Skip to content

Research at St Andrews

Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property

Research output: Contribution to journalArticlepeer-review

Standard

Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property. / Huang, Xiubing; Zhao, Guixia; Chang, Yueqi; Wang, Ge; Irvine, John T. S.

In: Applied Surface Science, Vol. 440, 15.05.2018, p. 20-28.

Research output: Contribution to journalArticlepeer-review

Harvard

Huang, X, Zhao, G, Chang, Y, Wang, G & Irvine, JTS 2018, 'Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property', Applied Surface Science, vol. 440, pp. 20-28. https://doi.org/10.1016/j.apsusc.2017.12.197

APA

Huang, X., Zhao, G., Chang, Y., Wang, G., & Irvine, J. T. S. (2018). Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property. Applied Surface Science, 440, 20-28. https://doi.org/10.1016/j.apsusc.2017.12.197

Vancouver

Huang X, Zhao G, Chang Y, Wang G, Irvine JTS. Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property. Applied Surface Science. 2018 May 15;440:20-28. https://doi.org/10.1016/j.apsusc.2017.12.197

Author

Huang, Xiubing ; Zhao, Guixia ; Chang, Yueqi ; Wang, Ge ; Irvine, John T. S. / Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property. In: Applied Surface Science. 2018 ; Vol. 440. pp. 20-28.

Bibtex - Download

@article{d78e652fe08049f6b9f46760ada797c1,
title = "Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property",
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.",
keywords = "CeO2-δ, β-MnO2, Oxygen transfer, Synergetic effect",
author = "Xiubing Huang and Guixia Zhao and Yueqi Chang and Ge Wang and Irvine, {John T. S.}",
note = "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.",
year = "2018",
month = may,
day = "15",
doi = "10.1016/j.apsusc.2017.12.197",
language = "English",
volume = "440",
pages = "20--28",
journal = "Applied Surface Science",
issn = "0169-4332",
publisher = "Elsevier",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Nanocrystalline CeO2-δ coated β-MnO2 nanorods with enhanced oxygen transfer property

AU - Huang, Xiubing

AU - Zhao, Guixia

AU - Chang, Yueqi

AU - Wang, Ge

AU - Irvine, John T. S.

N1 - 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.

PY - 2018/5/15

Y1 - 2018/5/15

N2 - 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.

AB - 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.

KW - CeO2-δ

KW - β-MnO2

KW - Oxygen transfer

KW - Synergetic effect

U2 - 10.1016/j.apsusc.2017.12.197

DO - 10.1016/j.apsusc.2017.12.197

M3 - Article

VL - 440

SP - 20

EP - 28

JO - Applied Surface Science

JF - Applied Surface Science

SN - 0169-4332

ER -

Related by author

  1. Achieving strong coherency for a composite electrode via one-pot method with enhanced electrochemical performance in reversible solid oxide cells

    Tian, Y., Wang, W., Liu, Y., Naden, A., Xu, M., Wu, S., Chi, B., Pu, J. & Irvine, J. T. S., 19 Mar 2021, In: ACS Catalysis. 11, 6, p. 3704-3714 11 p.

    Research output: Contribution to journalArticlepeer-review

  2. Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation

    Umar, A., Neagu, D. & Irvine, J. T. S., 1 Mar 2021, In: Biofuel Research Journal. 8, 1, p. 1342-1350 9 p.

    Research output: Contribution to journalArticlepeer-review

  3. Non-stoichiometry, structure and properties of proton-conducting perovskite oxides

    Li, S. & Irvine, J. T. S., Mar 2021, In: Solid State Ionics. 361, 115571.

    Research output: Contribution to journalReview articlepeer-review

  4. Upscaling of co-impregnated La0.20Sr0.25Ca0.45TiO3 anodes for solid oxide fuel cells: a progress report on a decade of academic-industrial collaboration

    Price, R., Cassidy, M., Grolig, J. G., Longo, G. G., Weissen, U. G., Mai, A. G. & Irvine, J. T. S., 12 Feb 2021, In: Advanced Energy Materials. Early View, 21 p., 2003951.

    Research output: Contribution to journalReview articlepeer-review

  5. Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: electrical and electrochemical performance

    Ferrel-Alvarez, A. C., Domínguez-Crespo, M. A., Cong, H., Torres-Huerta, A. M., Palma-Ramírez, D. & Irvine, J. T. S., 15 Jan 2021, In: Journal of Alloys and Compounds. 851, 156882.

    Research output: Contribution to journalArticlepeer-review

Related by journal

  1. Observation of relaxor-ferroelectric behavior in gallium ferrite thin films

    Dugu, S., Bhattarai, M. K., Kumari, S., Instan, A. A., Pradhan, D. K., Holcomb, M., Scott, J. F. & Katiyar, R. S., 1 Sep 2020, In: Applied Surface Science. 523, 146459.

    Research output: Contribution to journalArticlepeer-review

  2. Degradation of the chemotherapy drug 5-fluorouracil on medical-grade silver surfaces

    Risinggård, H. K., Cooil, S., Mazzola, F., Hu, D., Kjærvik, M., Østli, E. R., Patil, N., Preobrajenski, A., Evans, D. A., Breiby, D. W., Trinh, T. T. & Wells, J. W., 30 Mar 2018, In: Applied Surface Science. 435, p. 1213-1219

    Research output: Contribution to journalArticlepeer-review

  3. Electrochemical properties of composite cathodes using Sm doped layered perovskite for intermediate temperature-operating solid oxide fuel cell

    Baek, S-W., Azad, A. K., Irvine, J. T. S., Choi, W. S., Kang, H. & Kim, J. H., 28 Feb 2018, In: Applied Surface Science. 432, B, p. 272-277

    Research output: Contribution to journalArticlepeer-review

  4. Electrodeposition of gold templated by patterned thiol monolayers

    She, Z., Di Falco, A., Hähner, G. & Buck, M., 15 Jun 2016, In: Applied Surface Science. 373, p. 51-60

    Research output: Contribution to journalArticlepeer-review

ID: 252010479

Top