Affiliation:
1. Bu-Ali Sina University: Bu Ali Sina University
2. Bu Ali Sina University Faculty of Chemistry
Abstract
Abstract
Bimetallic-organic framework (Fe, Cu)/carbon nanotubes as a novel heterogeneous catalyst prepared through a simple and efficient solvothermal method has been utilized in Fenton-like process for the degradation of acid orange 7 (AO7). The response surface methodology (RSM) based on the five-level central composite design (CCD) has been employed for investigation the interaction between four effective variables including pH, H2O2 concentration, catalyst dose and reaction time. The results of optimization revealed that maximum AO7 degradation efficiency (92.76%) was attained at the optimum conditions of pH=3.8, H2O2 concentration = 25 mM, reaction time=23 min and catalyst dose=237.5 mg L-1. Interestingly, it was found that in addition to the role of Fe and Cu species on the surface of Fe0.67Cu0.33(BDC)@CNT, the surface oxygen-functional groups on the CNT leads to faster Fe(III)/Fe(II) cycling and efficient performance over a wider pH range. Furthermore, five sequential cycles confirmed the reusability of Fe0.67Cu0.33(BDC)@CNT catalyst. The concluding remarks of this study provide beneficial results for developing and utilizing advanced MOF-based catalysts for efficient environmental remediation.
Publisher
Research Square Platform LLC