中文摘要：

研究表明：在620℃煅烧后，模板除去，TiO2形成。产物主要由TiO2和少量的H2Ti307组成。得到的产物的比表面积为252．6m2／g。P-C-I测试结果表明，30℃时TiO2显示可逆的吸／放氢过程。在吸／放氢过程中，化学键发生微小的偏移，表明氢可能和OH基团发生反应。随着吸／放氢循环的增加以及比表面积的明显的降低，多孔／中空TiO2坍塌。同时，随着温度的升高，化学吸附量增加，吸氢量升高。

英文摘要：

The hydrogen storage property of the porous/hollow TiO2 using yeast as template was investigated. It is demonstrated that crystalline TiO2 forms until the temperature reaches 620 ℃. The product is composed of TiO2 and minor amount of H2Ti3O7 after heat treatment. The porous/hollow TiO2 with a specific surface area of 252.6 m2/g is obtained due to the removal of yeast. Pres- sure-composition isothermal （P-C-I） curve of TiO2 shows that a reversible hydriding/dehydridng process occurs at 30 ℃, suggesting an obvious physisorption. The change of the chemical bond in Fourier-transform infrared （FT-IR） spectrum in hydriding/dehydridng indicates that hydrogen reacts with OH group on TiO2 surface even at 30 ℃. The porous/hollow TiO2 collapses as cycles increase and the corresponding specific surface area decreases dramatically. Contrary, the hydrogen uptake increases with increasing of tem- perature, which is caused by chemisorption.