TiO_2纳米粒子膜的表面态性质对光催化活性的影响  

Effect of Surface State Properties of TiO_2 Nanoparticle Film on Its Photocatalytic Activity

作　　者：曹亚安[1] 丁兰[2] 马颖[1] 管自生[1] 谢腾峰[2] 张昕彤 吴志芸[2] 白玉白[2] 李铁津 姚建年[1] 吴越[3] 

机构地区：[1]中国科学院感光化学研究所,北京100101 [2]吉林大学化学系,长春130023 [3]中国科学院长春应用化学研究所,长春130022

出　　处：《高等学校化学学报》1999年第11期1787-1789,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金;中国科学院重大基础研究项目资助

摘　　要：TiO 2 nanoparticle film catalysts with different thicknesses were prepared by plasma enhanced chemical vapor deposition(PECVD) method and the surfaces were subsequently treated by TiCl 4 or O 2 plasma. Two kinds of TiO 2 films with different surface properties were obtained. Their surface microstructures and energy levels of surface states were tested by AFM, XRD, SPS. The photocatalytic activities of the catalysts were determined via photodegradation experiments of phenol. The results demonstrated that photocatalytic activities of samples whose surface was treated by O 2 plasma were greater than those treated by TiCl 4 plasma. Moreover, photodegradation ratio of phenol during the first hour catalyzed by 0.17 μm thickness TiO 2 nanoparticle film was greater than other samples. Especially, the difference of photocatalytic activities of TiO 2 nanoparticle films treated by TiCl 4 or O 2 plasma was respectively explained by energy band theory.TiO 2 nanoparticle film catalysts with different thicknesses were prepared by plasma enhanced chemical vapor deposition(PECVD) method and the surfaces were subsequently treated by TiCl 4 or O 2 plasma. Two kinds of TiO 2 films with different surface properties were obtained. Their surface microstructures and energy levels of surface states were tested by AFM, XRD, SPS. The photocatalytic activities of the catalysts were determined via photodegradation experiments of phenol. The results demonstrated that photocatalytic activities of samples whose surface was treated by O 2 plasma were greater than those treated by TiCl 4 plasma. Moreover, photodegradation ratio of phenol during the first hour catalyzed by 0.17 μm thickness TiO 2 nanoparticle film was greater than other samples. Especially, the difference of photocatalytic activities of TiO 2 nanoparticle films treated by TiCl 4 or O 2 plasma was respectively explained by energy band theory.

关 键 词：纳米粒子膜 PECVD 表面态 二氧化钛 光催化剂 

分 类 号：O643.36[理学—物理化学]