With the carrier gas flux rising , the film ' s thickness and the degree of crystallization increase . the band gap decreased little , and the photocatalysed efficiency was enhanced 随着载气流量的增加,薄膜的厚度增加,结晶性能提高,光学带隙变窄,光催化效率增加,亲水性没有明显变化。
In a word , tio2 has a wide application prospect . however it ' s such problems as relaying on ultraviolet radiation , efficiency , and lifetime in tkvs use limit it ' s application 但tio _ 2光催化剂对紫外光的倚赖,限制了它的应用,同时它的催化效率以及使用寿命等问题也影响了它的广泛使用。
For the improvement of photocatalytic properties , the photocatalytic mechanic was studied from a new method and some more important factors influencing the photocatalytic properties was analyzed 为了能够提高光催化效率,了解影响光催化的重要因素,本文最后还从一个新的角度诠释了tio _ 2光催化机理。
With the characteristics such as high catalytic efficiency , high degree of stereoselectivity and mild reaction condition , enzymatic preparation of chiral compounds have became the horspot of research and application in chemical field 酶法合成手性化合物具有催化效率高、立体选择性强、条件温和等优点,已成为目前化工领域研究和应用的热点。
In recent years , it has attracted a great deal of attention that how to improve the photocatalytic activity of tio2 and prepare the films which possess high photocatalytic activity and supre - hydrophylicity 提高tio _ 2的光催化效率,制备既具有高的光催化活性,又具有良好的亲水特性的tio _ 2薄膜,是近年来光化学及光催化领域中研究的热点之一。