Effect of Carbon Support on the Electrocatalytic Performance of the Pt Nanoparticles Toward Oxidation of Formic Acid

Habibi, Biuck; Imanzadeh, Hamideh; Shishavan, Yalda Haghighi; Amiri, Mandana

doi:10.1007/s10562-019-03018-9

Cited by 8 publications

(9 citation statements)

References 40 publications

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“…Other basic Pt electrodes configurations are Pt net [57], Pt bead [58] and Pt single-crystalline electrodes, especially those containing the (111) exposed to the solution given the greater tolerance to CO poisoning of this specific lattice plane [59,60,81]. While Pt disk electrodes have the advantage of simplicity and ease of use, several authors employ Pt nanoparticles deposited on an electrode (typically glassy carbon disk) as reference materials to compare their further developed electrocatalysts [62,64,65,72]. These Pt nanoparticles usually show higher electrocatalytic activity than Pt disks under comparable conditions.…”

Section: Monometallic Pt Catalystsmentioning

confidence: 99%

“…For instance, Pisarek et al tested Pt and Pd nanoparticles (0.2 mg metal cm −2 ) deposited by magnetron sputtering on TiO 2 nanotubes [73], and they obtained a similar maximum current density (around 14 mA cm −2 ) with the Pt/TiO 2 catalyst when compared to Pd/TiO 2 but at a significantly higher potential (1.0 and 0.4 V vs. RHE for Pt/TiO 2 and Pd/TiO 2 , respectively) under the same operation conditions (0.5 M HCOOH + 0.5 M H 2 SO 4 ). by optimizing the operation conditions with the Pt/CNP catalyst, the authors concluded that the maximum current density is reached with a formic acid concentration of 1 M, above which the catalyst performance is limited by saturation by adsorbed CO [62]. Different supports than carbon are also employed to deposit the Pt nanoparticles [62].…”

Section: Monometallic Pt Catalystsmentioning

confidence: 99%

“…These Pt nanoparticles usually show higher electrocatalytic activity than Pt disks under comparable conditions. For instance, Habibi et al electrochemically deposited Pt nanoparticles on a ceramic carbon electrode and obtained a maximum current density of around 11 mA cm −2 at 0.8 V vs. RHE, with 0.5 M HCOOH + 0.1 M H 2 SO 4 [ 62 ]. Yang et al [ 52 ].…”

Section: Platinum For Formic Acid/formate Electrooxidationmentioning

confidence: 99%

“…This was attributed to the beneficial influence of the Pt-O species generated by ALD, which provided a large number of active sites to oxidize CO, like Pt-O or Pt-(OH). Other carbon supports were explored by Habibi et al [ 62 ], who modified carbon electrodes by depositing either carbon nanoparticles (CNP) or reduced graphene oxide (RGO) prior to the dispersion of Pt nanoparticles on this support and evaluated their electrocatalytic activity in formic acid oxidation in acidic media. Both catalysts showed very significant peak current densities, 27.7 and 38.9 mA cm −2 at 0.9 V vs. RHE with the platinum nanoparticles deposited on RGO- and CNP-based electrodes, respectively.…”

Section: Platinum For Formic Acid/formate Electrooxidationmentioning

confidence: 99%

“…Along with another catalyst based on PtBi alloy [ 69 ], this catalyst of Pt nanoparticles on CNP showed the lowest onset potential for formic acid oxidation found in the literature with Pt-based catalysts, around 0.1 V vs. RHE, which makes it competitive with Pd-based catalysts in acidic media (vide infra). Additionally, by optimizing the operation conditions with the Pt/CNP catalyst, the authors concluded that the maximum current density is reached with a formic acid concentration of 1 M, above which the catalyst performance is limited by saturation by adsorbed CO [ 62 ]. Different supports than carbon are also employed to deposit the Pt nanoparticles [ 62 ].…”

Section: Platinum For Formic Acid/formate Electrooxidationmentioning

confidence: 99%

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Benchmarking Catalysts for Formic Acid/Formate Electrooxidation

et al. 2021

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Energy production and consumption without the use of fossil fuels are amongst the biggest challenges currently facing humankind and the scientific community. Huge efforts have been invested in creating technologies that enable closed carbon or carbon neutral fuel cycles, limiting CO2 emissions into the atmosphere. Formic acid/formate (FA) has attracted intense interest as a liquid fuel over the last half century, giving rise to a plethora of studies on catalysts for its efficient electrocatalytic oxidation for usage in fuel cells. However, new catalysts and catalytic systems are often difficult to compare because of the variability in conditions and catalyst parameters examined. In this review, we discuss the extensive literature on FA electrooxidation using platinum, palladium and non-platinum group metal-based catalysts, the conditions typically employed in formate electrooxidation and the main electrochemical parameters for the comparison of anodic electrocatalysts to be applied in a FA fuel cell. We focused on the electrocatalytic performance in terms of onset potential and peak current density obtained during cyclic voltammetry measurements and on catalyst stability. Moreover, we handpicked a list of the most relevant examples that can be used for benchmarking and referencing future developments in the field.

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Section: Monometallic Pt Catalystsmentioning

confidence: 99%

Section: Monometallic Pt Catalystsmentioning

confidence: 99%

Section: Platinum For Formic Acid/formate Electrooxidationmentioning

confidence: 99%

Section: Platinum For Formic Acid/formate Electrooxidationmentioning

confidence: 99%

Section: Platinum For Formic Acid/formate Electrooxidationmentioning

confidence: 99%

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Benchmarking Catalysts for Formic Acid/Formate Electrooxidation

et al. 2021

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Carbon black‐heteroatom‐doped graphene aerogel hybrid supported platinum nanoparticles as electrocatalysts for oxidation of methanol and formic acid

Çögenli

Yurtcan

2022

Intl J of Energy Research

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Summary Supported catalysts are generally used for electrochemical reactions in fuel cells. Due to their superior properties in these reactions, platinum nanoparticles are preferred over carbon‐structured support materials. Commercial carbon support material such as carbon black (Vulcan XC‐72) is widely used alone for the deposition of platinum particles on the surface. But this support material when used alone is easily affected from the operating conditions of methanol and formic acid oxidation resulting from chemical reaction. Graphene aerogels (GA) are the graphene‐based materials that are important discoveries in nanotechnology, recently. These materials are being investigated as support materials in fuel cell catalysts. In this study, carbon black was used together with GA and heteroatom‐doped GA, as support materials. Three different hybrid carbon (50:50) supported Pt nanoparticles, namely, Pt/GA‐C (carbon black and GA), Pt/NGA‐C (carbon black‐ and nitrogen‐doped GA), and Pt/BGA‐C (carbon black‐ and boron‐doped GA) were synthesized by using, first, the modified Hummers method, second, hydrothermal treatment for support materials, and microwave irradiation method for Pt nanoparticles formation on support materials. The hybrid supported catalysts were characterized using scanning electron microscope, energy dispersion spectroscopy, BET, X‐ray diffractometer, transmission electron microscope, Raman, X‐ray photoelectron spectroscopy, inductively coupled plasma mass spectrometry. The catalysts analysis was studied using cyclic voltammetry, impedance, and short‐term durability. The Pt/BGA‐C catalyst showed the highest catalytic activity for both formic acid and methanol oxidation.

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