Synthesis, characterization, and photocatalytic degradation activity of core/shell magnetic nanocomposites (Fe3O4@SiO2@Ag2WO4@Ag2S) under visible light irradiation

被引：35

作者：

Jabbar, Zaid H. ^{[1
]}

Ebrahim, Shahlaa Esmail ^{[1
]}

机构：

[1] Univ Baghdad, Coll Engn, Environm Engn Dept, Baghdad, Iraq

来源：

OPTICAL MATERIALS | 2021年 / 122卷

关键词：

Photocatalytic degradation; Methylene blue dye; Fe3O4@SiO2@Ag2WO4@Ag2S  photocatalyst; Core; shell MNPs; Visible light; Wastewater; Heterogeneous nanostructures; BISPHENOL-A; METHYLENE-BLUE; THERMAL-DECOMPOSITION; FACILE SYNTHESIS; HETEROJUNCTION; DYE; NANOPARTICLES; MECHANISM; KINETICS; ORANGE;

D O I：

10.1016/j.optmat.2021.111818

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel magnetic Fe3O4@SiO2@Ag2WO4@Ag2S core/shell heterostructure was synthesized through a multistep route. The photocatalytic degradation efficiency of Fe3O4@SiO2@Ag2WO4@Ag2S photocatalysts has been investigated through batch photocatalytic degradation experiments of methylene blue (M.B) dye under visible light irradiation. The synthesized photocatalysts were characterized using different techniques like XRD, VSM, UV-DRS, FE-SEM, and TEM. It can be revealed that the Fe3O4@SiO2@Ag2WO4@Ag2S sample shows enhanced photocatalytic degradation efficiency (99.9% after 60 min of irradiation time) than that of Fe3O4@SiO2@Ag2WO4. This enhanced photocatalytic degradation efficiency of Fe3O4@SiO2@Ag2WO4@Ag2S due to the synergistic effects of Fe3O4@SiO2 core, Ag2WO4, and Ag2S species. In addition, the narrow bandgap energy of the final Fe3O4@SiO2@Ag2WO4@Ag2S heterostructure. The effects of different parameters, including photocatalyst dose, initial M.B concentration, initial pH, and hydrogen peroxide concentration, were also investigated. The reaction kinetics of M.B dye degradation was investigated to better compare the photocatalytic removal efficiency of all photocatalysts. The recyclability study showed that reusable magnetic photocatalysts are highly stable and can be used to remove a wide range of dye pollutants from wastewater.

引用

页数：12

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