摘 要: 为了提高二氧化钛(TiO₂) 在可见光下的催化性能, 本文中采 用酸性铬蓝 K 对纳米 TiO₂ 的敏化。然后通过 TEM 观察敏化后的 TiO₂ 的形貌, 并在可见光下对甲基橙进行降解实验。实验结果表明, 酸性铬蓝 K 可吸附在 TiO₂ 的表面, TiO₂ 敏化后拓宽了的吸收光谱, 在可见光范围有较大的吸收, 并且发生了明显的红移现象。 用不同 的酸性铬蓝 K 时, 20 mg/L 敏化的 TiO₂ 对甲基橙的降解效果最好。 

关键词: 二氧化钛; 酸性铬蓝 K; 敏化

Abstract: In order to improve the catalytic performance of TiO_2, the re search focus on using acid chrome blue K sensitize nanometer TiO₂. Then the morphology of sensitized TiO₂ was observed and the sensitized TiO₂was used to degrade the helianthine under visible light. The results showed that the acid chrome blue K can adsorb on the surface of TiO₂and open up the absorption spectrum of TiO₂, and making it have a larger adsorption in visible light extent, and occur obvious Einstein shift. The effect is the best when 20 mg/L of acid chrome blue K sensitized nanome ter TiO₂ degrade the lianthine. 

Keywords: titania; acid chrome blue K; sensitization