Magnetically separable Ag/AgBr/NiFe2O4 composite as a highly efficient visible light plasmonic photocatalyst

被引：29
作者：
Ge, Ming [1 ,2 ]
Liu, Wei [1 ]
Hu, Xin-Rong [1 ]
Li, Zhen-Lu [1 ]
机构：
[1] North China Univ Sci & Technol, Coll Chem Engn, Tangshan 063210, Hebei, Peoples R China
[2] Hebei Key Lab Photocatalyt & Electrocatalyt Mat E, Tangshan 063210, Hebei, Peoples R China
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2017年 / 109卷
关键词：
Ag/AgBr/NiFe2O4; Heterostructure; Plasmonic photocatalyst; Magnetic separation; Mechanism; DYE; DEGRADATION; PERFORMANCE; PHOTODEGRADATION; FACILE; SYSTEM;
D O I：
10.1016/j.jpcs.2017.05.008
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A magnetic Ag/AgBr/NiFe2O4 plasmonic photocatalyst was firstly prepared by coupling a hydrothermal route with a solvothermal method. The as-synthesized Ag/AgBr/NiFe2O4 was characterized by XRD, XPS, FE-SEM, UV-vis DRS, PL and BET surface area. Under visible light irradiation, the resulting Ag/AgBr/NiFe2O4 exhibited a higher photocatalytic activity for rhodamine B (RhB) degradation compared with Ag/AgBr, which was ascribed to the heterostructured Ag/AgBr/NiFe2O4 and the surface plasmon resonance (SPR) effect of Ag nanoparticles. Moreover, the Ag/AgBr/NiFe2O4 plasmonic photocatalyst can be recovered and recycled by a magnetic field along with good stability. A plausible mechanism is also proposed via active species trapping experiments, which indicating that the superoxide radicals (O-2(-center dot)) are the main reactive oxygen species for RhB degradation in Ag/ AgBr/NiFe2O4 suspension under visible light.
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页码：1 / 8
页数：8
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