Studies on Adsorption of Congo red (Acid Red 28) Azodye by Nano Copperoxide

Abstract

Madiha Batool, Farwa Hashmi, Nida Mehboob, Zahid Qureshi and Walid M. Daoush

In this study, stable copper nanoparticles were synthesized by using Aloe barbadensis leaf extracts. The present study tracing of an object is a green synthesis of copper nanoparticles by the interaction of leaf extract and copper salt and its azo dye (congored) degradation efficiency. The characterization of copper oxide nanoparticles were performed by XRD, SEM, FTIR, UV spectroscopy. The XRD analysis showed that average particle size was between 5-30nm by scherrer equation. The shape of the copper nanoparticles was spherical and cubic. The EDX of synthesized nanoparticles confirmed copper content 68%. UV spectrophotometer analysis confirms peak of the copper nanoparticles between 200-400nm. The effect of variables like concentration, time, PH, adsorbent dosage also examined in this present study on % degradation of dye. It was noted that maximum dye removal occured at PH= 4, maximum concentration of adsorbent 1mg/l, maximum time for dye degradation 120 mint. The nanoparticles removed 70% of congored dye from solution at optimum condition of reaction parameters.The kinetics of pseudo second order is followed by adsorption process.The calculated sum of square .012 and r2 =.980 were analyzed. Langmuir isotherm model fit best and straight line graph drawned with r2 value .991 and probability 1.6E-5. This showed that copper oxide nanoparticles have efficient capacity of azo dye degradation.

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