[BMIM]PF6离子液体中GO/CuO/CeO2催化剂的制备及可见光活性  

Preparation and Visible-light Photocatalytic Activity of GO/CuO/CeO 2 Photocatalysts in[BMIM]PF6

作　　者：郦雪 张燕[1] 张玉琰 宋凤娟 赵晓涵 Akanyange Stephen Nyabire 曹晓强[1] 吕宪俊[1] LI Xue;ZHANG Yan;ZHANG Yuyan;SONG Fengjuan;ZHAO Xiaohan;Akanyange Stephen Nyabire;CAO Xiaoqiang;LYU Xianjun(College of Chemical and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东科技大学化学与环境工程学院,青岛266590

出　　处：《材料导报》2020年第18期18019-18024,共6页Materials Reports

基　　金：国家自然科学基金(51674161);山东省政府公派留学项目。

摘　　要：在[BMIM]PF6离子液体辅助下制备了纯CeO 2和一系列GO/CuO/CeO 2可见光催化剂,并采用X射线衍射仪(XRD)、场发射扫描电镜(SEM)、比表面积及孔隙度分析仪(BET)以及紫外可见漫反射仪(UV-Vis DRS)对样品进行表征及分析。研究了可见光照射下,不同GO和CuO掺杂量对GO/CuO/CeO 2复合催化剂产氢活性的影响规律。实验结果表明,复合样品产氢效率明显优于纯CeO 2,当GO负载量为2%(质量分数)、CuO负载量为3%(质量分数)时,复合样品的产氢速率可达111.23μmol·h-1·g-1(为纯CeO 2的2.5倍),量子效率为15.67%。Pure CeO 2 and a series of GO/CuO/CeO 2 photocatalysts were prepared with the assist of[BMIM]PF6 ionic liquid.X-ray diffraction,scanning electron microscopy,accelerated surface area and porosimetry system,and UV-Visible diffuse reflectance spectra were used to characterize and analyze the samples.The influence of different GO and CuO doping amounts on the hydrogen production activity of GO/CuO/CeO 2 composite catalyst under the irradiation of visible light was studied.The experimental results showed that the hydrogen production efficiency of composite samples was significantly better than that of pure CeO 2,and the hydrogen production rate reached 111.23μmol·h-1·g-1 when the GO load was 2wt%and the CuO load was 3wt%,which was 2.5 times of the pure CeO 2,the quantum yields of the composite sample was 15.67%.

关 键 词：离子液体 可见光 光催化产氢 二氧化铈 

分 类 号：O643[理学—物理化学]