室内空气UV/TiO_2/ACF多相光催化净化研究  

Study on Cleaning Indoor Air by UV/TiO_2/ACF

作　　者：胡俊生[1] 徐文涛[1] 黄宽[1] 刘健[2] 

机构地区：[1]沈阳建筑大学,辽宁沈阳110168 [2]中国石油天然气管道工程有限公司东北分公司,辽宁沈阳110031

出　　处：《辽宁化工》2008年第7期453-456,共4页Liaoning Chemical Industry

基　　金：辽宁省自然科学基金项目(20032006);建设部科技攻关项目(2007-K4-16);沈阳建筑大学省级重点实验室基金项目(HJ-200610)

摘　　要：为了寻求一种简单有效的治理室内空气中气体污染物的方法,将常温吸附和光催化降解两种作用相结合,选用活性炭纤维(ACF)和二氧化钛(TiO2)作为吸附剂和光催化剂,测定在25℃时采用ACF+TiO2混合材料(ACF/TiO2的质量比为1∶0.5)光催化剂的等温去除量随时间的变化规律。结果表明室内气体污染物的初始质量浓度为1 mg/m3时,在紫外光照射下,ACF+TiO2混合材料光催化剂具有较高的活性,甲醛的净化处理效率能达到90%以上。只要适当延长反应时间,有NOx或SO2等存在时,甲醛的净化处理效果也是比较理想的。该方法具有装置简单,能耗少,处理效率高,可以重复利用等优点。In order to find a simple and effective method to remove contaminant from indoor air by the way of combining two functions of adsorption and photo - catalytic degradation. Active Carbon Fiber （ACF） was adopted as an adsorbent and titanium dioxide （TiO2 ） as a photo -catalyst. Using 1 mg/m^3 initial concentration of contaminant,the variation law of the dynamic, isothermal removals of TiO2 ＋ ACF compound （ the mass ratio of ACF to TiO2 is 1 to 0.5） with the time changing was investigated respectively and compared. The results showed that in UV radiation, ACF ＋ TiO2 have their saturated removals, and in UV radiation the removals of formaldehyde are drastically increased. A removal rate more than 80% could be obtained when the photo - catalytic reaction was carried out at room temperature and atmospheric pressure and at a wavelength of 254 nm ultraviolet lamp.

关 键 词：二氧化钛 活性炭纤维 光催化氧化 甲醛 

分 类 号：X506[环境科学与工程—环境工程]