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CeO2 nanorods with high energy surfaces as electrocatalytical supports for methanol electrooxidation

Journal Article


Abstract

  • Uniform CeO2 nanorods (CeO2-r) and CeO2 nanoparticles (CeO2-p) are synthesized by hydrothermal method and are used as supports to load Pt nanoparticles (indexed as Pt/CeO2-r & Pt/CeO2-p) for methanol electrooxidation. HRTEM images indicate that the synthesized CeO2-r are covered by (1 0 0) and (1 1 0) facets which own higher surface energy compared to CeO2-p with (1 1 1) facets. Electrochemical characterizations demonstrate Pt/CeO2-r shows excellent specific activity which is 1.6 and 10 times higher than Pt/CeO2-p and commercial Pt/C (indexed as Pt/C-JM) towards electrooxidation of methanol. By in-situ FTIR spectroscopic investigation, much higher CO2 productivity is observed at low potential on Pt/CeO2-r that implies strong anti-poisoning ability during methanol electrooxidation. The significant improved electrocatalytical performance is attributed to the existence of CeO2 nanorods with high energy surfaces.

UOW Authors

  •   Zhang, Binwei (external author)

Publication Date

  • 2015

Citation

  • Qu, X. M., You, L. X., Tian, X. C., Zhang, B. W., Mahadevan, G. D., Jiang, Y. X., & Sun, S. G. (2015). CeO2 nanorods with high energy surfaces as electrocatalytical supports for methanol electrooxidation. Electrochimica Acta, 182, 1078-1084. doi:10.1016/j.electacta.2015.10.025

Scopus Eid

  • 2-s2.0-84944243066

Start Page

  • 1078

End Page

  • 1084

Volume

  • 182

Issue

Place Of Publication

Abstract

  • Uniform CeO2 nanorods (CeO2-r) and CeO2 nanoparticles (CeO2-p) are synthesized by hydrothermal method and are used as supports to load Pt nanoparticles (indexed as Pt/CeO2-r & Pt/CeO2-p) for methanol electrooxidation. HRTEM images indicate that the synthesized CeO2-r are covered by (1 0 0) and (1 1 0) facets which own higher surface energy compared to CeO2-p with (1 1 1) facets. Electrochemical characterizations demonstrate Pt/CeO2-r shows excellent specific activity which is 1.6 and 10 times higher than Pt/CeO2-p and commercial Pt/C (indexed as Pt/C-JM) towards electrooxidation of methanol. By in-situ FTIR spectroscopic investigation, much higher CO2 productivity is observed at low potential on Pt/CeO2-r that implies strong anti-poisoning ability during methanol electrooxidation. The significant improved electrocatalytical performance is attributed to the existence of CeO2 nanorods with high energy surfaces.

UOW Authors

  •   Zhang, Binwei (external author)

Publication Date

  • 2015

Citation

  • Qu, X. M., You, L. X., Tian, X. C., Zhang, B. W., Mahadevan, G. D., Jiang, Y. X., & Sun, S. G. (2015). CeO2 nanorods with high energy surfaces as electrocatalytical supports for methanol electrooxidation. Electrochimica Acta, 182, 1078-1084. doi:10.1016/j.electacta.2015.10.025

Scopus Eid

  • 2-s2.0-84944243066

Start Page

  • 1078

End Page

  • 1084

Volume

  • 182

Issue

Place Of Publication