Core–shell Pd–P@Pt–Ni nanoparticles with enhanced activity and durability as anode electrocatalyst for methanol oxidation reaction

Guo, Jianghuai; Zhang, Man; Xu, Jing; Fang, Jun; Luo, Shuiyuan; Yang, Chaolong

doi:10.1039/d1ra07998k

Cited by 6 publications

(1 citation statement)

References 70 publications

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“…They have a higher volumetric energy density, and cost advantages, over cells that use hydrogen as fuel. Thus, DMFCs are promising candidates for an energy source for transportation and electronic devices [1][2][3][4]. However, the efficiency of fuel cells depends on appropriate catalysts in the electrodes [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Cu@PtRu Core–Shell Nanostructured Electrocatalysts Anchored on Reduced Graphene Oxide toward Methanol Oxidation

Gomes,

Noce,

de Matos

et al. 2023

Energies

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This work reports the influence of a reduced graphene oxide (rGO) support on the catalytic performance of Cu@PtRu/rGO electrocatalysts toward methanol oxidation in an acidic medium. These electrocatalysts are synthesized via a two-step reduction method; the first step utilizes ethylene glycol for the reduction of Cu2+ ions, forming Cu/rGO. In the second step, spontaneous redox reactions take place, in a process known as galvanic displacement, where the Pt2+ and Ru3+ species are reduced to form PtRu layers, and the copper is partially oxidized to the solution. Then, the Cu@PtRu/rGO core–shell is produced, comprising Cu in the inner structure (core) and PtRu on the outer part (shell). To compare the catalytic performance of the prepared nanocatalysts (NCs), Pt/C, PtRu/C, and Cu@PtRu/C are also synthesized on Vulcan XC-72R carbon. All catalysts are characterized via X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). Cyclic voltammetry (CV) and chronoamperometry (CA) are employed to measure the electrochemical performance. The core–shell/rGO combination is superior in catalytic activity to the traditional Pt/C, PtRu/C, and Cu@PtRu/C catalysts for the methanol oxidation reaction. These results suggest that Cu@PtRu/rGO exhibits a high bulk activity for methanol electrooxidation, a high stability, and a high tolerance to CO poisoning, meaning it is possible to reduce the platinum loading in proton-exchange membrane fuel cells (PEMFCs).

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Section: Introductionmentioning

confidence: 99%

Cu@PtRu Core–Shell Nanostructured Electrocatalysts Anchored on Reduced Graphene Oxide toward Methanol Oxidation

Gomes,

Noce,

de Matos

et al. 2023

Energies

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Environmental Energy Production and Wastewater Treatment Using Synthesized Pd Nanoparticles with Biological and Photocatalytic Activity

Tiri,

Aygun,

Bekmezci

et al. 2024

Top Catal

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Metallic nanoparticles have attracted great attention in catalytic, medical diagnosis, and treatment research in recent years. The formation of palladium nanoparticles using rosemary (Rosmarinus officinalis L.) extract was carried out using the green synthesis method. The plant was extracted using 70% ethanol by microwave techniques. The novelty of this study is the investigation of the biological activities of green synthesis of Pd nanoparticles, such as DNA cleavage activity, antimicrobial activity, DPPH scavenging activity, and its electro-catalytic performance in alcohol oxidation. Additionally, photocatalytic activities were also evaluated. The characterization of synthesized palladium nanoparticles (Pd NPs) was performed by UV-spectrometry, XRD, FTIR, and TEM. According to TEM results, Pd nanoparticles were observed to have a spherical shape and an average particle size of 4.91 nm. The Pd NPs showed the photodegradation of MB solution by up to 79.9% at 120 min. The newly synthesized plant-mediated green synthesized Pd NPs showed the max and the min antimicrobial activity at 16 µg/mL and 256 µg/mL against L. pneumophila and C. albicans, respectively. The current density ratio of 48.22 mA/cm2 obtained in the study indicates that the obtained materials may be of interest in different applications. According to the results obtained, a direct relationship of extract use is observed in the synthesis of Pd nanoparticles and is a good way to reduce and stabilize metal salts. It has been determined that green Pd NPs have potential for use in energy production from alcohol oxidation and in medical applications.

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Integration of binary Ta2O5 nanoparticles on ternary MnWO4 nanorods as novel electrocatalysts with enhanced activity toward methanol oxidation reaction

Sreekanth

Kumar

Sindhu

et al. 2023

International Journal of Hydrogen Energy

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Core–shell Pd–P@Pt–Ni nanoparticles with enhanced activity and durability as anode electrocatalyst for methanol oxidation reaction

Abstract: The Pd–P@Pt–Ni core–shell nanoparticles consist of an amorphous core and a low-crystalline shell. They exhibit the excellent catalytic properties in MOR owing to the double synergistic effects from the core and the nickel species in the shell.

Cited by 6 publications

References 70 publications

Cu@PtRu Core–Shell Nanostructured Electrocatalysts Anchored on Reduced Graphene Oxide toward Methanol Oxidation

Cu@PtRu Core–Shell Nanostructured Electrocatalysts Anchored on Reduced Graphene Oxide toward Methanol Oxidation

Environmental Energy Production and Wastewater Treatment Using Synthesized Pd Nanoparticles with Biological and Photocatalytic Activity

Integration of binary Ta2O5 nanoparticles on ternary MnWO4 nanorods as novel electrocatalysts with enhanced activity toward methanol oxidation reaction

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