新能源进展
新能源進展
신능원진전
Advances in New and Renewable Enengy
2015年
3期
239-244
,共6页
限域效应%光解水制氢%TiO2纳米管%Fe2O3
限域效應%光解水製氫%TiO2納米管%Fe2O3
한역효응%광해수제경%TiO2납미관%Fe2O3
confinement effect%water splitting towards hydrogen production%TiO2 nanotubes%Fe2O3
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 TiO2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。
通過真空?超聲輔助的等體積浸漬法製備瞭TiO2納米管限域Fe2O3催化劑，攷察瞭其可見光分解水製氫性能。由于 TiO2納米管的限域效應，導緻 Fe2O3顆粒減小，分散度提高，能隙增大，光生載流子得到有效分離，提高瞭其光解水製氫活性。
통과진공?초성보조적등체적침지법제비료TiO2납미관한역Fe2O3최화제，고찰료기가견광분해수제경성능。유우 TiO2납미관적한역효응，도치 Fe2O3과립감소，분산도제고，능극증대，광생재류자득도유효분리，제고료기광해수제경활성。
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.
