Preparation of CuO nanoparticles via organometallic chelate for the removal of acid red 57 from aqueous solutions

• DOI: 10.5004/dwt.2021.27067
• Publication Date: 2021-07-29T20:50:32Z
• Authors: Khlood S. Abou-Melha; Gamil A.A. Al-Hazmi; Ismail Althagafi; Reem Shah; Fathy Shaaban; Nashwa M. El-Metwaly; Ashraf A. El-Bindary
• Keywords: Endothermic process; Langmuir adsorption model; Chemisorption

Nanoparticles of copper oxide (CuO) were achieved via thermal treatment for Cu(II) organometallic complex at calcination temperature up to 650°C.CuO nanoparticles that synthesized elucidated by different spectroscopic techniques such as X-ray diffraction, energy-dispersive spectroscopy.CuO accepted scanning electron microscopy analysis its average diameter was from 15 20 nm nanoparticles, and N 2 adsorption-desorption the Brunauer-Emmett-Teller surface area originated be 42.674m g -1 .Studying adsorption acid red 57 (AR57) onto CuO aqueous, evaluate influence pH, initial dye concentration, dosage, temperature, contact time.Practical results clarified potential AR57 improved in acidic instead basic solutions.The kinetics equilibrium data analyzed using common models.These outcomes detect Langmuir isotherm fits with practical obtained a good level.The uptake process followed pseudo-second-order rate expression.The activation energy also evaluated found 30.94kJ mol , indicating is chemisorption.Various thermodynamic limits, ΔG, ΔH, ΔS determined various temperatures constants isotherm.Thermodynamics endothermic spontaneous nature process.