CdS/Al-HMS 光催化剂的太阳能可见光制氢性能
首发时间:2008-12-05
摘要:采用离子交换及硫化反应,在Al 取代的HMS 中孔分子筛孔道内组装CdS 纳米颗粒,制备了系列CdS/Al-HMS 及Ru 负载的CdS/Al-HMS 纳米复合材料光催化剂。考察了CdS 的不同组装量对CdS/Al-HMS 纳米复合材料的结构影响。利用XRD、XRF 及漫反射UV-vis 光谱对其进行了表征。可见光催化降解甲酸制氢实验结果表明:载Ru 后的CdS/Al-HMS 纳米复合材料光催化剂降解甲酸的最高产氢速率为25.9 mL⋅h-1, 420 nm 处的表观量子产率为11.8 %。
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Study on hydrogen production by photocatalysis of solar energy visible light over CdS/Al-HMS photocatalysts
Abstract:A series of aluminum-substituted mesoporous molecular sieve (Al-HMS) coupled with CdS (CdS/Al-HMS) and Ru supported CdS/Al-HMS nanocomposites are prepared by ion exchange and sulfuration reaction. The paper explores the content of CdS affects on the structure of nanocomposites. The photocatalysts are characterized by using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray fluorescence analysis (XRF), diffuse reflectance UV-visible spectrum technology. The reaction activity results indicate that the CdS/Al-HMS loaded 0.99wt% Ru shows a highest H2 evolution at a rate of 25.9 mL劒h-1 with an apparent quantum yield of 11.8% at 420 nm by photocatalytic degradation of formic acid.
Keywords: Photocatalysis Nanocomposite Visible light Hydrogen production
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