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

作者：Senobari Samaneh; Nezamzadeh Ejhieh Alireza^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2018, 196: 334-343.

DOI：10.1016/j.saa.2018.02.043

• CuO-CdS semiconductors
• Nanoparticles
• Methylene blue
• Photocatalysis
• Clacination temperature

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 degrees C for 2 h) 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: C-MB: 1 mg L-1, pH 5, 80 min irradiation time and 0.8 g L-1 of the CuO200/2h-CdS catalyst. The chemical oxygen demand (COD) confirmed about 83% of MB molecules can be mineralized at the optimum conditions.

• 出版日期2018-5-5