Nanoparticles of bismuth oxide were successfully synthesized by hydrothermal process which included Bismuth (III) nitrate (Bi(NO3)3.6H2O), sodium hydroxide(NaOH) and Nitric acid(HNO3) without further purification along with ultra-pure water. To investigate the structural, optical, and photocatalytic activity of two samples (1:5) and (1:6) respectively with two different NaOH precipitating agent molar ratios. The prepared nanoparticles were characterized by X-ray diffraction (XRD), UV-Vis’s spectrometer, scanning electron microscope (SEM), Energy-dispersive X-ray spectroscopy (EDAX), Fourier transform infrared spectroscopy (FTIR) and X-ray Photo electron Spectroscopy (XPS). Based on the obtained results the hydrothermally synthesized Bi2O3 NPs exhibit good efficiency to photocatalytic degradation of Methylene blue under the irradiation of LED white light.
Crystalline cubic cerium oxide nano particles have been synthesized from cerium (III) nitrate (Ce (NO3)3.6H2O) and sodium hydroxide by a hydrothermal method. The effect of three different molar ratios of the NaOH precipitating agent on structural, optical, and photo catalytic activity was investigated. The synthesized cerium oxide nano particles were characterized by X-ray diffraction (XRD), a UV–vis spectrometer, scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDAX), Raman spectroscopy and X-ray photo electron spectroscopy (XPS). According to the findings, hydrothermally synthesized cerium oxide NPs have a high efficiency for photocatalytic degradation of methylene blue when exposed to UV light. Environmental water pollution is the major issue of the atmosphere. To get fresh water, humans could search the resources to purify the water in simple way and degradation is the one of the methods to purify salt water.
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