A comprehensive study on the photocatalytic activity of coupled copper oxide-cadmium sulfide nanoparticles

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Samaneh Senobari, Alireza Nezamzadeh-Ejhieh

Abstract

Coupled CdS-CuO nanoparticles (NPs) subjected in the photocatalytic degradation of Methylene blue (MB) aqueous solution. The calcination temperature and the crystallite phase of CuO had a significant role on the photocatalytic activity of the coupled system and CuO200/2h-CdS catalyst (containing CuO calcined at 200°C for 2h) showed the best photocatalytic activity. The coupled system showed increased activity with respect to the monocomponent semiconductors. The prepared catalysts characterized by x-ray diffraction (XRD), scanning electron microscope equipped with energy dispersive X-ray (EDX) analyzer, x-ray mapping, Fourier transform infrared (FTIR) spectroscopy, diffuse reflectance spectroscopy (DRS) and electrochemical impedance spectroscopy (EIS) techniques. The best degradation extent of MB was obtained at: CMB: 1mgL-1, pH5, 80min irradiation time and 0.8gL-1of the CuO200/2h-CdS catalyst. The chemical oxygen demand (COD) confirmed about 83% of MB molecules can be mineralized at the optimum conditions.

Citations

Aug 9, 2020·Environmental Science and Pollution Research International·Narges Omrani, Alireza Nezamzadeh-Ejhieh
Oct 2, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Stephen Sunday Emmanuel, Ademidun Adeola Adesibikan

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