Surface plasmon enhanced ethylene glycol electrooxidation based on hollow platinum-silver nanodendrites structures.

Xu, Hui; Song, Pingping; Fernandez, Carlos; Wang, Jin; Shiraishi, Yukihide; Wang, Caiqin; Du, Yukou

Abstract

The surface plasmon resonance (SPR) effect on noble metals to convert solar energy into chemical has attracted a lot of interest. However, the lack of highly efficient photocatalysts is still the forbidden obstacle as well as their large-scale development. Therefore, we focus on plasmon resonance enhanced electrocatalytic oxidation of liquid fuel employing photocatalysts to develop unique hollow platinum-silver (Pt-Ag) nanocrystals. The hollow Pt-Ag is formed of nanodendrites (Pt1-Ag1) which display a great enhancement in catalytic activity towards ethylene glycol oxidation with the mass and specific activity found to be: 7045.2?mA/mg and 14.1?mA/cm2, respectively. This is due to: the SPR effect, efficient electronic distribution and synergistic properties, together with the unique hollow dendritic nanostructures. Impressively, the SPR effect also induces the optimum Pt-Ag nanocatalsyst under visible light irradiation conditions to display 1.7-fold enhancements in catalytic activity compared to that under dark conditions. In addition, 6.2 and 7.0-fold enhancements were obtained when the optimized Pt-Ag was employed as photoelectrocatalyst compared to the commercial Pt/C. Therefore, we present a unique catalyst which produces a high catalytic activity and long-term stability compared to those previously reported. More importantly, we also introduce a promising approach towards the designing of a plasmonic metal nanocatalyst with ideal nanostructures for liquid fuel oxidations.

Citation

XU, H., SONG, P., FERNANDEZ, C., WANG, J., SHIRAISHI, Y., WANG, C. and DU, Y. 2018. Surface plasmon enhanced ethylene glycol electrooxidation based on hollow platinum-silver nanodendrites structures. Journal of the Taiwan Institute of Chemical Engineers [online], 91, pages 316-322. Available from: https://doi.org/10.1016/j.jtice.2018.05.036

• Journal Article Type: Article
• Acceptance Date: May 23, 2018
• Online Publication Date: Jun 19, 2018
• Publication Date: Oct 31, 2018
• Deposit Date: Jun 26, 2018
• Publicly Available Date: Jun 20, 2019
• Journal: Journal of the Taiwan Institute of Chemical Engineers
• Print ISSN: 1876-1070
• Electronic ISSN: 1876-1089
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 91
• Pages: 316-322
• DOI: https://doi.org/10.1016/j.jtice.2018.05.036
• Keywords: Plasmonic nanostructures; SPR effect; Hollow PtAg dendrites; Ethylene glycol oxidation; Visible light
• Public URL: http://hdl.handle.net/10059/2966