用改进的Hummers法制备了氧化石墨烯(GO),在质子化的氧化铟-氧化硒导电玻璃基片上制备了静电自组装薄膜,通过紫外-可见光谱和扫描电镜对薄膜进行了表征并研究了薄膜的光电化学性质.结果表明,GO薄膜是一种稳定的光电阴极材料,在光强为100 mW/cm2的白光照射下,偏压为-0.4 V时,0.1 mol?L-1的Na2SO4溶液中薄膜电极的光电流密度达3.72μA/cm2. The graphene oxide (GO) was prepared by a modified Hummers method. An electrostatic self-assembled thin film was prepared on a protonated indium oxide-selenide conductive glass substrate. The films were characterized by UV-Vis spectroscopy and scanning electron microscopy The results showed that the GO thin film was a stable photocathode material. When the bias voltage was -0.4 V and the concentration of 0.1 mol? L-1 Na2SO4 was at 100 mW / cm2, The photocurrent density of the middle membrane electrode was 3.72μA ​​/ cm2.