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二氧化钛是一种应用广泛、价格便宜的材料,通常所用TiO_2颗粒都在微米量级以上,且杂质较多,常用于涂料、研磨剂、甚至牙膏、化妆品等。由于它具有半导体特性,所以用途更加广泛,利用它制成的氧敏、湿敏传感器,目前已得到广泛应用.TiO_2还是一种很好的催化剂,可以通过它的光辅助催化作用破坏各种有机染料,对解决日益严重的有机染料污染提供有效的处理方法。早在70年代,自从Fujishima和Honda利用它来进行光电解水以来,其在光电化学电池方面的应用也倍受人们的关注。近年来,随着纳米材料科学的迅速发展,人们发现纳米TiO_2在光辅催化降解方面的作用更加明显,特别是1991年Gratzel所领导的研究小组,把纳米晶体TiO_2多孔膜,应用于光电化学太阳能电池上取得了突破性进展,目前,他们又把TiO_2多孔膜作为一个电极,应用于锂蓄电池中,制成Li/LiCF_3SO_3+PC/TiO_2蓄电池,获得成功。
Titanium dioxide is a widely used and cheap material. Usually TiO 2 particles are all on the order of microns with more impurities. They are commonly used in coatings, abrasives, toothpastes and cosmetics. Because of its semiconducting properties, it is more widely used, and the oxygen-sensing and moisture-sensitive sensors made of it have been widely used at present.TiO_2 is also a good catalyst that can destroy all kinds of organic Dyes, to solve the increasingly serious pollution of organic dyes to provide effective treatment. As early as 70 years, since Fujishima and Honda use it to carry out photoelectrochemical water, its application in the photoelectrochemical cell also attracted much attention. In recent years, with the rapid development of nanomaterials science, it has been found that the role of nano-TiO 2 in photocatalytic degradation is more obvious. In particular, the research team led by Gratzel in 1991 used nanocrystalline TiO 2 porous films for photoelectrochemical solar energy The breakthrough has been made on the battery. At present, they also use the porous TiO_2 membrane as an electrode in a Li-ion battery to make a Li / LiCF_3SO_3 + PC / TiO_2 battery for success.