神奇的光催化

Amazing Photocatalysis

光催化反应的原理是当能量大于或等于能带间隙的光照射到半导体光催化剂上时,其价带中的电子将被激发跃迁到导带,在价带上留下空穴,形成电子-空穴对,发生一系列氧化-还原反应。光催化技术是一种高效、安全的环境友好型环境净化技术,有着广阔的发展前景。文章以一个学生的视角,带领读者走进了光催化的神奇世界。

When the semiconductor photocatalyst is irradiated by light with energy greater than or equal to the energy band gap,electronic transition will occur between the valence band and the conduction band to form electron-hole pair,thus,a series of oxidation-reduction reactions will happen.Photocatalysis is an efficient and environment-friendly technology for environmental decontamination,having the potential for a breadth of applications.From the perspective of a student,this article leads readers into the magic world of photocatalysis.