文档介绍：
单面 Pt 沉积 TiO2 纳米管阵列复合电极光催
化制氢#
潘能乾,廖建军,李丹红,任牧青,林仕伟**
5
10
(海南大学材料与化工学院热带岛屿资源先进材料教育部重点实验室,海口 570228)
摘要:采用阳极氧化法制备得到 TiO2 纳米管阵列电极(TNTs),通过光化学沉积法获得了
沉积 Pt 纳米粒子的 TiO2 纳米管阵列复合电极(Pt/TNTs/Pt)。结合 SEM、EDS、UV-vis 漫
反射吸收光谱以及瞬态光电流测试对样品的形貌、组成及光电性能进行表征,并构建二电极
光电化学池对 Pt 沉积 TiO2 体系中电荷传输特点进行了探讨,证明光生电子能有效迁移至 Pt
纳米粒子上并快速参与析氢反应。根据这一机理设计并制备了单面 Pt 沉积的 TiO2 复合电极
(Pt/TNTs)。光催化制氢实验结果表明,Pt/TNTs 的光催化制氢活性接近 Pt/TNTs/Pt,达到
了 TNTs 的 6 倍。
关键词:光催化;Pt 沉积;TiO2 纳米管阵列;复合电极;氢气
中图分类号:;
15
Photocatalytic Hydrogen Generation by Single Side
Pt-deposited TiO2 Nanotube posite Electrodes
PAN Nengqian, LIAO Jianjun, LI Danhong, REN Muqing, LIN Shiwei
(Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources,
20
25
30
35
School of Material and Chemical Engineering,Hainan University,Haikou 570228)
Abstract: Titanium dioxide nanotube arrays (TNTs) were prepared by anodization. Pt
nanoparticles were assembled on the surface of TiO2 nanotube arrays (Pt/TNTs/Pt) by
photochemical reduction. Microstructure, position and optic-electronic property of
the electrodes were analyzed by means of SEM, EDS, UV-vis diffuse reflectance spectra and
transient photocurrent response. A two-electrode photoelectrochemical cell was constructed to
study the charge transfer property. The results show that photogenerated electrons can transfer to
Pt nanoparticles and