Nano-structured CeO

2

with the characters of surface effects

volume effects

quantum size effects and macro-tunneling effects

exhibiting the unique physical and chemical properties

which have been widely used in the fields of precision ceramics

magnetic recording

ultraviolet shielding

photoelectric sensing and catalysis. To summary of the preparation methods of CeO

2

nanostructures will not only provides the scientific guidance for the development of novel nano-structures of CeO

2

but also further promotes the efficient use of

nano-CeO

2

in related fields. Here

the research status of the fabrication methodology of nano-CeO

2

were discussed

the including of combustion method

spray thermal decomposition method

supercritical water system oxidation method

microwave method

sol-gel method

microemulsion method

electrochemical method and hydrothermal/solvothermal method were analyzed. The involved characteristics

principles and limitations also been explained. As result

the research found that the controllable preparation of CeO

2

nanostructures is still a difficult problem at this stage. In addition

the thermodynamics and reaction kinetics models involved during the preparation have yet to be improved. Therefore

it is necessary to focus on the in-depth research in the relevant basic theories on the preparation process

the mechanism of nucleation and growth should be clarified in detail

which in turn to provide a reference for the development of novel nano-CeO

2

.