GB/T 46580-2025 Test method for air-purification performance of photocatalytic materials and products—Removal of formaldehyde

Scope

This document describes a test method for determining the air purification performance of materials containing photocatalysts or with photocatalytic coatings (usually composed of semiconductor metal oxides such as titanium dioxide or other ceramic materials) under continuous exposure to simulated air pollutants and long-wave ultraviolet (UV) radiation. This document is applicable to flat, thin, and panel-type building materials, as well as structured filtration materials such as honeycomb, woven, and non-woven fabrics, and plastic or paper materials containing ceramics and composites. This document is not applicable to powdered or granular photocatalytic materials. The test method adopted in this document is suitable for detecting the air purification performance of photocatalytic materials, but not for measuring other properties of photocatalytic materials (such as the degradation of pollutants in water, self-cleaning, anti-fogging, or antibacterial properties).

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