Floating atmospheric particulate pollutant trapping and photocatalytic degradation device

By integrating photocatalytic degradation and radiation cooling self-cleaning functions, the floating device solves the problems of dependence on external energy and lack of self-cleaning in existing technologies, achieving low energy consumption and continuous and stable particulate matter purification effect, which is suitable for open water.

CN122230451APending Publication Date: 2026-06-19HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Filing Date
2026-04-23
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

Existing atmospheric particulate matter removal devices rely on external energy input and lack self-cleaning capabilities, resulting in a decline in long-term operating efficiency and making them unsuitable for air purification in open water areas.

⚗Method used

Design a floating device that integrates atmospheric particulate matter moisture absorption and aggregation capture, titanium dioxide photocatalytic degradation, and radiation cooling self-cleaning functions. Driven by solar energy, it achieves automatic day-night switching through liquid crystal elastomers and spiral springs, realizing photocatalytic degradation and self-cleaning.

🎯Benefits of technology

It achieves low-energy consumption and continuous and stable particulate matter purification, is suitable for open water, improves particulate matter capture efficiency and achieves self-cleaning, and is suitable for environments such as streams and reservoirs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a floating atmospheric particulate pollutant capture and photocatalytic degradation device, belonging to the field of air purification technology. The device includes a base, a central shaft, and blade assemblies. The base has a buoyancy structure and a water storage cavity, allowing it to float on water. The central shaft is vertically mounted on the base and communicates with the water storage cavity. Its surface is covered with a radiation-absorbing film, which heats the water in the water under sunlight to generate water vapor, promoting the hygroscopic aggregation and sedimentation of particulate pollutants in the air. The blade assemblies are arranged radially around the central shaft. The upper surface of the blades is covered with a photocatalytic film and a reflective part. The photocatalytic film degrades the organic components in the deposited particulate pollutants under ultraviolet light, and the reflective part reflects the remaining light back to the central shaft to enhance photothermal utilization efficiency. The lower surface of the blades is covered with a radiation-cooling film, which condenses water at night through radiation, achieving surface self-cleaning. The blades are driven by a liquid crystal elastomer and a spiral spring to achieve day-night rotation switching. This invention requires no external energy input and integrates particulate pollutant capture, degradation, and self-cleaning functions, making it suitable for air purification in open aquatic environments.
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