摘要
利用管式炉热氧化金属钛片法方便的制备了金红石型TiO2纳米薄膜，并用纳米Au粒子对薄膜电极进行修饰。结果表明，在650℃热氧化30min形成的TiO2薄膜具有最好的光电化学性质，在此条件下形成的薄膜厚度约为2μm，薄膜表面被尺寸大小不等的纳米TiO2棒所覆盖，长为100～600nm，直径为90～100nm。TEM观测结果表明，纳米Au粒子的尺寸为30～50nm，当薄膜电极表面吸附0．37μg/cm^2的纳米Au粒子时光电流可提高约1．4倍。
TiO2 nano-film electrodes were prepared by thermal oxidation of Ti metal sheets in tube furnace. The results showed that the film electrodes oxidized at 650 ℃ for 30 min performed the best photoelectrochemical behavior with thickness of about 2 μm. Many nano-TiO2 stick with the length of 100 nm - 600 nm and the width of 90 nm-100 nm appeared on the surface. The size of Au nanoparticles is 30 nm-50 nm, and the photocurrent of nano-Au/TiO2 electrode had a nearly 1.4-fold enhancement after the modification with Au nanoparticles.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第7期1283-1286,共4页
Rare Metal Materials and Engineering
关键词
热氧化
TIO2
纳米薄膜电极
光电化学
thermal oxidation
TiOz
nano-film electrode
photoelectrochemistry
