Testing method for performance of photocatalytic air-purifying material

A technology for air purification materials and testing methods, which is applied in material separation, analysis materials, measurement devices, etc., can solve the problems of difficulty in rapid and accurate evaluation of the performance of photocatalytic air purification materials, and achieves the promotion of practical application process, short test period, and test results. Accurate and reliable results
CN105929048AInactive Publication Date: 2016-09-07山东亿康环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
山东亿康环保科技有限公司
Publication Date
2016-09-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a testing method for the performance of a photocatalytic air-purifying material. The testing method comprises the following steps: preparing a sample piece of the photocatalytic air-purifying material and placing the prepared sample piece in an enclosed reaction chamber; irradiating the sample piece with a light source so as to realize pretreatment of the sample piece; introducing a target pollutant with a fixed concentration into the reaction chamber by using a partial pressure method and carrying out dark adsorption on the sample piece; and carrying out a photocatalytic degradation reaction and detecting concentration changes of the target pollutant, a degradation intermediate and a final degradation product, i.e., carbon dioxide, by using a gas chromatographic-mass spectrometric instrument. The testing method is rapid and highly efficient, has accurate and reliable testing results and high testing stability, can simultaneously characterize the adsorption performance and photocatalysis performance of the photocatalytic air-purifying material and the photocatalysis performance of material from the two aspects consisting of the concentration change of the target pollutant and the concentration change of the degradation intermediate, and is beneficial for objective and accurate characterization of the performance of the photocatalytic air-purifying material; thus, the method can promote extensive application of the photocatalytic air-purifying material.
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Description

technical field

[0001] The invention belongs to the technical field of testing material properties, in particular to a testing method for the performance of photocatalytic air purification materials in degrading gas phase pollutants. Background technique

[0002] Photocatalytic materials, especially semiconductor photocatalytic materials such as titanium dioxide, can convert light energy into chemical energy, and have great application prospects in the fields of air purification, sewage treatment, antibacterial deodorization, anti-fog and self-cleaning. With the gradual marketization of photocatalytic technology and the emergence of photocatalytic air purification materials and products, the contradiction of lack of relevant reaction test methods gradually emerged. The relevant regulatory departments and industries cannot accurately analyze and judge the performance of such materials. It is difficult to accurately evaluate the pros and cons of materials. According to the ex...

Claims

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