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This article reports a novel preparation of three-dimensional (3D) CeO2 originating from crystalline cerium formate by a surfactant-free route using H2O, ethanol and ethylene glycol as solvents. The sea urchin shaped 3D CeO2 gave rise to micro/nanocomposite structures with high BET surface area up to 234 m2 g−1. The 3D structure improved the reducibility of surface CeO2 due to the increased oxygen...
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