材料期刊网

人一生中约90％的时间在室内度过，因此室内空气质量状况与人体健康息息相关。近年来，随着经济的快速发展，我国室内空气质量污染状况越来越严重，已成为影响人们健康的一大杀手，成为建设稳定和谐社会的制约因素。我国现阶段室内环境中主要的气态污染物是甲醛、苯系物和氨气，对人体健康带来极大危害。本研究针对上述污染物的有效去除，进行了新型高效、低成本催化净化材料和相关技术的研制和开发。一方面，研制了一种室温催化氧化甲醛的Pt基催化剂，并实现了相关技术的产业化应用；第二方面，研制出了针对室内苯系物净化的低温吸附?原位升温催化净化材料和方法；第三方面，研制了系列性能优异的室温光催化氧化氨气催化材料，并探讨了其高活性机制。本研究结果对于有效解决我国室内空气污染，改善工作环境，保护人体健康具有重要的的社会和环境意义。

It was reported that for a person about 90% of the time was spent in indoors environment, therefore, the indoor air quality has big effect on people′s health. Recently, the indoor pollution is getting worse in China, and the indoor air pollution control is gaining a lot of attention. Formaldehyde ( HCHO) , BTX ( Benzene, Toluene, Xylene) and NH3 are three major indoor air pollutants which poses the serious health risk to people. In this work, we carried out the study of catalytic oxidation of these indoor air pollutants. First, we developed a novel Pt?based catalyst with high dispersed Pt species for ambient HCHO destruction. Without the need of any energy ( such as photon, heat, etc) , HCHO could be catalytically decomposed to H2 O and CO2 at room temperature over this Pt?based catalyst. Also, we set up a new type of indoor air cleaner based on the Pt?based catalyst, realizing the industrialization of the above basic research results. Second, we developed the efficient catalysts for the oxidation of BTX at low temperature and the according adsorption?oxidation method for indoor BTX removal. Third, we developed a series catalytic material for the photo?catalytic oxidation of ammonia and also elucidated the structure?activity relationships. The effort of this work will greatly contribute to the improvement of the indoor air quality in China.