Optical properties of MnFe<sub>2</sub>O<sub>4</sub>/reduced graphene oxide nanocomposites

DING Meijie; ZHANG Xudong; WEI Zhiqiang; HUANG Shangpan; JIANG Jinlong

doi:10.13801/j.cnki.fhclxb.20191030.002

Volume 37 Issue 7

Aug. 2020

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DING Meijie, ZHANG Xudong, WEI Zhiqiang, et al. Optical properties of MnFe2O4/reduced graphene oxide nanocomposites[J]. Acta Materiae Compositae Sinica, 2020, 37(7): 1713-1720. doi: 10.13801/j.cnki.fhclxb.20191030.002

Citation:

DING Meijie, ZHANG Xudong, WEI Zhiqiang, et al. Optical properties of MnFe₂O₄/reduced graphene oxide nanocomposites[J]. Acta Materiae Compositae Sinica, 2020, 37(7): 1713-1720. doi: 10.13801/j.cnki.fhclxb.20191030.002

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Optical properties of MnFe₂O₄/reduced graphene oxide nanocomposites

doi: 10.13801/j.cnki.fhclxb.20191030.002

DING Meijie^{1, 2
,},
ZHANG Xudong^2
,,
WEI Zhiqiang^{1, 2
,
,},
HUANG Shangpan^2
,,
JIANG Jinlong^2
,

1.
State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
2.
College of Science, Lanzhou University of Technology, Lanzhou 730050, China

Received Date: 2019-07-18
Accepted Date: 2019-09-24

Available Online: 2019-10-30

Publish Date: 2020-07-15

Abstract

Abstract

The nanoscale spinel structure metal oxide possesses broad application prospect due to its unique crystal structure and band structure. The MnFe₂O₄/reduced graphene oxide (rGO) nanocomposites were synthesized by hydrothermal method, the crystal structure, morphology, element distribution, binding energy and optical properties were characterized by XRD, high-resolution transmission electron microscope (HRTEM), energy dispersive X-ray spectrometer (EDX), FTIR, XPS, Raman spectroscopy (Raman), photoluminescence spectroscopy (PL) and UV-vis diffuse reflection spectroscopy (UV-vis DRS). The results show that the MnFe₂O₄/rGO nanocomposites prepared by this method have cubic spinel structure. The morphology is irregular ellipsoid with uniform particle size. MnFe₂O₄ nanoparticles loaded on the surface of rGO are partially coated with graphene, possessing small particle size and good dispersion. The MnFe₂O₄/rGO nanocomposites exhibit lower recombination efficiency of electron-hole pairs. The graphene has more defects and higher disorder degree. The oxygen-containing groups are partially reduced by polyvinyl pyrrolidone (PVP), and the quantity is greatly reduced. The band gap of MnFe₂O₄/rGO composite is narrower than that of pure MnFe₂O₄, resulting in red shift.
- MnFe₂O₄,
- reduced graphene oxide(rGO),
- microstructure,
- optical performance,
- metal oxide,
- nanocomposite
Long Abstrsct
Innovation Points

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References(32)

References

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