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Open AccessArticle

Salt-Templated Platinum-Copper Porous Macrobeams for Ethanol Oxidation

1
Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA
2
Photonics Research Center, United States Military Academy, West Point, NY 10996, USA
3
United States Army Research Laboratory-Sensors and Electron Devices Directorate, Adelphi, MD 20783, USA
4
U.S. Army Combat Capabilities Development Command-Armaments Center, Watervliet, NY 12189, USA
*
Author to whom correspondence should be addressed.
Catalysts 2019, 9(8), 662; https://doi.org/10.3390/catal9080662
Received: 1 July 2019 / Revised: 29 July 2019 / Accepted: 30 July 2019 / Published: 2 August 2019
Platinum nanomaterials provide an excellent catalytic activity for diverse applications and given its high cost, platinum alloys and bi-metallic nanomaterials with transition metals are appealing for low cost and catalytic specificity. Here the synthesis of hierarchically porous Pt–Cu macrobeams and macrotubes templated from Magnus’s salt derivative needles is demonstrated. The metal composition was controlled through the combination of [PtCl4]2− with [Pt(NH3)4]2+ and [Cu(NH3)4]2+ ions in different ratios to form salt needle templates. Polycrystalline Pt–Cu porous macrotubes and macrobeams 10’ s–100’ s μm long with square cross-sections were formed through chemical reduction with dimethylamine borane (DMAB) and NaBH4, respectively. Specific capacitance as high as 20.7 F/g was demonstrated with cyclic voltammetry. For macrotubes and macrobeams synthesized from Pt2−:Pt2+:Cu2+ salt ratios of 1:1:0, 2:1:1, 3:1:2, and 1:0:1, DMAB reduced 3:1:2 macrotubes demonstrated the highest ethanol oxidation peak currents of 12.0 A/g at 0.5 mV/s and is attributed to the combination of a highly porous structure and platinum enriched surface. Salt templates with electrochemical reduction are suggested as a rapid, scalable, and tunable platform to achieve a wide range of 3-dimensional porous metal, alloy, and multi-metallic nanomaterials for catalysis, sensor, and energy storage applications. View Full-Text
Keywords: platinum; copper; nanomaterials; porous; catalysis; fuel cells platinum; copper; nanomaterials; porous; catalysis; fuel cells
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MDPI and ACS Style

Burpo, F.J.; Nagelli, E.A.; Losch, A.R.; Bui, J.K.; Forcherio, G.T.; Baker, D.R.; McClure, J.P.; Bartolucci, S.F.; Chu, D.D. Salt-Templated Platinum-Copper Porous Macrobeams for Ethanol Oxidation. Catalysts 2019, 9, 662.

AMA Style

Burpo FJ, Nagelli EA, Losch AR, Bui JK, Forcherio GT, Baker DR, McClure JP, Bartolucci SF, Chu DD. Salt-Templated Platinum-Copper Porous Macrobeams for Ethanol Oxidation. Catalysts. 2019; 9(8):662.

Chicago/Turabian Style

Burpo, F. J.; Nagelli, Enoch A.; Losch, Anchor R.; Bui, Jack K.; Forcherio, Gregory T.; Baker, David R.; McClure, Joshua P.; Bartolucci, Stephen F.; Chu, Deryn D. 2019. "Salt-Templated Platinum-Copper Porous Macrobeams for Ethanol Oxidation" Catalysts 9, no. 8: 662.

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