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动态测试法能较好地模拟室内环境温度、相对湿度、空气交换及有害物释放速率等环境条件,能更真实可靠地反映净化材料在室内环境条件下对气态污染物的净化能力。本文通过动态测试法研究了UV/活性炭(AC)/TiO_2光降解苯系物的效率。系统地研究了紫外光直接氧化、AC吸附以及UV/AC/TiO_2光降解苯系物的净化能力,并考察了氧气、相对湿度对UV/AC/TiO_2降解活性的影响。结果表明,在254nm紫外光波长下,适度的氧气含量和湿度环境能显著提高UV/AC/TiO_2降解苯系物的活性。因此,动态测试法能对不同净化材料的净化效率和降解速率进行有效的评价,对建立科学的空气净化器的性能测试方法具有重要的意义。
Dynamic test method can better simulate the indoor environment temperature, relative humidity, air exchange and pest release rate and other environmental conditions, can more truly and reliably reflect the purifying material in the indoor environmental conditions for the purification of gaseous pollutants. In this paper, the efficiency of photodegradation of benzene series by UV / activated carbon (AC) / TiO 2 was studied by dynamic test. The UV-direct oxidation, AC adsorption and UV / AC / TiO 2 photodegradation of benzene series were systematically studied. The effects of oxygen and relative humidity on the degradation of UV / AC / TiO 2 were investigated. The results show that under 254nm UV wavelength, moderate oxygen content and humidity environment can significantly improve the activity of UV / AC / TiO 2 degradation of benzene series. Therefore, the dynamic test method can effectively evaluate the purification efficiency and degradation rate of different purifying materials, and is of great significance for establishing a scientific performance testing method of the air purifier.