CdS/石墨烯纳米复合材料的超声化学法制备及光催化性能  

CdS-Graphene Nanohybrids: Facile Ultrasonic Synthesis and Photocatalytic Performance

作　　者：周田[1] 陈炳地[1,2] 姚爱华[1,3] 王德平[1,3] 

机构地区：[1]同济大学材料科学与工程学院,上海200092 [2]同济大学先进材料与纳米生物医学研究院,上海200092 [3]同济大学先进土木工程材料教育部重点实验室,上海200092

出　　处：《无机化学学报》2013年第2期231-236,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.50702037);同济大学中央高校基本科研业务费专项基金资助项目

摘　　要：采用超声化学法制备了CdS/石墨烯纳米复合材料,通过TEM、FE-SEM、XRD、UV-Vis等对该复合材料的结构、形貌及其光学和可见光光催化性能进行了表征。结果表明,超声化学法不仅合成过程简单,而且石墨烯表面所负载的CdS纳米粒子尺寸小、分散性好,与石墨烯的结合牢固。由于石墨烯优异的吸附性能和对载流子的高迁移率,CdS/石墨烯纳米复合材料显示出较高的可见光光催化性和光稳定性,30 min内甲基橙的降解率即可达到90%以上,且3次重复实验过程中光催化效果接近。CdS/graphene nanohybrids were synthesized by a facile ultrasonic method. Their morphology, microstructure, optical property and photocatalytic activity under visible light were characterized by TEM,FE- SEM,XRD,UV-Vis and PL. The results show that ultrasonic condition enables small-sized, well-dispersed CdS nanoparticles to anchor firmly on the graphene sheets. Due to the good absorption property and the reduction of electron-hole pair recombination in CdS, the CdS/graphene nanohybrids exhibit high photo-stability and excellent photocatalytic performance for the degradation of methyl orange with a maximum removal rate of more than 90% in 30 min under visible light irradiation, and also no detectable changes of photocatalytic performance were observed during three cycles.

关 键 词：石墨烯 CDS 纳米复合材料 超声化学法 光催化 

分 类 号：O614.242[理学—无机化学] O613.71[理学—化学]