负载织物对纳米TiO_2光催化剂净化氨气性能的影响

制备了纳米光催化剂悬浮液,借助后整理工艺对3种织物进行负载加工,并利用X射线衍射仪(XRD)和扫描电镜(SEM)等对其进行了表征.通过自行设计的小型环境舱和光催化反应器重点考察了棉机织物、涤纶机织物和涤/棉混纺机织物对纳米光催化剂净化氨气性能的影响,并比较了在不同负载织物表面上纳米光催化剂的活性.结果表明,负载纳米光催化剂的棉织物的氨气净化性能高于负载纳米光催化剂的涤纶织物和涤/棉混纺织物的氨气净化性能.在负载Ag?TiO2光催化剂的条件下,负载涤纶织物和涤/棉混纺织物对氨气的净化性能有所加强.

改性吸附剂用于室内氨气净化器的现场评价试验

现代建筑物普遍存在室内空气污染现象，氨气是其中具有代表性的一种污染物。本试验是在室内氨气净化技术的研究基础上，以改性吸附剂做净化材料，对ＢＬＫ型室内氨气净化器进行现场试验，结果表明：ＢＬＫ氨气净化器对氨气的净化效率大于９５％，并且该装置在１７ｍ～３的封闭空间中运转２ｈ后，室内的氨气浓度由１０．２ｍｇ／ｍ～３降至低于０．５ｍｇ／ｍ～３。经过长时间的跟踪试验，得知在不断释放出氨气的室内污染环境中，该净化器的滤芯使用周期可以达到５个月。

Research on indoor air pollution of newly decorated buildings in Chongqing

The investigation of indoor-air quality in newly built and newly decorated residences in Chongqing revealed that the average concentration of formaldehyde and ammonia in these residences exceeded the upper limits of the standard. The situation of indoor air pollution varied with the type of rooms. The results of investigation show that the indoor-air pollutants caused by decoration work should not be ignored anymore.