Abstract：
: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 (T90% = 230 °C) at WHSV = 60,000 mL g-1 h-1, also exhibited the lowest activation energy (Ea = 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.
journal_name
Chemospherejournal_title
Chemosphereauthors
Yan D,Mo S,Sun Y,Ren Q,Feng Z,Chen P,Wu J,Fu M,Ye Ddoi
10.1016/j.chemosphere.2020.125860subject
Has Abstractpub_date
2020-05-01 00:00:00pages
125860eissn
0045-6535issn
1879-1298pii
S0045-6535(20)30051-5journal_volume
247pub_type
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