Ni Pt sinter as a promising electrode for methanol electrocatalytic oxidation

Urbańczyk, Ewelina; Jaroń, A.; Simka, Wojciech

doi:10.1016/j.ijhydene.2018.07.109

Cited by 23 publications

(12 citation statements)

References 50 publications

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“…Figure 6 confirmed once more the superiority of the Au/Pt/GC catalyst ( Figure 6, b) where it exhibited after 100 CV cycles a higher (4.6 times) I p d than that of the Pt/GC catalyst (Figure 6, a). Pt-based catalysts, the direct MO in alkaline solutions produces CO 2 according to the following equation [18,19]:…”

Section: Resultsmentioning

confidence: 99%

“…0.2 V in the forward scan of Figure 7, a, on the Pt/GC. During this process, the formation of poisonous intermediates such as CO is possible which mitigates the catalytic performance of MO (equation 9) [19].…”

Section: Resultsmentioning

confidence: 99%

“…Methane is another intermediate which can be produced during MO according to the following reaction [19,20]:…”

Section: Resultsmentioning

confidence: 99%

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Facile Synthesis of a Tailored-Designed Au/Pt Nanoanode for Enhanced Formic Acid, Methanol, and Ethylene Glycol Electrooxidation

Al-Akraa

Asal

Mohammad

2019

Journal of Nanomaterials

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The recent revolution in nanoscience and global energy demand have motivated research in liquid fuel cells (LFCs) due to their enhanced efficiency, moving flexibility, and reduced contamination. In line with this advancement, a glassy carbon (GC) electrode was modified with platinum (PtNPs) and gold (AuNPs) nanoparticles to fabricate a nanosized anode for formic acid, methanol, and ethylene glycol electrooxidation (abbreviated, respectively, to FAO, MO, and EGO), of the key anodic reactions of LFCs. The deposition sequence of the catalyst’s layers was important where the Au/Pt/GC electrode (in which PtNPs were directly deposited onto the GC surface followed by AuNPs—surface coverage ≈ 32%) exhibited the best catalytic performance. The catalytic performance of the Au/Pt/GC anode excelled (at least threefold) its value obtained at the Pt/GC anode with regard to FAO and EGO, if the oxidation peak currents were compared. This enhancement got reduced to 1.4 times in the case of MO, but the large decrease (− 220 mV) in the onset potential of MO provided compensation. The role of AuNPs in the Au/Pt/GC catalyst was principal in boosting its catalytic performance as it immunized the underlying PtNPs against CO poisoning which is associated with the release of CO as an intermediate during the oxidation. Interestingly, AuNPs succeeded in interrupting the contiguity of the Pt surface sites required for CO adsorption during FAO, MO, and EGO and, thus, presage preventing the deterioration of the catalytic performance of their corresponding LFCs.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Facile Synthesis of a Tailored-Designed Au/Pt Nanoanode for Enhanced Formic Acid, Methanol, and Ethylene Glycol Electrooxidation

Al-Akraa

Asal

Mohammad

2019

Journal of Nanomaterials

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“…At the same time, it had better catalytic activity. Urbanczyk et al [54] . used sintered Ni−Pt electrode as the anode of MOR, and they found that Ni−Pt electrode had high activity, also the intermediate substances’ bad was reduced in the methanol oxidation process.…”

Section: Classification Of Catalystsmentioning

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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“…It is widely known that CO is strongly adsorbed on Pt and the adsorbed CO inhibits the subsequent reaction, which is called CO poisoning. [48][49][50][51][52][53] Therefore, we can say that the reaction proceeds easily on the Pt oxide because the CO 2 electroreduction reaction did not proceed through CO. This is suggested from the difference in activation energies.…”

Section: In-situ Seiras Analysis Of Co 2 Electroreduction On Pt Andmentioning

confidence: 99%

In-situ Analysis of CO<sub>2</sub> Electroreduction on Pt and Pt Oxide Cathodes

et al. 2020

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The issue of excessive amounts of CO 2 in the atmosphere has promoted the study of methods of removing it from the atmosphere. In the field of electrochemistry, electroreduction of CO 2 has become an area of significant scientific interest. Our previous work has shown Pt oxide exhibits a higher CO 2 electroreduction activity than Pt. In this study, the surface adsorption species on Pt and Pt oxide during electroreduction were investigated with SEIRAS to clarify the mechanisms of the superior electroreduction activity of Pt oxide. The main adsorption species during CO 2 electroreduction were methanol and HCOO − on the Pt oxide, and methanol and linear-CO on the Pt. We confirmed that the CO 2 electroreduction reaction proceeds via HCOO − on Pt oxide, and through CO on Pt. The CO 2 electroreduction activity is significantly affected by the adsorption species because CO strongly adsorbs on the active site and inhibits subsequent reactions. The residual oxygen in the reduced Pt oxide electrode may cause the difference in adsorption species, controlling the reaction pathway. We conclude that the superior CO 2 electroreduction activity of Pt oxide is due to the difference in the reaction pathway, possibly caused by residual oxygen and oxygen vacancies in the Pt oxide electrode.

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Ni Pt sinter as a promising electrode for methanol electrocatalytic oxidation

Cited by 23 publications

References 50 publications

Facile Synthesis of a Tailored-Designed Au/Pt Nanoanode for Enhanced Formic Acid, Methanol, and Ethylene Glycol Electrooxidation

Facile Synthesis of a Tailored-Designed Au/Pt Nanoanode for Enhanced Formic Acid, Methanol, and Ethylene Glycol Electrooxidation

Research Progress on Catalysts for the Electrocatalytic Oxidation of Methanol

In-situ Analysis of CO<sub>2</sub> Electroreduction on Pt and Pt Oxide Cathodes

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