RGO/TiO_2复合光催化剂的制备与光催化性能研究  

Preparation and photocatalytic activity of RGO/TiO_2 photocatalytic composites

作　　者：苏明星[1] 王卫[1] 倪亚茹[1] 陆春华[1] 

机构地区：[1]南京工业大学材料化学工程国家重点实验室,南京210009

出　　处：《化工新型材料》2013年第10期86-88,共3页New Chemical Materials

基　　金：江苏省创新学者攀登项目(SBK200910148)

摘　　要：采用水热法制备了不同石墨烯掺量的氧化石墨烯(RGO)/TiO2复合光催化材料,通过X射线衍射(XRD)、紫外-可见吸收光谱(UVPC)、红外光谱(FT-IR)、场发射扫描电镜(FESEM)及拉曼光谱(Raman等手段对催化剂进行了表征,并通过降解亚甲基蓝(MB)对催化剂活性进行了评价。结果发现,复合RGO后的TiO2在可见光区的光谱吸收性能得到显著改善,禁带宽度下降,光催化活性明显提高。本研究条件下,当RGO掺入量为2%时制备的催化剂具有最高的光催化活性。A series of reduced graphene oxide（RGO）/TiOz photocatalytic composites with different RGO content were prepared by a simple hydrothermal method. As prepared photocatalysts were characterized by X-ray diffraction （XRD）, UV-Visdiffuse reflection spectrum（UVPC）,Fourier transform Infrared spectrum（FT-IR）, field emission scan elec- tron microscope（FESEM）, and Raman spectrum. The photocatalytie activity of the photocatalysts were evaluated by meth- ylene blue（MB）degradation. After RGO introduction, it was found that the bandgap of RGO/TiO2 was narrowed, the visi- ble-light absorption and photocatalytifc activity were obviously improved. Under our experimental conditions, RGO/TiO2 will give the highest photocatalytic activity when the RGO content was 2X.

关 键 词：TIO2 氧化石墨烯 光吸收 光催化 

分 类 号：O643.36[理学—物理化学]