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电化学  2009 

氮掺杂TiO_2纳米线阵列优越的可见光光电性能(英文)

, PP. 432-440

Keywords: 氮掺杂,TiO2纳米线阵列,可见光吸收,光电化学

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Abstract:

成功制备了氮掺杂锐钛矿TiO2纳米线,并研究了它的光电化学性质.结果表明,与商用P25TiO2纳米粒子和未掺杂TiO2纳米线相比,氮掺杂TiO2纳米线作为光阳极明显地提高了光电转换效率(IPCE%),在可见光区有明显光吸收;在100mW/cm2可见光光照下,氮掺杂TiO2纳米线具有最大的光电流密度和能量转换效率.例如,当电压为0.09V(vs.Ag/AgCl)时最大能量转换效率为0.52%,均高于未掺杂TiO2纳米线和商用P25TiO2纳米粒子的,充分表现出它优越的光响应和光电化学性能,在光电化学池、太阳能制氢等方面具有广泛的应用前景.

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