Thermal Oxidation and SILAR Method to Prepare CuO/CdS Composite Nanostructure and Its Enhanced Photocatalytic Properties

In this study, a series of CuO/CdS composites were synthesized by thermal oxidation and successive ionic layer adsorption and reaction (SILAR). The as-prepared CuO/CdS composites were investigated by x-ray diffraction (XRD), field emission high-resolution scanning electron microscopy (FESEM) and ene...

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Bibliographic Details
Published in:Journal of electronic materials 2021-08, Vol.50 (8), p.4762-4769
Main Authors: Yang, Yuxiao, Li, Jiangchun, Jiang, You, Wang, Boyou, Zhang, Yubo, Wang, Tinglan, Xiong, Xiaobo, Wang, Yongqian
Format: Article
Language:English
Subjects:
Catalytic activity
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composite materials
Copper oxides
Electronics and Microelectronics
Emission analysis
Field emission microscopy
Instrumentation
Light irradiation
Materials Science
Methylene blue
Morphology
Nanowires
Optical and Electronic Materials
Original Research Article
Oxidation
Photocatalysis
Photodegradation
Solid State Physics
Ultraviolet radiation
X-ray diffraction
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Summary:In this study, a series of CuO/CdS composites were synthesized by thermal oxidation and successive ionic layer adsorption and reaction (SILAR). The as-prepared CuO/CdS composites were investigated by x-ray diffraction (XRD), field emission high-resolution scanning electron microscopy (FESEM) and energy-dispersive spectrometry. Their photocatalytic activity was investigated by monitoring the degradation of methylene blue (MB) under ultraviolet and visible light irradiation. The XRD pattern indicated that the precursor was cubic-phase CuO and Cu 2 O. FESEM results indicate that changes in annealing time and temperature have an effect on morphology, but the nanowire structures are preserved. The growth mechanism of the CuO nanowires is discussed in detail. Furthermore, the photocatalytic degradation rate of the MB, determined using an ultraviolet-visible spectrophotometer (UV-vis, UV-2600, Shimadzu), indicates that CdS can significantly improve the absorption of visible light from the sun.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-021-08977-7