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过渡金属同晶替换的铁氧化物因其具有稳定、高效和可重复利用等特点而被广泛应用于催化处理难降解有机物领域。本文综述了这种新型催化剂的制备过程、过渡金属的同晶替换对催化剂物理化学性质(如比表面积、表面羟基数量、铁离子溶出量及热稳定性)的影响以及促进非均相Fenton反应的催化机制(氧化还原电对结构及氧空位理论)。本文还探讨了这种新型铁氧化物在难降解有机物处理中的应用进展,为后续研究提供了新的思路。
Because of their stable, efficient and reusable characteristics, the transition metal isomorphously substituted iron oxides have been widely used in the field of catalytic treatment of refractory organic matter. This article reviews the preparation of this novel catalyst, the effect of isomorphous substitution of transition metals on the physico-chemical properties (such as specific surface area, surface hydroxyl number, elution amount of iron ions and thermal stability) and the promotion of heterogeneous Fenton reaction Catalytic Mechanism (Redox Electron Pair Structure and Oxygen Vacancy Theory). This article also discusses the application of this new type of iron oxide in the treatment of refractory organic matter and provides a new idea for the follow-up study.