Effect of AuM (M: Ag, Pt &amp; Pd) bimetallic nanoparticles on the sorbitol electro-oxidation in alkaline medium

Torres-Pacheco, Luis J.; Osornio-Villa, Azucena; García-Gómez, Nora A.; Olivas, A.; Valdez, R.; Guerra‒Balcázar, Minerva; Álvarez‐Contreras, Lorena; Arjona, Noé

doi:10.1016/j.fuel.2020.117864

Cited by 21 publications

(21 citation statements)

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“…Additionally, the obtained current densities were lower to those resulted for glycerol oxidation, and it can be attributed to the difficulty to oxidize sorbitol (a more complex fuel, 6 C−C bonds) than glycerol (3 C−C bonds). However, we found that the use of manganese oxides allows to obtain high activity at higher sorbitol concentrations (>0.5 M), which is important since in our previous reports the use of noble metal bimetallic electrocatalysts fail in this important issue [32,34] …”

Section: Resultsmentioning

confidence: 80%

Manganese Oxides (Mn₃O₄ & α‐MnO₂) as Co‐catalysts in Pd‐Based Nanomaterials for the Ethylene Glycol Electro‐Oxidation.

et al. 2022

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Incorporation of α‐MnO2 and Mn3O4 during the synthesis of Pd nanoparticles promoted better particle anchoring. Especially the Mn single spinel (Mn3O4) decreased the Pd particle size from ∼10 nm (obtained for Pd/C and Pd/α‐MnO2) to 4.4 nm. HR‐TEM and XPS analysis confirmed electronic changes from a better interaction between Pd and Mn3O4, decreasing the energy barriers for alcohol oxidation, obtaining the lowest apparent activation energy (15.54 kJ mol−1) and resistance to charge transfer (1.44 Ω cm2). The Pd/Mn3O4/C electrocatalyst displayed a current density of 334.74 mA cm−2 at 2 M EG+2 M KOH with an onset potential of −0.32 V vs. NHE. This current density was 2.2 and 3.6‐fold higher than that obtained using Pd/C and Pd/α‐MnO2/C. Further tests using sorbitol and glycerol as fuels revealed that maximum current densities of 255.2 and 472.9 mA cm−2 can be achieved.

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Section: Resultsmentioning

confidence: 80%

Manganese Oxides (Mn₃O₄ & α‐MnO₂) as Co‐catalysts in Pd‐Based Nanomaterials for the Ethylene Glycol Electro‐Oxidation.

et al. 2022

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“…From Figure 6A,B The comparison of NiCo 2 O 4 -rGO/Pt with other recently reported works and Pt/C for SOR in terms of current density and peak potential is presented in Figure 7. Catalysts of Pd/C, 29 Au@FS-rGO, 7 Pt/Ru Nanoparticles, 26 Pt/C, 27,53 Au-Pd/C, 28 Pt 10 Au 90 /C 27 were compared. Although the performance of NiCo 2 O 4 -rGO/ Pt is lower than Pt/C in 0.5 M sorbitol, 27 it is comparable with other works.…”

Section: Electrochemical Evaluation Of Sormentioning

confidence: 99%

“…For example, Dasdelen et al investigated a composite containing fumed silica, reduced graphene oxide, and gold nanoparticles (Au@FS-rGO) as anode catalysts for sorbitol electrooxidation. 7,[26][27][28] In other work, Oyarce et al investigated the commercial PtRu/C catalyst as anode for direct sorbitol fuel cell and direct glucose fuel cell. 7,[26][27][28] Pacheco et al prepared sub <10 nm PtAu and bimetallic nanoparticles including Au, Pd, and Ag supported on Vulcan carbon.…”

Section: Introductionmentioning

confidence: 99%

“…7,[26][27][28] In other work, Oyarce et al investigated the commercial PtRu/C catalyst as anode for direct sorbitol fuel cell and direct glucose fuel cell. 7,[26][27][28] Pacheco et al prepared sub <10 nm PtAu and bimetallic nanoparticles including Au, Pd, and Ag supported on Vulcan carbon. 7,[26][27][28] Also, sorbitol oxidation was tested on Pt and/or Au electrodes and it presented poor activity in comparison with its activity for oxidizing other alcohols.…”

Section: Introductionmentioning

confidence: 99%

“…7,[26][27][28] Pacheco et al prepared sub <10 nm PtAu and bimetallic nanoparticles including Au, Pd, and Ag supported on Vulcan carbon. 7,[26][27][28] Also, sorbitol oxidation was tested on Pt and/or Au electrodes and it presented poor activity in comparison with its activity for oxidizing other alcohols. 29 Besides, previous studies have confirmed that Pt has slightly poor stability in alkaline solution.…”

