Intercalation of iron oxide in layered H2Ti4O9 and H4Nb6O17: Visible-light induced photocatalytic properties

被引：90

作者：

Sato, T ^{[1
]}

Yamamoto, Y ^{[1
]}

Fujishiro, Y ^{[1
]}

Uchida, S ^{[1
]}

机构：

[1] TOHOKU UNIV, INTERDISCIPLINARY RES CTR, SENDAI, MIYAGI 98077, JAPAN

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1996年 / 92卷 / 24期

关键词：

D O I：

10.1039/ft9969205089

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

H2Ti4O9/Fe2O3 . nH(2)O and H4Nb6O17/Fe2O3 . nH(2)O nanocomposites containing intercalated Fe2O3 . nH(2)O, particles of <1 nm thickness, were fabricated by the photochemical decomposition of [Fe-3(CH3CO2)(7)(OH). H2O)](+) incorporated in the interlayer of H2Ti4O9 and H4Nb6O17. Both nanocomposites were capable of hydrogen evolution to the extent of 8.1-8.7 cm(3) over 5 h, following irradiation with visible light (lambda > 400 nm) from a 450 W Hg lamp in the presence of Na2SO3 as a sacrificial donor. The hydrogen production activity of these nanocomposites was superior to that of unsupported Fe2O3 . nH(2)O. The hydrogen production was enhanced to 11.3-13.6 cm(3) over 5 h by doping Pt together with Fe2O3 . nH(2)O in the interlayer. Hydrogen evolution was linear with time with the niobate system being slightly more efficient.

引用

页码：5089 / 5092

页数：4

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