Herein, we reported a facile electrochemical method to prepare hierarchical porous CeO2 nanospheres and their implementation as highly-efficient absorbents in removing organic dyes. These hierarchical CeO2 nanospheres constructed of numerous nanocrystallites exhibit excellent performance in removing Congo red. The adsorption capacity at 60 min reached 942.7 mg g−1.
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Ouyang et al. (2013) studied this question.
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