乙二胺存在下溶剂热制备纳米硫化镉及其光催化性能  

Preparation of nanocrystalline CdS by solvothermal process in the presence of ethylenediamine and its photocatalytic performance

作　　者：唐利锋[1] 李越湘[1] 彭绍琴[1] 吕功煊[2] 李树本[2] 

机构地区：[1]南昌大学化学系,江西南昌330031 [2]中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃兰州730000

出　　处：《功能材料》2011年第1期120-123,127,共5页Journal of Functional Materials

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB220003);国家自然科学基金资助项目(20763006);江西省自然科学基金资助项目(2007GZH1754);江西省教育厅科技资助项目(GJJ09041)

摘　　要：以硫酸镉(CdSO4.8/3H2O)和硫代乙酰胺(TAA)为镉源和硫源,乙二胺(EDA)为络合剂,乙醇为溶剂,通过溶剂热法制备了纳米CdS光催化剂。采用XRD、BET、SEM、UV-Vis等方法对光催化剂进行了表征。以甲酸水溶液的可见光催化制氢反应为探针,考查了乙二胺加入量、反应温度、Pt负载量对催化剂活性的影响。结果表明,当加入的乙二胺和Cd2+摩尔比为1.5∶1.0,反应温度为150℃,Pt负载量为0.15%(质量分数)时,催化剂的活性最高。Nano-cadmium sulfide photocatalysts were synthesized by a solvothermal process in ethanol.Ethylenediamine（EDA）,cadmium sulfate and thioacetamide were used as a complexing agent,cadmium source and sulfur source,respectively.The effects of amount of the complexing agent,the reaction temperature and the amount of deposited platinum（Pt） on the photocatalytic activity of the as-prepared cadmium sulfide were investigated through a probe reaction,namely photocatalytic hydrogen production from formic acid solution under visible light irradiation.The samples were characterized by X-ray powder diffraction（XRD）,BET,scanning electron microscopy（SEM） and ultraviolet-visible absorption spectra techniques（UV-Vis）.The results showed that when the molar ratio of EDA to Cd2＋ was 1.5∶1.0,the reaction temperature was 150℃ and Pt-loaded content was 0.15wt%,the photocatalyst exhibited the highest activity for hydrogen evolution.

关 键 词：硫化镉 溶剂热 光催化 制氢 络合剂 

分 类 号：O643[理学—物理化学]