Morphological effects of CdS on photocatalytical hydrogen production with different sacrificial agents
The morphology of semiconductor catalyst is one of the important factors affecting the efficiency of photocatalytic decomposition of aquatic hydrogen.However,the influence of sacrificial agents in the reaction system is often ignored in most researches when discussing the effect of catalyst morphology.The CdS with good visible light activity was used as the research object to prepare the samples of nanoparti-cles,nanorods and nanosheets,and the hydrogen production efficiency of the CdS with different morphology was compared in the reaction system with sodium sulfide/sodium sulfite mixture,lactic acid and trieth-anolamine as the sacrifice agent.The experimental results showed that the hydrogen production efficiency of CdS nanosheets was 23.86 mmol·(g·h)-1 when sodium sulfide/sodium sulfite mixture was used as sacrificant,which was much higher than that of the other two morphology samples.When the sacrificial agent was lactic acid or triethanolamine,the hydrogen production efficiency of CdS nanorods was the highest.
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