Improved magnetic, optical, electrochemical, and structural properties of copper ferrite through the optimized addition of samarium dopant using the co-precipitation method

被引：4
|
作者：
Masunga, Ngonidzashe [1 ]
Mamba, Bhekie B. [1 ,2 ]
Kefeni, Kebede K. [1 ]
机构：
[1] Univ South Africa, Inst Nanotechnol & Water Sustainabil, Coll Sci Engn & Technol, Florida Sci Campus, Roodepoort, South Africa
[2] Natl Ctr Int Joint Res Membrane Sci & Technol, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2023年 / 296卷
关键词：
Samarium doped copper ferrite; Saturation magnetization; Effective charge separation; Superparamagnetic; Low bandgap; COBALT FERRITE; NANOPARTICLES; DEGRADATION; ZN; PHOTOCATALYST; HYDROGEN; TRANSFORMATION; NANOCOMPOSITE; CONSTRUCTION; PERFORMANCE;
D O I：
10.1016/j.mseb.2023.116662
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
For the feasible application of photocatalysis technology at an industrial scale, demand for visible-light-driven photocatalysts with excellent superparamagnetic properties for easy separation has soared. In this work, the magnetic, optical, electrochemical, and structural properties of copper ferrite nanoparticles were improved by optimizing the amount of Sm dopant (SmxCuFe2-xO4, where x = 0, 0.03, 0.06, 0.09, 0.12, 0.15) added during synthesis. Sm-CF-0.06 was found to be the optimized synthesized material as it shows high crystallinity (30.9 nm) and saturation magnetisation (52.6 emu/g) which was accompanied by small coercivity (58.5 Oe) and remanent magnetisation (6.13 emu/g). In addition, Sm-CF-0.06 exhibited faster movement of electrons on the surface of the material and demonstrated effective charge separation of photo-generated electrons and holes as observed from cyclic voltammograms and Nyquist plots respectively. The synthesized materials exhibited superparamagnetic properties and their bandgap was found to be in the range of (1.56-1.62 eV) which gave them an edge for separation using external magnets and allow the utilizing abundant visible light, respectively. Lastly, the structural properties, surface morphology, internal structure, purity, and porosity of the synthesized materials were fully evaluated.
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页数：11
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