Developnent of functional ceria nanosheets catalyst using two dimensional reaction filed

在含碳酸盐离子的水热溶液中，制备了具有不同形态的新型功能氧化铈纳米颗粒。利用表面活性剂成功地合成了具有纳米线、纳米棒、纳米片形貌的碳酸铈。热分解氧化为二氧化铈后，其形态保持不变。使用表面活性剂合成的纳米氧化铈的储氧能力均高于未使用表面活性剂合成的纳米氧化铈。与JRC-CEO-1相比，这些氧化铈纳米颗粒具有更好的碳燃烧活性。

Novel functional ceria (CeO_2) nanoparitices with different morphology in hydrothermal solution including carbonate ion have been developed. Cerium carbonate with nanowires, nanorods, nanosheets morphology has been successfully synthesized using surfactants. Their morphologies were sustained after thermal decomposition-oxidation to ceria. Each ceria nanoparticles synthesized using surfactant exhibited higher oxygen storage capacity than ceria nanoparticles synthesized without surfactants. These ceria nanoparticles showed superior activity for the carbon combustion than JRC-CEO-1.