Journal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume 91, Issue -, Pages 316-322Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2018.05.036
Keywords
Plasmonic nanostructures; SPR effect; Hollow Pt-Ag dendrites; Ethylene glycol oxidation; Visible light
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Funding
- National Natural Science Foundation of China [51373111]
- Suzhou Industry [SYG201636]
- project of Scientific and Technologic Infrastructure of Suzhou [SZS201708]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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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 (Pt-1-Ag-1) 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/cm(2), 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. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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