Cerium dioxide nanotube and preparation method thereof

The invention discloses a cerium dioxide nanotube and a preparation method thereof. The inner diameter of the cerium dioxide nanotube is 4-10nm, the outer diameter of the cerium dioxide nanotube is 20-60nm, and the length of the cerium dioxide nanotube is 100nm-5mu m. A magnesium hydroxide nanotube is used as a template, the cerium dioxide nanotube is efficiently prepared by adopting an ion exchange method, and high-temperature calcination is not needed. The method is simple to operate and low in cost, and has industrial application prospects. 本发明公开了一种二氧化铈纳米管及其制备方法，二氧化铈纳米管内径在4～10nm之间，外径为20～60nm，管长在100nm～5μm之间。使用氢氧化镁纳米管为模板，采用离子交换的方法高效制备了二氧化铈纳米管，无需高温煅烧。本方法操作简单、成本低，具有工业化应用前景。