Preparation of solar thermal conversion materials with strong near-infrared light absorption and their application in degradation of organic pollutants

CN119349693BActive Publication Date: 2025-09-23HEFEI UNIV OF TECH
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Patent Information

Application Number
CN202411699713.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-26
Publication Date
2025-09-23
Estimated Expiration
2044-11-26

AI Technical Summary

Technical Problem

Existing SMD technology lacks efficient photothermal materials to maximize the use of solar energy to generate heat, resulting in low solar energy utilization, and PMS advanced oxidation technology may introduce sulfates and toxic byproducts when treating wastewater.

Method used

Fe3O4 nanosheets with strong near-infrared light absorption were prepared and loaded onto PVDF membrane to form Fe3O4/PVDF composite distillation membrane. Combined with PMS advanced oxidation technology, PMS was activated by light to produce active substances to remove organic pollutants.

Benefits of technology

It improves the utilization rate of solar energy and the degradation capacity of organic pollutants, realizes efficient sewage purification and fresh water recovery, and avoids the introduction of sulfates and toxic by-products.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses the preparation of a solar thermal conversion material with strong near-infrared light absorption and its application in the degradation of organic pollutants. The present invention first prepares an oxidative precursor FeOOH and calcines it in a nitrogen atmosphere to generate Fe3O4 nanosheets; then, the Fe3O4 nanosheets are loaded onto the surface of a PVDF membrane by mixing a binder to obtain a Fe3O4 / PVDF composite distillation membrane. Because the Fe3O4 nanosheets have strong absorption in the visible and near-infrared regions, the prepared Fe3O4 / PVDF composite distillation membrane has strong photothermal performance and a high membrane freshwater flux. Combining the Fe3O4 / PVDF composite distillation membrane with a solar-driven PMS to treat sewage can achieve efficient removal of organic pollutants in water and freshwater recovery, and is expected to be applied to actual sewage purification.
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Citation Information

Patent Citations

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