Section: Introductionmentioning

confidence: 99%

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NiCo ₂ O ₄ ‐rGO /Pt as a robust nanocatalyst for sorbitol electrooxidation

Askari

Salarizadeh

Bartolomeo

2021

Intl J of Energy Research

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A ternary nanocatalyst consisting of nickel cobalt oxide (NiCo 2 O 4 ), reduced graphene oxide (rGO), and platinum (Pt) was introduced as a promising catalyst for application in the sorbitol oxidation reaction (SOR) process for use in fuel cells. Other catalysts such as NiCo 2 O 4 , NiCo 2 O 4 -rGO, and NiCo 2 O 4 /Pt were prepared for comparison. The structure and morphology of the synthesized nanocatalysts were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The efficiency of the as-synthesized materials was assessed by electrochemical tests of cyclic voltammetry (CV), linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA). The comparison of the SOR process for the synthesized nanocatalysts showed that NiCo 2 O 4 -rGO/Pt has the highest current density (57.2 mA cm À2 , 45.04 mA/mg) at a scan rate of 10 mV/s and the lowest peak potential (0.64 V) as well as the highest cyclic stability than other materials. The superior electrocatalytic performance is attributed to the synergistic effect of the components. Moreover, the charge transfer resistance of SOR for NiCo 2 O 4 -rGO/Pt catalyst is 702 Ω, lower than that for NiCo 2 O 4 /Pt (930 Ω). Thus, NiCo 2 O 4 -rGO/Pt constitutes an efficient and promising nanocatalyst for SOR.

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The support influence of Au‐based catalysts in glycerin selective oxidation to glyceric acid

Shen

Chen

et al. 2022

J of Chemical Tech & Biotech

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Background The sustainable conversion of biomass‐derived glycerin into high‐value‐added chemicals is a significant challenge in contemporary science. In this context, the selective oxidation of aqueous glycerin into glyceric acid was investigated in the presence of NaOH and atmospheric oxygen. It was demonstrated that the selective transformation of glycerin to glyceric acid involves a new chemical reaction path for commodity glyceric acid that is both abundant and economical. Results The hydrotalcite‐supported Au nanoparticle catalyst (5%Au/HT) was found to be the most active for glycerin selective transformation to glyceric acid, showing 89.5% glycerin conversion with 61.2% glyceric acid selectivity under optimum experimental conditions. Furthermore, the 5%Au/HT catalyst was reused six times and maintained nearly the same activity in the catalytic recycle experiments. Conclusion In the Au‐based catalysts, there are strong electronic interactions between the different supports and Au nanoparticles (Au NPs). Besides, the basic sites of the catalysts participated in promotion of hydroxyl functional groups. © 2022 Society of Chemical Industry (SCI).

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Effect of AuM (M: Ag, Pt & Pd) bimetallic nanoparticles on the sorbitol electro-oxidation in alkaline medium

Cited by 21 publications

References 55 publications

Manganese Oxides (Mn₃O₄ & α‐MnO₂) as Co‐catalysts in Pd‐Based Nanomaterials for the Ethylene Glycol Electro‐Oxidation.

Manganese Oxides (Mn₃O₄ & α‐MnO₂) as Co‐catalysts in Pd‐Based Nanomaterials for the Ethylene Glycol Electro‐Oxidation.

NiCo ₂ O ₄ ‐rGO /Pt as a robust nanocatalyst for sorbitol electrooxidation

The support influence of Au‐based catalysts in glycerin selective oxidation to glyceric acid

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Effect of AuM (M: Ag, Pt & Pd) bimetallic nanoparticles on the sorbitol electro-oxidation in alkaline medium

Cited by 21 publications

References 55 publications

Manganese Oxides (Mn3O4 & α‐MnO2) as Co‐catalysts in Pd‐Based Nanomaterials for the Ethylene Glycol Electro‐Oxidation.

Manganese Oxides (Mn3O4 & α‐MnO2) as Co‐catalysts in Pd‐Based Nanomaterials for the Ethylene Glycol Electro‐Oxidation.

NiCo 2 O 4 ‐rGO /Pt as a robust nanocatalyst for sorbitol electrooxidation

The support influence of Au‐based catalysts in glycerin selective oxidation to glyceric acid

Contact Info

Product

Resources

About

Manganese Oxides (Mn₃O₄ & α‐MnO₂) as Co‐catalysts in Pd‐Based Nanomaterials for the Ethylene Glycol Electro‐Oxidation.

Manganese Oxides (Mn₃O₄ & α‐MnO₂) as Co‐catalysts in Pd‐Based Nanomaterials for the Ethylene Glycol Electro‐Oxidation.

NiCo ₂ O ₄ ‐rGO /Pt as a robust nanocatalyst for sorbitol electrooxidation