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Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property
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dc.contributor.author | Huang, Xiubing | |
dc.contributor.author | Zhao, Guixia | |
dc.contributor.author | Chang, Yueqi | |
dc.contributor.author | Wang, Ge | |
dc.contributor.author | Irvine, John T. S. | |
dc.date.accessioned | 2019-01-09T00:33:32Z | |
dc.date.available | 2019-01-09T00:33:32Z | |
dc.date.issued | 2018-05-15 | |
dc.identifier | 252010479 | |
dc.identifier | d78e652f-e080-49f6-b9f4-6760ada797c1 | |
dc.identifier | 85041392618 | |
dc.identifier | 000427461000004 | |
dc.identifier.citation | Huang , X , Zhao , G , Chang , Y , Wang , G & Irvine , J T S 2018 , ' Nanocrystalline CeO 2-δ coated β-MnO 2 nanorods with enhanced oxygen transfer property ' , Applied Surface Science , vol. 440 , pp. 20-28 . https://doi.org/10.1016/j.apsusc.2017.12.197 | en |
dc.identifier.issn | 0169-4332 | |
dc.identifier.other | RIS: urn:5CE0089677051A4744557F71986B6439 | |
dc.identifier.other | ORCID: /0000-0002-8394-3359/work/68280796 | |
dc.identifier.uri | https://hdl.handle.net/10023/16805 | |
dc.description | Prof. Ge Wang and Dr. Xiubing Huang acknowledged financial support from the National Key Research and Development Program of China (Grant No. 2016YFB0601100), and Fundamental Research Funds for the Central Universities (FRF-TP-16-028A1). Prof. John T. S. Irvine acknowledged funding from the Engineering and Physical Research Council for research award EP/K036769/1 and Platform Grant EP/K015540/1, the Royal Society Wolfson Merit Award, WRM 2012/R2. | en |
dc.description.abstract | In this research, β-MnO2 nanorods were synthesized by a hydrothermal method, followed by a facile precipitation method to obtain nanocrystalline CeO2-δ coated β-MnO2 nanorods. The as-prepared samples were characterized by XRD, HRTEM, FESEM, XPS and in-situ high-temperature XRD. The HRTEM results show that well dispersed CeO2-δ nanocrystals sized about 5 nm were coated on the surface of β-MnO2 nanorods. The oxygen storage and transfer property of as-synthesized materials were evaluated using TGA under various atmospheres (air, pure N2, and 5%H2/95%Ar). The TGA results indicate that CeO2-δ modification could favour the reduction of Mn4+ to Mn3+ and/or Mn2+ at lower temperature as compared with pure β-MnO2 nanorods and the physically mixed CeO2-δ-β-MnO2 under low oxygen partial pressure conditions (i.e., pure N2, 5%H2/95%Ar). Specifically, CeO2-δ@β-MnO2 sample can exhibit 7.5 wt% weight loss between 100 and 400 °C under flowing N2 and 11.4 wt% weight loss between 100 and 350 °C under flowing 5%H2/95%Ar. During the reduction process under pure N2 or 5%H2/95%Ar condition, the oxygen ions in β-MnO2 nanorods are expected to be released to the surroundings in the form of O2 or H2O with the coated CeO2-δ nanocrystals acting as mediator as inferred from the synergistic effect between the well-interacted CeO2-δ nanocrystals and β-MnO2 nanorods. | |
dc.format.extent | 1737833 | |
dc.language.iso | eng | |
dc.relation.ispartof | Applied Surface Science | en |
dc.subject | CeO2-δ | en |
dc.subject | β-MnO2 | en |
dc.subject | Oxygen transfer | en |
dc.subject | Synergetic effect | en |
dc.subject | QD Chemistry | en |
dc.subject | NDAS | en |
dc.subject.lcc | QD | en |
dc.title | Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | The Royal Society | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.identifier.doi | https://doi.org/10.1016/j.apsusc.2017.12.197 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2019-01-09 | |
dc.identifier.grantnumber | EP/K036769/1 | en |
dc.identifier.grantnumber | EP/K015540/1 | en |
dc.identifier.grantnumber | WRMA 2012/R2 | en |
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