不同牺牲剂下光催化产氢的CdS形貌效应  

Morphological effects of CdS on photocatalytical hydrogenproduction with different sacrificial agents

作　　者：苏晨 罗亮锋 Su Chen;Luo Liangfeng(School of Chemical Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,Guangdong,China)

机构地区：[1]中山大学化学工程与技术学院,广东珠海519082

出　　处：《工业催化》2024年第9期40-44,共5页Industrial Catalysis

基　　金：中山大学百人计划项目。

摘　　要：半导体催化剂的形貌是光催化分解水产氢效率的重要影响因素之一。但大多数研究中在探讨催化剂形貌效应的时候,往往忽视了反应体系中牺牲剂的影响。以具有良好可见光活性的CdS为研究对象,制备纳米颗粒、纳米棒和纳米片3种形貌的样品,并分别在以硫化钠/亚硫酸钠混合物、乳酸以及三乙醇胺作为牺牲剂的反应体系中对比3种不同形貌CdS的产氢效率。实验结果显示,以硫化钠/亚硫酸钠混合物为牺牲剂时,CdS纳米片的产氢效率为23.86 mmol·(g·h)^(-1),远高于另外两种形貌的样品。当牺牲剂为乳酸或三乙醇胺时,CdS纳米棒的产氢效率最高。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 nanoparticles,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.

关 键 词：催化化学 光催化产氢 硫化镉 形貌效应 牺牲剂 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]