Iron Carbon Catalyst Initiated the Generation of Active Free Radicals without Oxidants for Decontamination of Methylene Blue from Waters

In conventional oxidation technologies for treatment of contaminated waters, secondary pollution the aqueous environment often occurs because additional oxidants generated during process. To avoid this problem, Fe/NG catalyst composites without additives were developed in study decontamination methylene blue (MB) from waters. The catalyst, composed carbon nitride and iron chloride (FeCl3·6H2O), was prepared by high temperature pyrolysis. It is an exceptionally efficient, recoverable, sustainable degradation organic matter. morphological characteristics, chemical structure, surface properties investigated. exhibited MB removal efficiency (100%) within 30 min under ambient dark conditions. experiments indicated that effect also applicable most acid–base conditions (pH = 2–10). characterization results using electron spin resonance analysis intermediate products demonstrated free radicals such as ·OH ·O2? produced heterogeneous system, which resulted efficiency. Moreover, catalysis reaction reducing substances, triggering micro-electrolysis to spontaneously develop a microcurrent, assisted MB. This demonstrates feasibility catalysts generate active species degrading pollutants at normal temperature, providing attractive approach treating organic-contaminated