Cd_xZn_(1-x)S纳米颗粒制备及其光催化性能  

Preparation and Photocatalytic Activity of Cd_xZn_(1-x)S Nanoparticles

作　　者：刘向[1] 汪汉斌[1] 向晶晶[1] 

机构地区：[1]湖北大学物理与电子科学学院,湖北武汉430062

出　　处：《广州化工》2017年第6期61-62,74,共3页GuangZhou Chemical Industry

摘　　要：采用共沉淀法一步合成了不同成分的Cd_xZn_(1-x)S纳米晶体。利用X射线衍射仪分析发现产物Cd_xZn_(1-x)S纳米晶体均为立方相固溶体结构,晶粒大小在10~15 nm之间。扫描电子显微镜观察到Cd_xZn_(1-x)S纳米晶体颗粒团聚为300~500 nm的球状结构。研究了前驱物中不同镉和锌的原子配比对Cd_xZn_(1-x)S纳米晶体的形貌,结构以及光催化活性的影响。结果显示Cd_(0.5)Zn_(0.5)S具备最佳催化活性,经过6 h的光催化测试其稳定光催化制氢速率约为774μmol/h·g。A series of CdxZn1-xS nanocrystals with controllable composition were synthesized by using coprecipitation method. X-ray diffraction analysis showed that all the CdxZn1-xS nanocrystals were solid solutions with cubic phase and the crystal size range from 10 - 15 nm. By scanning electron microscope, it was observed that the CdxZn1-xS nanocrystals aggregated into spherical structure with diameter range from 300 -500 nm. The morphology, the structure and the photocatalytic activity of CdxZn1-xS nanocrystals were studied by changing the mole ratio of cadmium and zinc source while fixing the total moles of reactants. The results showed that Cd0. 5Zn0. 5 S possessed the best photocatalytic activity. After 6 h photocatalytic activity test, the photocatalytic hydrogen production rate of Cd0. 5Zn0. 5S reached 774 mol/h · g stably.

关 键 词：CdxZn1-xS 固溶体 光催化 制氢 

分 类 号：O613[理学—无机化学]