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中文摘要：
采用水热法制备了钛酸盐纳米管，并将钛酸盐纳米管制备成纳米结构电极进行光电化学研究．钛酸盐纳米管产生阳极光电流，具有n-型半导体特性．结果表明，聚3-甲基噻吩[poly（3-methylthiophene），PMeT]、聚3-己基噻吩[poly（3-hexylthiophene），P3HT]修饰钛酸盐纳米管后产生的光电流均较纯钛酸盐纳米管的光电流高，且使产生光电流的波长向长波区移动．钛酸盐纳米管／PMeT、钛酸盐纳米管／P3HT的光电转换效率分别达11．40％，0．91％（未校正光子损失）．钛酸盐纳米管／PMeT的光电转换效率较钛酸盐纳米管／P3HT的光电转换效率高10．5％．钛酸盐纳米管／PMeT、钛酸盐纳米管／P3HT中存在p-n异质结，在一定条件下p-n异质结的存在有利于光生电子／空穴的分离．
英文摘要：
Titanate nanotubes were prepared by hydrothermal method. The photoelectrochemical properties of the titanate nanotubes were investigated. The titanate nanotubes produced anodic photocurrent, exhibiting the property of n-type semiconductor. The experimental results showed that photocurrent produced by the poly（3-methylthiophene） （PMeT） modified titanate nanotubes and the poly（3-hexylthiophene） （P3HT） modified titanate nanotubes was higher than that of the pure titanate nanotubes. The wavelength producing photocurrent for titanate nanotubes/PMeT and titanate nanotubes/P3HT both shifted to long wavelength region respectively. The maximum IPCE of titanate nanotubes/PMeT and titanate nanotubes/P3HT reached 11.40% and 0.91% respectively （no correction for photon loss）. The maximum IPCE of titanate nanotubes/PMeT was higher by 10.5% than that of titanate nanotubes/P3HT. The p-n heterojunction existed in titanate nanotubes/PMeT and titanate nanotubes/P3HT respectively, which favored the separation of electron/hole pairs generated by photoexcition.
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