A one-dimensional (1D) core-shell of Co-Ce oxide has been prepared by multifluidic coaxial electrospinning method and evaluated for the total oxidation of propane (C₃H₈). Activity and morphological characterizations show that the CeO₂@Co₃O₄ nanofiber catalyst, of which the core is CeO₂ and the shell is Co₃O₄, exhibits excellent oxidation activity. The exposed Co₃O₄ grown on the outside of the fibers can rapidly react with C₃H₈ while CeO₂ with high oxygen storage capacity in the inside is conductive to the enhanced oxidation rate. Besides, the continuous grain boundary provides a fast mass transfer channel for lattice oxygen, and rich oxygen vacancies favor the mobility of active oxygen species. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTs) confirms that the CeO₂@Co₃O₄ catalyst have a faster rate of C₃H₈ adsorption and better oxidation activity with respect to the counterpart using a single-needle electrospinning method. Moreover, the CeO₂@Co₃O₄ catalyst displays excellent thermal stability, and strong resistance against 5 vol% H₂O and 5 vol% CO₂ at both 300 ^oC and 400 ^oC. Our strategy can give some new insights into morphological engineering to promote active oxygen mobility via the construction of one-dimensional core-shell of metal oxides for catalytic oxidation of VOCs.

通过多流体同轴电纺丝法制备了Co-Ce氧化物的一维（1D）核壳，并评估了丙烷（C ₃ H ₈）的总氧化。活性和形态表征表明的CeO ₂ @Co ₃ ö ₄纳米纤维的催化剂，其中所述芯是的CeO ₂和壳是Co ₃ ö ₄，表现出优异的氧化活性。生长在纤维外侧的裸露Co ₃ O ₄可以与C ₃ H ₈快速反应，而CeO ₂内部具有高储氧能力的金属有助于提高氧化速率。此外，连续的晶界提供了晶格氧的快速传质通道，富氧空位有利于活性氧的迁移。原位漫反射红外傅里叶变换光谱（DRIFTs）证实，与使用单针静电纺丝方法相比，CeO ₂ @Co ₃ O ₄催化剂具有更快的C ₃ H ₈吸附速率和更好的氧化活性。此外，CeO ₂ @Co ₃ O ₄催化剂显示出优异的热稳定性，并且对5vol ％H的耐受性强在300  ^o C和400  ^o C时₂ O和5 vol％CO _2。我们的策略可以通过构造一维金属氧化物核壳来催化活性氧的氧化，从而为形态工程学提供新的见解，从而促进活性氧的迁移率。挥发性有机化合物。