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Three different techniques(templating,without template and leaching)were applied to obtain mesoporous ceria(CeO2)materials.Synthesis was done in presence of a soft template as well as hard template.As a soft template,a hybrid organic/inorganic route,such as ordered mesoporous carbon(OMC)and carbon sphere were used as a matrix.After infiltration of Ce(NO3)3*6H2O,carbon template is eliminated by thermal treatment in air.