On the promotional effect of Cu on Pt for hydrazine electrooxidation in alkaline medium

Crisafulli, Rudy; Barros, Vanine V. Silva de; Oliveira, Francisca Elenice Rodrigues de; Rocha, Thairo de Araujo; Zignani, Sabrina Campagna; Spadaro, Lorenzo; Palella, Alessandra; Dias, José A.; Linares, J.

doi:10.1016/j.apcatb.2018.05.016

Cited by 51 publications

(16 citation statements)

References 55 publications

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“…The spectrum of Cu2p (Figure 4a) consisted of two spin-orbit components at binding energies of 934.4 eV (2p3/2) and 954.6 eV (2p1/2) and two Cu 2+ shake-up satellites. The shape of the spectrum and the peak positions denotes the presence of Cu(II) species at the surface of CuOxAg/KB system, which are consistent with the structure of cupric oxide (CuO) [35][36][37]. The binding energy position of Ag 3d5/2 (368.6 eV) and 3d3/2 (374.6 eV) core levels (Figure 4b) proves the valence state of "zero" of the metal (Ag0) [38] at the surface of the catlyst.…”

Section: Resultssupporting

confidence: 71%

Bifunctional CuO-Ag/KB Catalyst for the Electrochemical Reduction of CO2 in an Alkaline Solid-State Electrolysis Cell

et al. 2022

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The conversion of carbon dioxide into value-added products is progressively gaining momentum. Several strategies have been used to develop technologies that reduce the net emissions of CO2. The utilisation of CO2 could either contribute to carbon recycling. In this paper, the transformation of CO2 was investigated in a coelectrolysis cell constituted of a solid polymer electrolyte, a carbon-supported CuO-Ag composite cathode and NiFeOx anode. Noncritical raw materials were synthesised according to the oxalate method and investigated in an alkaline environment. Low-carbon alcohols were obtained with a specific selectivity for ethanol and methanol over the CuO-Ag/KB cathode. The reaction rates at 1.6 V and 1.8 V cell voltages have been determined in steady-state experiments using NaHCO3 supporting electrolyte recirculated at the anode.

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Section: Resultssupporting

confidence: 71%

Bifunctional CuO-Ag/KB Catalyst for the Electrochemical Reduction of CO2 in an Alkaline Solid-State Electrolysis Cell

et al. 2022

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“…Crisafulli et al 173 used Cu to produce PtCu/C electrocatalysts at specific ratios, where N 2 H 4 and Vulcan XC‐72R carbon black act as reducing agents and support material, respectively. The optimum ratio was Pt53Cu47/C, which greatly affected the catalytic performance and resulted in higher efficiency than commercial Pt/C in DHFCs.…”

Section: Class Of Dlfcmentioning

confidence: 99%

Progress and challenges: Review for direct liquid fuel cell

et al. 2021

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Summary Direct liquid fuel cell (DLFC) is one of the leading fuel cell types due to their great features of superior energy density, modest configuration, small size in fuel container, immediate boosting, and effortless storage and carriage. Commercially used liquid fuel types are prepared using alcohols, such as methanol or ethanol, glycol, and acids. DLFCs face great challenges although they are potentially far‐reaching depending on the expensive catalysts and the use of high‐loading catalyst. More questions that should be addressed to ensure excellent DLFC performance include cathode flooding, fuel crossover, numerous side yield production, fuel security, and unverified elongated‐duration robustness. Further studies need to be carried out to ensure the continuous improvement of the quality of DLFCs' performance and their penetration in the commercial market. To date, direct liquid fuel cells made of methanol and ethanol have been successfully produced in commercial scale, but other types of DLFCs are still under study. In this review, introduction to DLFC will be discussed by covering work and commercialization as well as recent progress and challenges encountered.

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“…[21] Various catalysts have been developed for direct hydrazine fuel cells as an anode catalyst. For example, CuÀ Ni, [22] PtCu/C, [23] NPGL, [24,25] AuPdDANCs, [26,27] Pd/CNT [28] were applied in fuel cells. In addition, Abdolmaleki et al was used a simple direct hydrazine-hydrogen peroxide fuel cell based on the Au/C catalyzed for cathode and the Co@Au/C core-shell for anode.…”

Section: Introductionmentioning

confidence: 99%

“…Various catalysts have been developed for direct hydrazine fuel cells as an anode catalyst. For example, Cu−Ni, [22] PtCu/C, [23] NPGL, [24,25] AuPdDANCs, [26,27] Pd/CNT [28] were applied in fuel cells. In addition, Abdolmaleki et al .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Novel Artemisinin Derivatives and Their Electrochemical Properties

et al. 2022

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In present, new artemisinin-based organic compounds (1-6) are designed and synthesized in excellent yields (up to 97 %) via Steglich Esterification reactions. All new artemisinin derivatives are tested as anode catalysts for hydrazine electrooxidation reactions with electrochemical methods in 1 M KOH/ 0.5 M N 2 H 4 solution. Hybrid molecule 1 exhibits the best catalytic activity in hydrazine electrooxidation reaction with 2.28 mA cm À 2 value. Moreover, response surface methodology (RSM) is applied to investigate of optimum electrode conditions. By using optimum conditions, hydrazine electrooxidation is obtained as 3.55324 mA cm À 2 . As a result, artemisininbased hybrid compounds may be alternative, and nextgeneration anode catalyst for direct hydrazine fuel cells.

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On the promotional effect of Cu on Pt for hydrazine electrooxidation in alkaline medium

Cited by 51 publications

References 55 publications

Bifunctional CuO-Ag/KB Catalyst for the Electrochemical Reduction of CO2 in an Alkaline Solid-State Electrolysis Cell

Bifunctional CuO-Ag/KB Catalyst for the Electrochemical Reduction of CO2 in an Alkaline Solid-State Electrolysis Cell

Progress and challenges: Review for direct liquid fuel cell

Synthesis of Novel Artemisinin Derivatives and Their Electrochemical Properties

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