氧化石墨烯二氧化钛复合材料的制备与表征

Preparation and Characterizations of Graphene Oxide/Titanium Dioxide Composite Materials

以氧化石墨烯和工业钛液为原料,采用水热合成方法制备了氧化石墨烯二氧化钛复合材料。复合材料的外观形貌用扫描电镜(SEM)进行分析。材料基团结构用红外光谱(IR)和X射线衍射(XRD)进行分析。光催化性能用紫外可见光谱(UV-vis)仪进行分析。结果发现氧化石墨烯加入使二氧化钛形态由球粒状变化为片层结构基础上带孔洞结构的球状颗粒。XRD分析表明氧化石墨烯加入有利于锐钛型二氧化钛生成。在一定范围内,随氧化石墨烯用量的增加,复合材料的光催化性能提升,表明氧化石墨烯的加入有利于光吸收。

Graphene oxide/titanium dioxide(TiO2-GO) composites were prepared by hydrothermal synthesis method using graphene oxide and industrial titanium liquid as raw materials.The microstructure,functional groups and phases,photocatalytic properties of the composites were analyzed by scanning electron microscope(SEM),infrared spectroscopy(IR) and X-ray diffraction(XRD),ultraviolet visible spectroscopy(UV-vis),respectively.The results show that the addition of graphene oxide changes the shape of titanium dioxide,from spherical particles to porous spherical particles based on lamellar structure.Addition of graphene oxide is beneficial to the formation of anatase titanium dioxide.The photocatalytic properties of the composites increase with increase of the graphene oxide addition in a certain range,indicating that the addition of graphene oxide favors the light absorption.