A novel visible-light-driven ternary magnetic photocatalyst MnxZn1-xFe2O4/C/CdS: Fabrication, characterization and application

被引：13

作者：

Cheng, Yong ^{[1
]}

Wu, Tingzeng ^{[1
]}

Xu, Longjun ^{[1
]}

Liu, Chenglun ^{[1
,2
]}

Jiang, Zao ^{[1
]}

Zhang, Qiyuan ^{[1
]}

Zou, Yi ^{[1
]}

Chen, Yan ^{[1
]}

Li, Jingya ^{[1
]}

Liu, Xiuzhu ^{[1
]}

机构：

[1] Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2021年 / 262卷 / 262期

关键词：

MnxZn1-xFe2O4/C/CdS; Magnetic photocatalyst; Wastewater treatment; Photocatalytic mechanism; CORE-SHELL; RHODAMINE-B; DEGRADATION; EFFICIENT; NANOPARTICLES; COMPOSITE; NANOCOMPOSITES; NANOHYBRIDS; NANOSHEETS; REDUCTION;

D O I：

10.1016/j.matchemphys.2021.124308

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel composite magnetic photocatalyst MnxZn1-xFe2O4/C/CdS (MCC) was prepared via hydrothermal and chemical precipitation method. This work hopes to provide an operable and simple method for the improvement of toxic photocatalysts with excellent photocatalytic activity. The CdS-based photocatalyst (MCC10) with 10 wt% MnxZn1-xFe2O4/C (MC) magnetic carbon protective layer shows the optimum photocatalytic activity in degradation of Rhodamine B (RhB) under visible light irradiation (lambda >= 420 nm). This nanocomposite exhibits superparamagnetic property with a saturation magnetization of 2.17 emu/g. Besides, it is demonstrated that the ternary magnetic nanocomposite has superior stability and reusability during five recycling experiments. The introduction of the carbon interlayer can restrain the direct contact of the MnxZn1-xFe2O4 and CdS to a great extent, resulting in the increase separation efficiency of the photo-induced electron-hole pairs, photo-corrosion resistance and then highly visible-light-driven photodegradation capability. Moreover, the analysis of the radical scavengers confirmed that center dot O-2(-) is the primary reactive species to cause the degradation of the RhB.

引用

页数：10

共 49 条

[21] Palladium nanoparticles supported on core-shell and yolk-shell Fe3O4@nitrogen doped carbon cubes as a highly efficient, magnetically separable catalyst for the reduction of nitroarenes and the oxidation of alcohols [J].