通过喷雾高温分解的方法制备了TiO2多孔微球和TiO2/Graphene多孔微球.石墨烯作为电子受体,能够增强TiO2电子和空穴的分离效率.另外,石墨烯的引入提高了TiO2对太阳光的利用率.在太阳光的照射下,TiO2/Graphene多孔微球对亚甲基蓝具有较高的光催化活性,然而其对乙醛的降解和CO2的生成均显示了较低的光催化活性.%TiO2 and TiO2/Graphene porous microspheres were prepared by ultrasonic spray pyrolysis. Graphene acted as an electron-acceptor material to effectively hinder the electron–hole pair recombination of TiO2,Moreover,the introduc-tion of graphene increased the light absorption in the whole visible region and displayed a red-shifted absorption edge. Under solar irradiation,TiO2/graphene porous microspheres showed higher photocatalytic activity for methylene blue deg-radation compared with TiO2 microspheres. However,TiO2/graphene porous microspheres showed low photocatalytic ac-tivity for acetaldehyde degradation and CO2 generation compared with TiO2.
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