【摘要】 TiO₂吸光性能差和光电转化效率低,通过Au NPs修饰TiO₂纳米片来提高其吸光性能以及光电转化效率。修饰后的纳米复合物（Au-TiO₂-Ti）在可见光范围内的光吸收和光电流密度都明显增加,在200 mW/cm²,0.5 V vs. Ag/AgCl的条件下,光电流密度可达到0.38 mA/cm²,经过8 h光照后光电流保持稳定,表明材料具有优异的稳定性。因此,合成的Au-TiO₂-Ti电极在光电化学转化中有良好的应用前景。更多还原

【Abstract】 The application of TiO₂ has been limited by the poor light absorption performance and low photoelectrochemical conversion efficiency. Thus, the Au NPs were uniformly deposited on the surface of the TiO₂ nanosheets. The light absorption performance and photochemical conversion efficiency of the sample modified by Au NPs were significantly improved. In detail, the light absorption of the modified Au-TiO₂-Ti composite was broadened in the visible light range, and the photocurrent density was achieved 0.4 mA/cm² at 0.5 V vs. Ag/AgCl under 200 mW/cm² light intensity. Moreover, the photocurrent did not decrease significantly under 8 h illumination, indicating that the material had good stability. Thus, the synthesized Au-TiO₂-Ti electrode has a good application prospect in photoelectrochemical.更多还原