Photoinduced charge separation in titania nanotubes.
Photoinduced charge separation in titania nanotubes.
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DOI：
10.1021/jp063800q
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发表时间：
2006-07
期刊：
影响因子：
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通讯作者：
T. Tachikawa;S. Tojo;M. Fujitsuka;Toru Sekino;T. Majima
中科院分区：
文献类型：
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作者：
T. Tachikawa;S. Tojo;M. Fujitsuka;Toru Sekino;T. Majima
利用时间分辨漫反射光谱研究了紫外光照射下二氧化钛纳米管和纳米粒子对芳香族化合物的光催化单电子氧化反应。显着长寿的芳香族化合物的自由基阳离子和捕获的电子观察到的纳米管相比，那些纳米粒子。根据TiO2中自由基阳离子和电子之间的电荷复合动力学，讨论了表面形貌对吸附在表面上的芳香族化合物的单电子氧化过程的影响.
The photocatalytic one-electron oxidation reaction of an aromatic compound during UV light irradiation of titania nanotubes and nanoparticles was investigated using time-resolved diffuse reflectance spectroscopy. Remarkably long-lived radical cations of the aromatic compound and trapped electrons were observed for the nanotubes when compared to those for nanoparticles. The influences of the morphology on the one-electron oxidation process of an aromatic compound adsorbed on the surface were discussed in terms of the charge recombination dynamics between the radical cation and electrons in TiO2.