一种新型甲醛气体清除材料的实验研究

摘要

A new kind of materials to remove formaldehyde gas was prepared by loading nano-TiO2 on the activated carbon fibre. In process of preparation, the sol-gel method was utilized. Nano-TiO2 was modified by adulterating Fe3+ and sodium dodecyl benzene sulfonate(SDBS). The photocataltic activity of nano-TiO2 was analyzed and the materials'removal ratio of the formaldehyde was tested. The results show that the addition of Fe3+ and SDBS cannot change the crystal structure of nano-TiO2 but improve the light-catalysed activity of nano-TiO2 and that the materials removal ratio of formaldehyde is highest with the addition of 0. 8% Fe3+ and 3% SDBS.%采用溶胶-凝胶法将纳米TiO2负载在活性碳纤维上,制备出一种新型甲醛气体清除材料.在制备中依次掺杂Fe3+和十二烷基苯磺酸钠(SDBS)对纳米TiO2进行改性,研究了纳米TiO2光催化活性的变化,并测试了自制材料的甲醛清除效率.结果表明:Fe3+和SDBS的添加不会改变纳米TiO2的晶型结构,但有利于晶粒的成长和负载膜的光催化活性；添加体积分数分别为0.8％的Fe3+和3％的SDBS时,材料的甲醛清除效率最高.