中文摘要：

为垂直地综合的一条灵巧的、没有氟的符号的途径排列了 mesocrystalline 锐钛矿 TiO ₂ nanosheets 的数组与高度暴露了 { 001 } 方面通过 topotactic 被开发转变。唯一的 mesocrystalline { 001 } 垂直地在传导性的做氟的符号的锡氧化物玻璃上排列的 -faceted TiO ₂ nanosheet 数组基于格子在先锋和锐钛矿晶体之间匹配从单人赛水晶的先锋 nanosheet 数组通过 topotactic 变换被认识到。形态学和微观结构 { 001 }-faceted TiO ₂ nanosheets 能被改变反应物集中并且退火乐意地调制温度。由于提高的染料吸附，减少了费用再结合，并且提高了散布产生从的光暴露{ 001 }方面，除了低维的结构数组的有益的特征(例如，快电子运输和有效费用收集)，当他们为敏化染料的太阳能电池( DSSC )被用作阳极时，获得的 TiO ₂ nanosheet 数组展出了优异性能。特别地， { 001 }-faceted TiO ₂ nanosheet 数组 ~ 15 m 长在 500 敨攠癮 退火了？？

英文摘要：

A facile, fluorine-free approach for synthesizing vertically aligned arrays of mesocrystaUine anatase TiO2 nanosheets with highly exposed {001} facets was developed through topotactic transformation. Unique mesocrystalline {001}-faceted TiO2 nanosheet arrays vertically aligned on conductive fluorine-doped tin oxide glass were realized through topotactic conversion from single-crystalline precursor nanosheet arrays based on lattice matching between the precursor and the anatase crystals. The morphology and microstructure of the {001}-faceted TiO2 nanosheets could be readily modulated by changing the reactant concentration and annealing temperature. Owing to enhanced dye adsorption, reduced charge recombination, and enhanced light scattering arising from the exposed {001} facets, in addition to the advantageous features of low-dimensional structure arrays （e.g., fast electron transport and efficient charge collection）, the obtained TiO2 nanosheet arrays exhibited superior performance when they were used as anodes for dye-sensitized solar cells （DSSCs）. Particularly, {001}-faceted TiO2 nanosheet arrays -15 μm long annealed at 500 ℃ showed a power conversion efficiency of 7.51%. Furthermore, a remarkable efficiency of 8.85% was achieved for a DSSC based on doubleqayered TiO2 nanosheet arrays -35 μm long, which were prepared by conversion from the precursor nanoarrays produced via secondary hydrothermal growth.