Preparing and evaluating rhodamine B removal ability in aqueous solutions of copper oxide nanoparticles

Tóm tắt

In this paper, nanostructured copper oxide materials were prepared in N’N-dimethylformamide solvent from Cu(NO₃)₂×3H₂O and benzene-1,4-dicarboxylic acid precursors. The obtained copper oxide nanoparticles were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TG/dTG), nitrogen adsorption-desorption isotherms, scanning and transmission electron microscopy (SEM and TEM). At 120°C synthesis, the CuO crystalline phase was mainly formed, while at 180-220°C, the Cu₂O and Cu crystalline phases were also formed in addition to the CuO crystalline phase. The adsorption or degradation ability based on H₂O₂/catalyst system of copper oxide nanoparticles for rhodamine B removal was also evaluated. The results showed that copper oxide nanoparticles had low adsorption capacity for rhodamine B, but high catalytic activity to decompose rhodamine B in aqueous solution with hydrogen peroxide as the oxidizing agent.