An Enhanced Oxidation of Formate on PtNi/Ni Foam Catalyst in an Alkaline Medium

Nacys, Antanas; Šimkūnaitė, Dijana; Balčiūnaitė, Aldona; Zabielaitė, Aušrinė; Upskuvienė, Daina; Šebeka, Benjaminas; Jasulaitienė, Vitalija; Kovalevskij, Vitalij; Norkus, Eugenijus; Tamašauskaitė–Tamašiūnaitė, Loreta

doi:10.3390/cryst12030362

Cited by 11 publications

(10 citation statements)

References 79 publications

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“…Recently, a Pt-coated Ni layer supported on Ni foam (PtNi/Ni foam ) has been proposed for efficient formate electro-oxidation in an alkaline medium [68]. It showed enhanced electrocatalytic activity toward formate electro-oxidation via the direct pathway in an alkaline medium, in contrast to the pure Pt electrode.…”

Section: Introductionmentioning

confidence: 99%

Pt-Coated Ni Layer Supported on Ni Foam for Enhanced Electro-Oxidation of Formic Acid

Nacys,

Simkunaitė,

Balciunaite

et al. 2023

Materials

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A Pt-coated Ni layer supported on a Ni foam catalyst (denoted PtNi/Nifoam) was investigated for the electro-oxidation of the formic acid (FAO) in acidic media. The prepared PtNi/Nifoam catalyst was studied as a function of the formic acid (FA) concentration at bare Pt and PtNi/Nifoam catalysts. The catalytic activity of the PtNi/Nifoam catalysts, studied on the basis of the ratio of the direct and indirect current peaks (jd)/(jnd) for the FAO reaction, showed values approximately 10 times higher compared to those on bare Pt, particularly at low FA concentrations, reflecting the superiority of the former catalysts for the electro-oxidation of FA to CO2. Ni foams provide a large surface area for the FAO, while synergistic effects between Pt nanoparticles and Ni-oxy species layer on Ni foams contribute significantly to the enhanced electro-oxidation of FA via the direct pathway, making it almost equal to the indirect pathway, particularly at low FA concentrations.

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Section: Introductionmentioning

confidence: 99%

Pt-Coated Ni Layer Supported on Ni Foam for Enhanced Electro-Oxidation of Formic Acid

Nacys,

Simkunaitė,

Balciunaite

et al. 2023

Materials

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“…The chemical composition of the carbon samples was analyzed by XPS utilizing a Kratos AXIS Supra+ spectrometer (Kratos Analytical, Manchester, UK) as described in more detail elsewhere [ 40 ].…”

Section: Methodsmentioning

confidence: 99%

Black Liquor and Wood Char-Derived Nitrogen-Doped Carbon Materials for Supercapacitors

Tamašauskaitė–Tamašiūnaitė

Jablonskienė

Šimkūnaitė

et al. 2023

Materials

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Herein, we present a synthesis route for high-efficiency nitrogen-doped carbon materials using kraft pulping residue, black liquor, and wood charcoal as carbon sources. The synthesized nitrogen-doped carbon materials, based on black liquor and its mixture with wood charcoal, exhibited high specific surface areas (SSAs) of 2481 and 2690 m2 g−1, respectively, as well as a high volume of mesopores with an average size of 2.9–4.6 nm. The nitrogen content was approximately 3–4 at% in the synthesized nitrogen-doped carbon materials. A specific capacitance of approximately 81–142 F g−1 was achieved in a 1 M Na2SO4 aqueous solution at a current density of 0.2 A g−1. In addition, the specific capacitance retention was 99% after 1000 cycles, indicating good electrochemical stability.

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“…The prepared hybrid foam catalyst shows good tolerance to CO poisoning and high poison removal capacity. When compared with that of the bare Pt electrode, the reduction current density peak values of the PtNi/Nifoam catalysts are increased by approximately 39.78 and 46.49 times [107] …”

Section: Pt‐based Anodes For Faomentioning

confidence: 95%

Recent Advances in Anode Electrocatalysts for Direct Formic Acid Fuel Cell‐II‐Platinum‐Based Catalysts

Hossain

Alwi

Saleem

et al. 2022

The Chemical Record

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Platinum-based catalysts have a long history of application in formic acid oxidation (FAO). The single metal Pt is active in FAO but expensive, scarce, and rapidly deactivates. Understanding the mechanism of FAO over Pt important for the rational design of catalysts. Pt nanomaterials rapidly deactivate because of the CO poisoning of Pt active sites via the dehydration pathway. Alloying with another transition metal improves the performance of Ptbased catalysts through bifunctional, ensemble, and steric effects. Supporting Pt catalysts on a high-surface-area support material is another technique to improve their overall catalytic activity. This review summarizes recent findings on the mechanism of FAO over Pt and Pt-based alloy catalysts. It also summarizes and analyzes binary and ternary Pt-based catalysts to understand their catalytic activity and structure relationship.

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An Enhanced Oxidation of Formate on PtNi/Ni Foam Catalyst in an Alkaline Medium

Cited by 11 publications

References 79 publications

Pt-Coated Ni Layer Supported on Ni Foam for Enhanced Electro-Oxidation of Formic Acid

Pt-Coated Ni Layer Supported on Ni Foam for Enhanced Electro-Oxidation of Formic Acid

Black Liquor and Wood Char-Derived Nitrogen-Doped Carbon Materials for Supercapacitors

Recent Advances in Anode Electrocatalysts for Direct Formic Acid Fuel Cell‐II‐Platinum‐Based Catalysts

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