Platinum–Iron nanoparticles supported on reduced graphene oxide as an improved catalyst for methanol electro oxidation

Eshghi, Abolfath; Kheirmand, Mehdi; Sabzehmeidani, Mohammad Mehdi

doi:10.1016/j.ijhydene.2018.01.206

Cited by 56 publications

(11 citation statements)

References 44 publications

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“…120 The results of high current density, excellent durability, and good CO poisoning tolerance made the addition of Fe into noble metal alloy a suitable potential for alcohol electrooxidation. 121 Jin et al 122,123 reported on the observation of interdiffused fct Pt-Fe nanocrystals that exhibited threefold higher activity than fcc Pt-Fe catalysts. Fe near Pt atoms in fct structure believed to decrease the binding energy between Pt surface and C O groups, which assisted surface to molecules oxygen transfer.…”

Section: Development Of Pt-based and Pd-based Catalyst With Iron Metalmentioning

confidence: 99%

Research and innovation in the electrocatalyst development toward glycerol oxidation reaction

2021

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Direct glycerol fuel cell (DGFCs) is an interesting type of fuel cell that can produce energy and high-end chemicals using excess and less expensive fuel, glycerol. The commercialization of DGFCs meets with many challenges, especially on its catalyst development. Common catalysts usually tested in DGFCs are platinum-based (Pt) and palladium-based catalyst (Pd). The expensive value of the noble metal such as Pt and Pd becomes a limitation towards the commercialization. This review shows and summarizes numerous improvements achieved on the anode catalyst for GOR to reduce the noble metal dependency while maximizing the activity performance, durability-stability, and GOR yield selectivity on certain valuable chemicals introducing multiple optimized syntheses methods with timesaving and cost-effective benefits. Finally, this review proposes the next direction of catalyst development to be taken in the future based on the recent developments and innovations implemented and tested.

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Section: Development Of Pt-based and Pd-based Catalyst With Iron Metalmentioning

confidence: 99%

Research and innovation in the electrocatalyst development toward glycerol oxidation reaction

2021

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“…Thus, research is focused on alloying with other transition metals that are more inexpensive, such as PtCo, 24 PtMo, 25 PtNi 26 and PtFe 27 . In 2018, Eshghi et al 28 showed that PtFe alloys on a graphene support showed extremely high current density, tolerance for CO poisoning and high durability for methanol electro‐oxidation compared with that of commercial Pt/C. The above performance can be attributed to the uniform dispersion of PtFe nanoparticles on the support material.…”

Section: Introductionmentioning

confidence: 99%

The potential of novel carbon nanocages as a carbon support for an enhanced methanol electro‐oxidation reaction in a direct methanol fuel cell

et al. 2020

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In this study, we introduce the potential for a new catalyst support, namely, carbon nanocages (CNCs) for anodic direct methanol fuel cell (DMFC). The synthesis, characterization and catalytic activities of four electrocatalysts, PtRu/CNC, PtNi/CNC, PtFe/CNC and PtCo/CNC, have been investigated. These electrocatalysts are synthesized using pyrolysis, followed by a microwave-assisted ethylene glycol reduction method. From X-ray diffraction analysis, PtNi/CNC and PtRu/CNC showed the smallest crystallite particle size of Pt-alloy, which corresponded to the (111) plane. The Raman spectra confirmed the presence of the carbon support material in all prepared electrocatalysts. The ratio value of the D band and G band (I D /I G) of all prepared samples was not much different within the electrocatalyst and CNC. The I D /I G values calculated for the CNC, PtNi/CNC, PtRu/CNC, PtCo/CNC and PtFe/ CNC electrocatalysts were 0.90, 0.89, 0.83, 0.78 and 0.77, respectively. Therefore, the number of defects of graphitization in increasing order (I D /I G) was PtFe/CNC < PtCo/CNC < PtRu/CNC < PtNi/CNC < CNC. Brunauer-Emmett-Teller analysis revealed that the CNC support has a mesoporous-type structure with a high surface area of 416 m 2 g −1 , which indicates that this support has a high potential to act as an excellent catalyst support. From the cyclic voltammetry curve, PtRu/CNC showed the highest catalytic activity in methanol electro-oxidation and reached a value of 427 mA mg −1 , followed by PtNi/ CNC (384.11 mA mg −1), PtCo/CNC (150.53 mA mg −1) and PtFe/CNC (144.11 mA mg −1). PtFe/CNC exhibited a higher ratio value of I f /I b (3.24) compared with PtRu/CNC (2.34), PtNi/CNC (1.43) and PtCo/CNC (1.62). These values show that the combination of Pt and Fe catalysts in PtFe/CNC had better CO tolerance than PtRu/CNC, PtNi/CNC and PtCo/CNC electrocatalysts. The higher performance of PtRu/CNC was attributed to the fact that it had the smallest bimetallic-Pt crystallite; there was a smooth distribution of bimetallic-Pt on its CNC support, as shown by field emission scanning electron microscopy; it had the highest electrochemical surface area value (16.23 m 2 g −1); and

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“…A large number of researchers had studied mainly from the perspective of anodic catalyst to promote the development of DMFC. To select a suitable catalyst for catalytic action, the mechanism of methanol adsorption and CO oxidation on the catalyst was proposed according to the following reaction: [12]

true {normalC normalH}_{3} normalO normalH \to normalC H_{3} normalO H_{normala normald normals}

true normalC H_{3} normalO normalH \to normalC O_{normala normald normals} + 4 {normalH}^{+} + 4 {normale}^{-}

true normalC O_{normala normald normals} + H_{2} normalO \to 2 {normalH}^{+} + 2 {normale}^{-}

…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research Progress on Catalysts for the Electrocatalytic Oxidation of Methanol

Ding

Dong

Tang³

2020

ChemistrySelect

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The methanol oxidation reaction has high energy density and the product is non-toxic and harmless (CO 2 , H 2 O), making it become one of the targets of new fuel energy. To maximize the efficiency of the reaction, its key lies in the development of highly efficient catalysts. In this paper, we reviewed the types of methanol electrocatalytic oxidation catalysts in recent years, some new preparation methods, and the reaction mechanism of different types of catalyst systems, and discussed their structure-activity relationships, laying the foundation for the development of highly efficient new catalysts in the future. And this paper is included on the types of catalysts (Pt-based catalyst, Ni-based catalyst, and other transition metal-based catalyst) and preparation methods (Reduction method, sol-gel method, in-situ method), and discussed the catalytic mechanism which mainly starts from two aspects, one is adsorptiondesorption, the other is the bond between the catalyst, methanol, and the medium. Finally, the future challenges and opportunities of the electrocatalytic oxidation of methanol are discussed.

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Platinum–Iron nanoparticles supported on reduced graphene oxide as an improved catalyst for methanol electro oxidation

Cited by 56 publications

References 44 publications

Research and innovation in the electrocatalyst development toward glycerol oxidation reaction

Research and innovation in the electrocatalyst development toward glycerol oxidation reaction

The potential of novel carbon nanocages as a carbon support for an enhanced methanol electro‐oxidation reaction in a direct methanol fuel cell

Research Progress on Catalysts for the Electrocatalytic Oxidation of Methanol

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