu2O composites

被引：50
|
作者：
He, Zuming [1 ]
Xia, Yongmei [2 ]
Tang, Bin [1 ]
Su, Jiangbin [1 ]
机构：
[1] Changzhou Univ, Sch Math & Phys, Huaide Sch, Changzhou 213164, Jiangsu, Peoples R China
[2] Jiangsu Univ Technol, Sch Mat & Engn, Changzhou, Jiangsu 213001, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2017年 / 4卷 / 09期
基金：
中国国家自然科学基金;
关键词：
NiFe2O4; Cu2O; magnetic materials; photocatalytic activity; mechanism; COMBUSTION SYNTHESIS; DEGRADATION; NANOCRYSTALS;
D O I：
10.1088/2053-1591/aa7cb8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetically separable NiFe2O4/Cu2O composites were successfully synthesized by a two-step method. The samples were characterized by XRD, XPS, SEM and VSM as well as their PL spectra and UV-vis adsorption spectra. The results showed that the NiFe2O4/Cu2O composites were composed of cubic-structured Cu2O and spinel-structured NiFe2O4, were able to absorb a large amount of visible light, exhibited excellent photocatalytic activity under simulated solar light irradiation and could be easily separated by an external magnetic field. The NiFe2O4/Cu2O composites exhibited higher photocatalytic performance than that of a single semiconductor. It was found that the prominently enhanced photocatalytic performance of NiFe2O4/Cu2O composites was ascribed to the effective separation of photo-generated electron-hole pairs and the effective generation of the hydroxyl radical (OH)-O-center dot.
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页数：6
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