摘要
通过真空-超声辅助的等体积浸渍法制备了TiO2纳米管限域Fe2O3催化剂,考察了其可见光分解水制氢性能。由于Ti O2纳米管的限域效应,导致Fe2O3颗粒减小,分散度提高,能隙增大,光生载流子得到有效分离,提高了其光解水制氢活性。
A novel confinement catalyst, Fe2O3 encapsulated in TiO2 nanotubes （TNTs）, was prepared by vacuum-assisted impregnation. Its photocatalytic activity towards hydrogen production under visible light illumination was evaluated. Fe2O3 confined within TNT has the high dispersion, the smaller particle with larger bandgap compared with the catalyst loaded on the outside surface. And it exhibits enhanced photocatalytic activity for hydrogen evolution. It is attributed to the due to the effective separation of the photogenerated carriers as a result of the spatial confinement effect of TiO2 nanotube.
出处
《新能源进展》
2015年第3期239-244,共6页
Advances in New and Renewable Energy
基金
广州市科技计划项目(2013J4300035)
广东省科技计划项目(2013B050800002)
广东省水与大气污染防治重点实验室基金项目(2011A060901002)
关键词
限域效应
光解水制氢
TIO2纳米管
FE2O3
confinement effect
water splitting towards hydrogen production
TiO2 nanotubes
