Iron oxide-based monolithic photocatalytic foam ceramic based on heterogeneous photo-fenton effect and preparation method and application thereof
By forming a tight chemical bond interface between the Fe2O3 matrix and the photo-Fenton synergistic component, the problems of instability of the photo-Fenton active interface and carrier recombination in Fe2O3-based heterogeneous photo-Fenton monolithic foam ceramics are solved, achieving efficient degradation of emerging pollutants and structural stability, and improving the photocatalytic performance and mechanical properties of Fe2O3-based foam ceramics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- UNIV OF SHANGHAI FOR SCI & TECH
- Filing Date
- 2026-05-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing Fe2O3-based heterogeneous photo-Fenton type monolithic foam ceramics have problems in the application of emerging pollutant degradation, such as unstable construction of photo-Fenton active interface, severe carrier recombination, slow Fe³+→Fe²+ photoreduction rate, insufficient mechanical strength, uncontrollable iron dissolution, and insufficient degradation efficiency for emerging pollutants.
Through in-situ solid-state reaction during controlled sintering, the photo-Fenton synergistic component forms a tight chemical bond interface with the Fe2O3 matrix at the phase boundary, constructing a multi-active species synergistic system. This enables efficient spatial separation and directional transport of photogenerated carriers, enhances Fe³+/Fe²+ cycling, and ensures structural stability by combining fiber/whisker reinforcement networks. Furthermore, the surface ratio of Fe³+/Fe²+ and the oxygen vacancy concentration are controlled through system design.
It achieves stability and high efficiency of the photo-Fenton active interface, improves photoluminescence efficiency and catalytic degradation efficiency, ensures the structural integrity of the material and iron leaching control in dynamic water treatment environments, and adapts to the efficient degradation of emerging pollutants over a wide pH range.
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