Accelerated $Fe^{III}/Fe^{II}$ redox cycle of Fenton reaction system using $Pd/NH_2$ -MIL-101(Cr) and hydrogen

Abstract

In this paper, a novel improvement in the catalytic Fenton reaction system named $MHACF-NH_2$ -MIL-101(Cr) was constructed based on $H_2$ and $Pd/NH_2$ -MIL-101(Cr). The improved system would result in an accelerated reduction in $Fe^{III}$, and provide a continuous and fast degradation efficiency of the 10 mg $L-1 4$-chlorophenol which was the model contaminant by using only trace level FeII. The activity of $Pd/NH_2$ -MIL-101(Cr) decreased from 100% to about 35% gradually during the six consecutive reaction cycles of 18 h. That could be attributed to the irreversible structural damage of $NH_2$-MIL-101(Cr).