摘要
采用溶剂热法制备Zn_2Ge O_4纳米晶;并将其负载到氧化石墨烯(GO)上。通过两步水热法制备了一系列Zn_2Ge O_4/GO复合光催化剂。利用X-射线衍射(XRD)、透射电子显微镜(TEM)、紫外可见吸收光谱(UV-Vis)等手段对催化剂的结构、形貌及光学性能进行了表征;并以罗丹明B(Rh B)作为目标降解污染物,对其进行了光催化性能测试。结果表明,Zn_2Ge O_4纳米晶均匀地分散在GO上,与单纯的Zn_2Ge O_4纳米晶相比,Zn_2Ge O_4/GO复合物的光催化性能有了明显的提高。当GO质量分数为5%时,罗丹明B降解率达到95.21%;且经过5次循环使用后,仍然保持较高的光催化活性,具有良好的稳定性。
The Zn2GeO4nanocrystalline are prepared via solvothermal method and loaded on the graphene oxide（ GO）. The Zn2GeO4-graphene oxide nanocomposite has been synthesized through a simple two-steps reaction. The structure,topography and the optical property of the photocatalys were characterized by X-ray diffraction（ XRD）,transmission electron microscopy（ TEM） and ultraviolet-visible spectroscopy（ UV-Vis）. Rhodamine B（ Rh B） was used as the degradation agent to evaluate the performance of the photocatalyst. The result show that the Zn2GeO4nanocrystal is dispersed on the surface of GO uniformly,and compared with pure Zn2GeO4,the photocatalytic activity of the Zn2GeO4/ GO composite is obvious enhanced. When the mass of GO is 5%,the degradation of Rhodamine B is up to 95. 21%,and after reused for five times,the photocatalysis still exhibits a better photocatalytic activity. The Zn2GeO4/ GO nanocomposite photocatalyst possess excellent stability and reusability.
出处
《科学技术与工程》
北大核心
2016年第11期30-34,共5页
Science Technology and Engineering
作者简介
张倩，硕士研究生。研究方向：化学工艺。E-mail：916180368@qq．com。
