Spinel NiMn2O4, CoMn2O4, NiFe2O4 and CoFe2O4 hollow microspheres are prepared through an easy and general approach. The preparation procedures include the one‐pot hydrothermal treatment of mixed metal salts and glucose, and subsequent calcination. The different penetration ability of Mn2+ and Fe3+ precursor ions into the interior of glucose‐derived carbon microspheres results in single‐shelled manganites...
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