Fabrication and Application of RuO2@Co3O4 Nano Sorbent to Eradicate Cobalt ions (II) from Synthetic Wastewater
摘要
The current paper focuses on the production and utilization of RuO2@Co3O4 nanosorbent to remove Co (II) ions from synthetic wastewater. The synthesized nanosorbent, RuO2@Co3O4, was subjected to characterization using various analytical techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR). The transmission electron microscopy (TEM) analysis confirmed the presence of nanoscale particles. The estimation was conducted to assess the influence of the concentration of Co (II) ions, solution pH, and contact time. The adsorption of Co (II) ions was observed to conform to a pseudo-second-order kinetic model. Several isotherm parameters were examined, and the utilization of the standard deviation and chi-square test established the most suitable isotherm. The Langmuir isotherm was determined to be the most appropriate model for the adsorption of Co (II) ions. In addition, the Langmuir adsorption capacity of the RuO2@Co3O4 nanosorbent was found to be 210 mg.g−1. The efficiency of the RuO2@Co3O4 nanosorbent in adsorbing Co (II) ions was observed to be significant in the presence of salt.