A new metal electrocatalysts supported matrix: Palladium nanoparticles supported silicon carbide nanoparticles and its application for alcohol electrooxidation

Dai, Hong; Chen, Yanling; Lin, Yanyu; Xu, Guifang; Yang, Caiping; Tong, Yuping; Guo, Longhua; Chen, Guonan

doi:10.1016/j.electacta.2012.08.109

Cited by 17 publications

(5 citation statements)

References 42 publications

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“…Dai and Chen came to similar conclusions on an independent research paper where highly and uniformly dispersed Pd NPs supported on silicon carbide were straightforwardly synthesized and applied with success to the electro-oxidation of alcohols with different lengths of carbon chains . Their study confirmed the excellent performance of these composites in the process by presenting nanocomposite films featuring very good stability, notable electroreduction peak currents, low anodic oxidation potential, and convenient operational conditions.…”

Section: Catalytic Applicationsmentioning

confidence: 95%

Porous Silicon Carbide (SiC): A Chance for Improving Catalysts or Just Another Active-Phase Carrier?

et al. 2021

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There is an obvious gap between efforts dedicated to the control of chemicophysical and morphological properties of catalyst active phases and the attention paid to the search of new materials to be employed as functional carriers in the upgrading of heterogeneous catalysts. Economic constraints and common habits in preparing heterogeneous catalysts have narrowed the selection of active-phase carriers to a handful of materials: oxide-based ceramics (e.g. Al2O3, SiO2, TiO2, and aluminosilicates–zeolites) and carbon. However, these carriers occasionally face chemicophysical constraints that limit their application in catalysis. For instance, oxides are easily corroded by acids or bases, and carbon is not resistant to oxidation. Therefore, these carriers cannot be recycled. Moreover, the poor thermal conductivity of metal oxide carriers often translates into permanent alterations of the catalyst active sites (i.e. metal active-phase sintering) that compromise the catalyst performance and its lifetime on run. Therefore, the development of new carriers for the design and synthesis of advanced functional catalytic materials and processes is an urgent priority for the heterogeneous catalysis of the future. Silicon carbide (SiC) is a non-oxide semiconductor with unique chemicophysical properties that make it highly attractive in several branches of catalysis. Accordingly, the past decade has witnessed a large increase of reports dedicated to the design of SiC-based catalysts, also in light of a steadily growing portfolio of porous SiC materials covering a wide range of well-controlled pore structure and surface properties. This review article provides a comprehensive overview on the synthesis and use of macro/mesoporous SiC materials in catalysis, stressing their unique features for the design of efficient, cost-effective, and easy to scale-up heterogeneous catalysts, outlining their success where other and more classical oxide-based supports failed. All applications of SiC in catalysis will be reviewed from the perspective of a given chemical reaction, highlighting all improvements rising from the use of SiC in terms of activity, selectivity, and process sustainability. We feel that the experienced viewpoint of SiC-based catalyst producers and end users (these authors) and their critical presentation of a comprehensive overview on the applications of SiC in catalysis will help the readership to create its own opinion on the central role of SiC for the future of heterogeneous catalysis.

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Section: Catalytic Applicationsmentioning

confidence: 95%

Porous Silicon Carbide (SiC): A Chance for Improving Catalysts or Just Another Active-Phase Carrier?

et al. 2021

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“…However, also if the corrosion resistance of carbon is improved, being not in contact with Pt and oxygen, it is not stable at high potentials, thus the use of SiC alone as catalyst support was evaluated by out-of-cell measurements. [146][147][148][149][150][151] The ECSA of Pt/ SiC was higher than that of Pt/C, as well as the stability. After ADTs, the ECSA loss of Pt/SiC was lower than that of Pt/C.…”

Section: Silicon Carbide Carbon-silicon Carbide and Silicon Titanium ...mentioning

confidence: 99%

“…The peak current density of Pt/SiC/EG toward methanol oxidation was nearly twice than Pt/C. However, also if the corrosion resistance of carbon is improved, being not in contact with Pt and oxygen, it is not stable at high potentials, thus the use of SiC alone as catalyst support was evaluated by out‐of‐cell measurements [146–151] . The ECSA of Pt/SiC was higher than that of Pt/C, as well as the stability.…”

Section: Sio2 and Sic Alone And In Carbon/metal Oxide/polymer Composi...mentioning

confidence: 99%

The use of silicon in the membrane electrode assembly of fuel cells

Antolini

2024

ChemCatChem

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Silicon, silicon‐based and Si‐containing materials are widely used and play different roles in fuel cells. These materials have been used overall in polymer electrolyte membrane fuel cells, but also in solid oxide fuel cells and phosphoric acid fuel cells. The most used Si compounds in fuel cells are SiO2 and SiC. In this work an overview of the use of Si‐based and Si‐containing materials in the membrane electrode assembly of fuel cells is presented.

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“…In this regard, nanoscale metals/SiC combinations have potential to reach a high level of efficiency, overcoming the major technical problem related to the low operating temperature of standard metals/Si devices . In particular, nanoscale-thick Pd and Au films or Pd and Au nanostructures fabricated on a SiC surface showed peculiar and interesting properties that are useful, for example, in gas sensing [7,31], biosensing [21,22], and catalysts [32]. Besides pure metals, bimetallic nanoscale metals have shown to have improved characteristics with respect to the characteristics of their individual components [25,33].…”

Section: Introductionmentioning

confidence: 99%

Morphology Evolution of Nanoscale-Thick Au/Pd Bimetallic Films on Silicon Carbide Substrate

et al. 2020

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Bimetallic Au/Pd nanoscale-thick films were sputter-deposited at room temperature on a silicon carbide (SiC) surface, and the surface-morphology evolution of the films versus thickness was studied with scanning electron microscopy. This study allowed to elucidate the Au/Pd growth mechanism by identifying characteristic growth regimes, and to quantify the characteristic parameters of the growth process. In particular, we observed that the Au/Pd film initially grew as three-dimensional clusters; then, increasing Au/Pd film thickness, film morphology evolved from isolated clusters to partially coalesced wormlike structures, followed by percolation morphology, and, finally, into a continuous rough film. The application of the interrupted coalescence model allowed us to evaluate a critical mean cluster diameter for partial coalescence, and the application of Vincent’s model allowed us to quantify the critical Au/Pd coverage for percolation transition.

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A new metal electrocatalysts supported matrix: Palladium nanoparticles supported silicon carbide nanoparticles and its application for alcohol electrooxidation

Cited by 17 publications

References 42 publications

Porous Silicon Carbide (SiC): A Chance for Improving Catalysts or Just Another Active-Phase Carrier?

Porous Silicon Carbide (SiC): A Chance for Improving Catalysts or Just Another Active-Phase Carrier?

The use of silicon in the membrane electrode assembly of fuel cells

Morphology Evolution of Nanoscale-Thick Au/Pd Bimetallic Films on Silicon Carbide Substrate

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