以石墨为原料制备了氧化石墨烯（GO），采用水热法制备了二氧化钛-石墨烯（TiO₂-rGO）纳米复合材料。利用红外光谱、X射线衍射、透射电镜、拉曼光谱、电化学阻抗谱对合成产物进行了表征。以TiO₂-rGO为光催化剂设计组装了光催化空气净化器，考察了净化器对苯、甲苯和二甲苯的光催化降解性能。结果表明，石墨烯的添加使得净化器具有较高的光催化活性，100 min后，对苯、甲苯和二甲苯的降解率高达90%。

Grapheme oxides (GO) are prepared by using graphite as raw material.Then TiO₂-GO nanocomposites are prepared by hydrothermal method and characterized by FT-IR,XRD,TEM,RAMAN and EIS.The photocatalytic air purifier is designed and assembled by using TiO₂-GO as photocatalyst and its photocatalytic performance is evaluated in the degradation of benzene,toluene and xylene.The results show that the addition of GO has enhanced the photocatalytic activity of purifier.After 100 minutes,the degradation rates of benzene,toluene and xylene all reach as high as 90%.