Effect of Electrochemical Surface Pretreatment on Electro-Catalytic Activity of Copper for Ethanol Oxidation in Alkaline Media

Panah, Niloufar Bahrami; Danaee, I.; Ghamsari, Zohreh Ghorbanizadeh

doi:10.3103/s1068375519060085

Cited by 6 publications

(3 citation statements)

References 36 publications

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“…Current density recorded in the presence of methanol was 130 mA cm −2 , which constituted 10 fold increase as compared with solution without methanol addition. Current density reported by Roy et al [134] is higher than the ones reported earlier by other authors [133,135,140], which can be attributed to relatively higher electrochemically active surface area due to the use of Ni foam. Such electrode showed 95% retention of the current density after 2000 s.…”

Section: Direct Methanol Fuel Cellmentioning

confidence: 56%

“…More recently copper and copper-derived materials attracted scientific interest as anodes for DMFCs, due to their high sensitivity and reactivity toward oxygen [133]. Copper is much less expensive and abundant in nature as compared with precious elements with superior electrochemical activity, such as Pt, Ru, and Pd [134].…”

Section: Direct Methanol Fuel Cellmentioning

confidence: 99%

“…The methanol oxidation started at potential of 550 mV vs. Ag|AgCl through a mediated electron transfer mechanism catalyzed by Cu III species formed at the same potential region. Panah et al [133] showed, that the morphology of the Cu-derived anode is an important factor for the efficiency of the catalyst in the methanol fuel cell. They pointed out that the cyclic voltammetry polarization in 1 M NaOH led to increased surface roughness of Cu, due to formation of copper oxide layer, and subsequently increased electrocatalytic performance for ethanol oxidation in alkaline medium.…”

Section: Direct Methanol Fuel Cellmentioning

confidence: 99%

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Nanostructured Anodic Copper Oxides as Catalysts in Electrochemical and Photoelectrochemical Reactions

et al. 2020

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Recently, nanostructured copper oxides formed via anodizing have been intensively researched due to their potential catalytic applications in emerging issues. The anodic Cu2O and CuO nanowires or nanoneedles are attractive photo- and electrocatalysts since they show wide array of desired electronic and morphological features, such as highly-developed surface area. In CO2 electrochemical reduction reaction (CO2RR) copper and copper-based nanostructures indicate unique adsorption properties to crucial reaction intermediates. Furthermore, anodized copper-based materials enable formation of C2+ hydrocarbons and alcohols with enhanced selectivity. Moreover, anodic copper oxides provide outstanding turnover frequencies in electrochemical methanol oxidation at lowered overpotentials. Therefore, they can be considered as precious metals electrodes substituents in direct methanol fuel cells. Additionally, due to the presence of Cu(III)/Cu(II) redox couple, these materials find application as electrodes for non-enzymatic glucose sensors. In photoelectrochemistry, Cu2O-CuO heterostructures of anodic copper oxides with highly-developed surface area are attractive for water splitting. All the above-mentioned aspects of anodic copper oxides derived catalysts with state-of-the-art background have been reviewed within this paper.

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