H2Ti4O9/Fe2O3·nH2O and H4Nb6O17/Fe2O3·nH2O nanocomposites containing intercalated Fe2O3·nH2O, particles of <1 nm thickness, were fabricated by the photochemical decomposition of [Fe3(CH3CO2)7(OH)· H2O)]+ incorporated in the inter-layer of H2Ti4O9 and H4Nb6O17. Both nanocomposites were capable of hydrogen evolution to the extent of 8.1–8.7 cm3 over 5 h, following irradiation with visible light (λ > 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·nH2O. The hydrogen production was enhanced to 11.3–13.6 cm3 over 5 h by doping Pt together with Fe2O3·nH2O in the interlayer. Hydrogen evolution was linear with time with the niobate system being slightly more efficient.
H2Ti4O9/
Fe2O3-n 和 H4Nb6O17/ -n 纳米复合材料含有厚度小于 1 nm 的插层 -n 颗粒,是通过光
化学分解 H2Ti4O9 和 H4Nb6O17 层间的 [Fe3(CH3CO2)7(OH)-
H2O)]+ 制成的。在以 Na2SO3 为牺牲供体的条件下,用 450 W
汞灯发出的可见光(λ > 400 nm)照射这两种纳米复合材料 5 小时后,它们的
氢气进化量都能达到 8.1-8.7 立方厘米。这些纳米复合材料的制氢活性优于无支撑的 -n 。在夹层中掺入
铂和 -n 后,5 小时内的产氢量提高到 11.3-13.6 立方厘米。
氢气进化与时间呈线性关系,
铌酸盐系统的效率略高。