摘要
采用环境测试舱模拟可见光下的室内环境,以甲醛气体的光催化降解为探针反应,评价了通过纳米杂化和溶胶-凝胶技术制备的Cu-TiO2纳米晶体对甲醛气体的降解效果。用X射线衍射和紫外-可见分光光谱表征了掺杂纳米TiO2的晶体结构与光学性能。结果表明,Cu-TiO2在可见光源下具有比纯TiO2更好的光催化降解甲醛气体能力,并探讨了其在新型环保建材方面的应用。
Cu-TiO2 nanocrystallite photocatalysts is prepared by nano hybrid technique and sol-gel method. The degradation effect of Cu-TiO2 nanocrystallite photocatalysts on gas formaldehyde is evaluated by the photoeatalytie decomposition of gas formaldehyde in the environmental chamber, which simulating the indoor environment under visible light. The crystal pattern and optical properties of catalysts mixed with nano TiO2 are shown by means of X-ray diffraction and ultraviolet-visible spectra. The resuhs show that Cu-TiO2 has better photocatalytic activities on gas formaldehyde than pure TiO2 under the visible light. Besides, its application as other new environmental protection building material is also discussed.
出处
《新型建筑材料》
北大核心
2009年第9期78-81,共4页
New Building Materials
