CeO₂, Co₃O₄ and mixed Co₃O₄-CeO₂ hollow microfibers were synthesized using cotton as biotemplate by incipient wetness impregnation (one step synthesis). Mixed Co₃O₄-CeO₂ fibers were also prepared by incorporating cobalt onto CeO₂ fibers by wet impregnation (sequential synthesis). A thorough characterization by BET, XRD, LRS, XPS, EDX and SEM was conducted to correlate the physical chemistry properties of the fibers with their catalytic performance. Ceria fibers showed a maximum combustion rate at T_M = 420 °C. While cobalt fibers were even more active (T_M = 365 °C), Co₃O₄-CeO₂ fibers resulted in intermediate activity (T_M = 380 °C). The good catalytic performance could be related to chemisorbed labile oxygen species (O_β).

以棉为生物模板，通过初期湿润浸渍法合成了CeO ₂，Co ₃ O ₄和混合的Co ₃ O ₄ -CeO ₂中空超细纤维（一步合成）。混合的Co ₃ O ₄ -CeO ₂纤维也通过湿浸渍（步骤合成）将钴掺入CeO ₂纤维上而制得。进行了BET，XRD，LRS，XPS，EDX和SEM的全面表征，以将纤维的物理化学性质与其催化性能相关联。二氧化铈纤维在T _M  = 420°C时显示出最大燃烧速率。虽然钴纤维的活性更高（T_M  ＝ 365℃），Co ₃ O ₄ -CeO ₂纤维产生中间活性（_TM  ＝ 380℃）。良好的催化性能可能与化学吸附的不稳定氧（_Oβ）有关。