The Unique Fe 3 mo 3 n Structure Bestowed Efficient Fenton-like Performance of the Iron-Based Catalysts: The Double Enhancement of Radicals and Non-Radicals.

Iron-based catalysts have been widely used in Fenton-like water pollution control technology due to their high efficiency, but their practical applications have been limited by complex preparation conditions and strong blockage of Fe 2+ /Fe 3+ cycle during the reaction. In this study, a new iron-molybdenum bimetallic carbon-based catalyst is designed and synthesized using cellulose hydrogel for adsorption of Fe and Mo bimetals as a template, and the effective iron cycle in water treatment was realized. The integrated materials (Fe 2.5 Mo@CNs) with "catalytic/co-catalytic" performance has higher Fenton-like activation properties and universality than the equivalent quantity iron-carbon based composite catalyst (Fe@CNs). Through the different characterization methods, experimental verifications and theoretical calculations show that the unique Fe 3 Mo 3 N structure promotes the adsorption of persulfate (PS) and reduces the energy barrier of the reaction, further completing the double enhancement of radicals (such as SO 4 · - ) and non-radicals ( 1 O 2 and electron transport process (ETP)). The integrated "catalytic/co-catalytic" combined material is expected to provide a new promotion strategy for Fenton-like water pollution control. This article is protected by copyright. All rights reserved.