Photocatalytic performance of rod-shaped copper oxides prepared by spin coating
- Author(s): Hassan Koohestani 1
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View affiliations
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Affiliations:
1:
Faculty of Materials and Metallurgical Engineering , Semnan University , Semnan , Iran
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Affiliations:
1:
Faculty of Materials and Metallurgical Engineering , Semnan University , Semnan , Iran
- Source:
Volume 14, Issue 3,
06
March
2019,
p.
339 – 343
DOI: 10.1049/mnl.2018.5447 , Online ISSN 1750-0443
Copper oxides (CuO and Cu2O), having narrow bandgap and a variety of chemophysical properties, are attractive in many fields such as solar cells, energy conversion, optoelectronic devices, and catalyst. In this work, these copper oxides are synthesised via co-precipitation method and spin coating and annealed in various temperatures. Then, samples are characterised by X-ray powder diffraction, scanning electron microscopy (SEM) and ultraviolet–visible light absorption spectra. From the SEM images of sample annealed at 450°C, the diameter and lengths range of the rod-shaped particles were 30–70 and 200–300 nm, respectively. Finally, to investigate the photocatalytic activity of oxides, methyl orange (MeO) degradation by copper oxides under UV irradiation was studied. Pure CuO with bandgap energy 1.37 eV and specific surface areas 91.3 m2/g had a greater efficiency of MeO degradation value 87.8%.
Inspec keywords: semiconductor growth; energy gap; optical constants; photochemistry; nanofabrication; spin coating; visible spectra; precipitation (physical chemistry); ultraviolet spectra; annealing; scanning electron microscopy; copper compounds; catalysis; nanoparticles; X-ray diffraction; semiconductor materials; catalysts
Other keywords: temperature 450.0 degC; specific surface areas; CuO; narrow bandgap; semiconductor materials; UV irradiation; energy conversion; scanning electron microscopy; optical constants; X-ray powder diffraction; photocatalytic performance; spin coating; co-precipitation method; rod-shaped copper oxides; bandgap energy; ultraviolet–visible light absorption spectroscopy; chemophysical properties; Cu2O; methyl orange degradation; annealing
Subjects: Nanometre-scale semiconductor fabrication technology; Oxide and ferrite semiconductors; Visible and ultraviolet spectra of other nonmetals; Optical constants and parameters (condensed matter); Photolysis and photodissociation by IR, UV and visible radiation; Optical properties of other inorganic semiconductors and insulators (thin films, low-dimensional and nanoscale structures); Other methods of nanofabrication; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Heterogeneous catalysis at surfaces and other surface reactions; Other heat and thermomechanical treatments
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