Abstract
We report a novel resorcinol–formaldehyde sol–gel (RF) method to prepare samarium-doped ceria (SDC). The synthesized SDC powders exhibit cotton-like micro-morphology with nanosized pores. The structure is composed of interconnected nanoparticles with average particle size of 4.3nm and remarkably uniform size distribution. The nanoparticles are softly aggregated with Brunauer–Emmett–Teller (BET) surface area as high as 78m2/g after being calcined at 500°C.
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