如果用于分解的物质是水蒸汽，那么二氧化铈催化剂还可以将分解出的氧气用于二氧化铈的再生。
When water vapor was used, the catalyst would strip out its oxygen to reform cerium dioxide.
综述了国内外纳米二氧化铈的制备方法，比较了各方法的优缺点，并介绍了纳米二氧化铈的应用领域。
The preparation methods of nanometer ceric oxide at home and abroad were reviewed, their advantages and dis- advantages were discussed, and its application fields were introduced too.
应用推荐