Preparation method of truncated cylinder-shaped octahedral anatase type TiO2

The invention discloses a preparation method of truncated cylinder-shaped octahedral anatase type TiO2. The preparation method comprises the following steps: performing a hydrothermal reaction of P25, potassium hydroxide and deionized water to obtain potassium titanate; dispersing the potassium titanate into ammonium nitrate to obtain a precursor potassium titanate nanowire; adding the potassium titanate nanowire, ammonium carbonate and deionized water into a high-pressure kettle with a polytetrafluoroethylene lining for a hydrothermal reaction; after complete reaction, filtering and drying the obtained product; and calcining in a muffle to obtain truncated cylinder-shaped octahedral anatase type TiO2. The preparation method disclosed by the invention has the advantages of simple synthesis technology, low cost and high purity, meets the conditions of large-scale industrial production and has a broad application prospect. 本发明公开了种截柱状八面体锐钛矿型TiO2的制备方法，包括以下步骤：利用P25、氢氧化钾和去离子水进行水热反应得到钛酸钾，然后将钛酸钾分散硝酸铵中，得到前驱体钛酸钾纳米线；将钛酸