کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4762531 | 1362212 | 2017 | 6 صفحه PDF | دانلود رایگان |
- Facile synthesis of 1D CeO2-Cu2O composite nanofibers via electrospinning.
- Composite nanofibers are depicted as promising photocatalyst for degradation of MB.
- CeO2-Cu2O composite nanofibers showed high specific capacitance compared to pristine.
- Composite nanofibers can be applied as future electrode materials for supercapacitors.
The present study describes fabrication and electrochemical classification of one-dimensional CeO2-Cu2O nanofibers for photocatalysis and supercapacitor application. The utilized CeO2-Cu2O composite was prepared by sol-gel electrospinning method using Polyvinylpyrrolidone (PVP), Ce(NO3)3â 6H2O and Cu(CH3COO)2 as precursors. The physicochemical properties of the synthesized samples were characterized using special characterization approaches such as X-ray diffractometer (XRD), energy dispersive X-ray analysis (EDX), electron probe microanalysis (EPMA) and scanning electron microscopy (SEM). As compared to pristine CeO2, the UV-vis spectrum of CeO2-Cu2O composite exhibited the absorption peak which shifted to higher wavelength. The photocatalytic activity results indicated the substantial degradation of MB dye by â¼92% over the surface of CeO2-Cu2O nanocomposite catalyst under visible light illumination. The CeO2-Cu2O composite possessed higher photocatalytic activity and electrochemical capacitance than the pristine samples as supercapacitor electrode materials. The CeO2-Cu2O composite exhibits a specific capacitance of 329.64Â FÂ gâ1 at 5Â mVÂ sâ1, which is higher than that of the pristine CeO2 (192.5Â FÂ gâ1) nanofibers. These results suggest the applicability of fabricated composite nanofibers as visible light active photocatalyst and as electrode material for supercapacitors.
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Journal: Advanced Powder Technology - Volume 28, Issue 1, January 2017, Pages 230-235