Ethanol electro-oxidation on carbon-supported Pt1Mn3 catalyst investigated by pinhole on-line electrochemical mass spectrometry

Ju, Kyong‐Sik; Pak, Sung–Nam; Ri, Cholnam; Ryo, Hyok–Su; Kim, Kang‐Il; So, Sung-Ryol; Ri, Chun-Kil; Ri, Su-Pom; Nam, Kwang-Won; Pak, Kyong-Song

doi:10.1016/j.cplett.2019.04.061

Cited by 8 publications

(6 citation statements)

References 34 publications

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“…Therefore, the high porosity of the sample ensures access of the reactants to the surface of por-Si/Pd and removal of the reaction products. The mass spectrometry analysis of EEO products on por-Si/Pd shows that the main products are CO 2 , CH 4 , H 2 , CO, O 2 , acetaldehyde (CHO) + [17], methanol, ethanol and water vapor. The volumes of components relative to the total volume of EEO products are the following: Figure 7a,b shows the influence of the sample porosity, etching duration and temperature on the duration of gas evolution.…”

Section: Resultsmentioning

confidence: 99%

“…In this work, intensive gas evolution can be visually detected without using additional devices. The mass spectrometry analysis of EEO products on por-Si/Pd shows that the main products are CO2, CH4, H2, CO, O2, acetaldehyde (CHO) + [17], methanol, ethanol and water vapor. The volumes of components relative to the total volume of EEO products are the following: H2-5%, CH4-7%, H2O-33%, CO-25%, O2-20%, CO2-10%.…”

Section: Resultsmentioning

confidence: 99%

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Investigation of the Pd Nanoparticles-Assisted Chemical Etching of Silicon for Ethanol Solution Electrooxidation

et al. 2019

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The formation of porous silicon by Pd nanoparticles-assisted chemical etching of single-crystal Si with resistivity ρ = 0.01 Ω·cm at 25 • C, 50 • C and 75 • C in HF/H 2 O 2 /H 2 O solution was studied. Porous layers of silicon were studied by optical and scanning electron microscopy, and gravimetric analysis. It is shown that por-Si, formed by Pd nanoparticles-assisted chemical etching, has the property of ethanol electrooxidation. The chromatographic analysis of ethanol electrooxidation products on por-Si/Pd shows that the main products are CO 2 , CH 4 , H 2 , CO, O 2 , acetaldehyde (CHO) + , methanol and water vapor. The mass activity of the por-Si/Pd system was investigated by measuring the short-circuit current in ethanol solutions. The influence of the thickness of porous silicon and wafer on the mass activity and the charge measured during ethanol electrooxidation was established. Additionally, the mechanism of charge transport during ethanol electrooxidation was established.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Investigation of the Pd Nanoparticles-Assisted Chemical Etching of Silicon for Ethanol Solution Electrooxidation

et al. 2019

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“…Four characteristic peaks corresponding to (111), ( 200), ( 220) and (311) planes of the facecentered cubic (fcc) crystalline Pt are observed at 2q = 39.9°, 46.6°, 67.5°and 81.8°in XRD patterns, respectively. 32,35 The typical fcc Pt diffraction peaks in the PtCu-3/C electrocatalyst seem to be broadened and there are no noticeable peaks for phase separated structures such as a pure Cu or its oxides/ hydroxides in XRD pattern, indicating a common degree of alloying between Pt and Cu.…”

Section: Physical Characterizationmentioning

confidence: 99%

“…[25][26][27][28][29] Pt-Mn and Pt-Cu activity towards EOR is not as high as Pt-Sn and Pt-Ru, but they have also enhanced catalytic activity compared to pure Pt catalyst. [30][31][32][33][34][35][36] Ammam et al 33 have formed PtCu/C alloy catalyst and Pt(Cu)/C core-shell type catalyst, and investigated that PtCu/C displayed a better activity with respect to Pt(Cu)/C in terms of oxidation current and onset potential. Magalhães et al 34 have studied that ternary PtSnCu catalyst show a drastic reduction of the onset potential in comparison with PtSn and PtCu beyond Pt.…”

Section: Introductionmentioning

confidence: 99%

Study on ethanol electro-oxidation over a carbon-supported Pt–Cu alloy catalyst by pinhole on-line electrochemical mass spectrometry

Ju¹,

Jang²,

Choe³

et al. 2023

RSC Adv.

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“…This poisoning effect needs to be overcome by modifying the surface so that the oxygen coverage can be increased via the adsorption of OH coming from the dissociation of water. The modification of the surface is often done by adding another element [37,[47][48][49][50][51] that changes the properties or by even adding a third one in some cases [48]. Other methodologies include the control of the catalyst morphology and choosing appropriate support materials [52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Ethanol Electrooxidation at Platinum-Rare Earth (RE = Ce, Sm, Ho, Dy) Binary Alloys

et al. 2020

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Proton exchange membrane fuel cells and direct alcohol fuel cells have been extensively studied over the last three decades or so. They have emerged as potential systems to power portable applications, providing clean energy, and offering good commercial viability. Ethanol is considered one of the most interesting fuels in this field. Herein, platinum-rare earth (Pt-RE) binary alloys (RE = Ce, Sm, Ho, Dy, nominal composition 50 at.% Pt) were produced and studied as anodes for ethanol oxidation reaction (EOR) in alkaline medium. A Pt-Dy alloy with nominal composition 40 at.% Pt was also tested. Their electrocatalytic performance was evaluated by voltammetric and chronoamperometric measurements in 2 M NaOH solution with different ethanol concentrations (0.2–0.8 M) in the 25–45 °C temperature range. Several EOR kinetic parameters were determined for the Pt-RE alloys, namely the charge transfer and diffusion coefficients, and the number of exchanged electrons. Charge transfer coefficients ranging from 0.60 to 0.69 and n values as high as 0.7 were obtained for the Pt0.5Sm0.5 electrode. The EOR reaction order at the Pt-RE alloys was found to vary between 0.4 and 0.9. The Pt-RE electrodes displayed superior performance for EOR than bare Pt, with Pt0.5Sm0.5 exhibiting the highest electrocatalytic activity. The improved electrocatalytic activity in all of the evaluated Pt-RE binary alloys suggests a strategy for the solution of the existing anode issues due to the structure-sensitive EOR.

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Ethanol electro-oxidation on carbon-supported Pt1Mn3 catalyst investigated by pinhole on-line electrochemical mass spectrometry

Cited by 8 publications

References 34 publications

Investigation of the Pd Nanoparticles-Assisted Chemical Etching of Silicon for Ethanol Solution Electrooxidation

Investigation of the Pd Nanoparticles-Assisted Chemical Etching of Silicon for Ethanol Solution Electrooxidation

Study on ethanol electro-oxidation over a carbon-supported Pt–Cu alloy catalyst by pinhole on-line electrochemical mass spectrometry

Ethanol Electrooxidation at Platinum-Rare Earth (RE = Ce, Sm, Ho, Dy) Binary Alloys

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