采用氢气还原纳米TiO2粉体制备了Ti3O5粉体,采用FTIR、XRD、SEM、UV-Vis等对原料及产物进行了表征.结果表明:加大通氢流量有利于还原反应的进行；以氧化硅包覆的纳米TiO2粉体(金红石型)为原料,1150℃下氢气还原1h可合成单一物相组成的λ-Ti3O5粉体.对比自制未包覆处理的纳米TiO2,TiO2粉体的氧化硅包覆处理有利于λ-Ti3O5的形成；λ-Ti3O5与β-Ti3O5有较高的光学对比度,室温下,经适当的纳秒脉冲激光(532 nm,20 ns)处理,λ-Ti3O5会向β-Ti3O5发生转变,表现出较好的光存储性能.
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