Herein, CeO₂ catalysts with nanotube, nanobelt, and wire-in-nanotube morphologies were successfully fabricated by a facile single spinneret electrospinning technique. And catalytic activity of these electrospun CeO₂ nanomaterials were evaluated by toluene catalytic combustion reaction. Among the three morphologies of CeO₂ catalysts, CeO₂ nanobelt (CeO₂-NB) presented the best toluene catalytic combustion performance (T_90% = 230 °C) at WHSV = 60,000 mL g⁻¹ h⁻¹, also exhibited the lowest activation energy (E_a = 80.2 kJ/mol). Based on the characterization by TEM, XRD, BET, SEM, XPS, Raman spectroscopy, H₂-TPR, and O₂-TPD results, the high catalytic activity of CeO₂-NB catalyst was attributed to its porous nanobelt morphology with larger specific surface area and the abundance of surface oxygen vacancies. Furthermore, the CeO₂-NB catalysts presented an excellent durability by longtime on-stream test (as well as presence of 5% vol. water vapor), suggesting its great potential for practical air pollution control application.

本文中，通过简便的单喷丝板静电纺丝技术成功地制备了具有纳米管，纳米带和纳米管内线形态的CeO ₂催化剂。并通过甲苯催化燃烧反应评价了这些电纺CeO ₂纳米材料的催化活性。在三种CeO ₂催化剂形态中，CeO ₂纳米带（CeO ₂ -NB  ）在WHSV = 60,000 mL g ^-1 h ^-1时表现出最佳的甲苯催化燃烧性能（T _90％ = 230°C），也表现出最低的性能。活化能（E _a  = 80.2 kJ / mol）。基于TEM，XRD，BET，SEM，XPS，拉曼光谱，H₂ -TPR和O ₂ -TPD结果表明，CeO ₂ -NB催化剂的高催化活性归因于其多孔纳米带的形貌，具有较大的比表面积和大量的表面氧空位。此外，CeO ₂ -NB催化剂通过长时间的在线测试（以及存在5％体积的水蒸气）表现出出色的耐久性，表明其在实际控制空气污染方面的巨大潜力。