Pt based nanocomposites (mono/bi/tri-metallic) decorated using different carbon supports for methanol electro-oxidation in acidic and basic media

Singh, Balwinder; Murad, Lukaa; Laffir, Fathima; Dickinson, Calum; Dempsey, Eithne

doi:10.1039/c1nr10273g

Cited by 94 publications

(60 citation statements)

References 60 publications

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“…The current vs. potential curves for both Pt/C and Pt/ZSM‐5/C confirm presence of platinum on the electrodes which is evident from the downward lumps in the potential range of 0.5–0.6 V in both the cases which is due to reduction of oxidized PNPs deposited. The peak on the left is for hydrogen adsorption and desorption . Though platinum was electrodeposited on both the electrodes but the electrochemically active surface area was maximum in case of Pt/ZSM‐5/C that justifies the smaller PNPs deposited, facilitating more surface area exposure.…”

Section: Resultsmentioning

confidence: 90%

Electro‐oxidation of Methanol and Ethanol Catalyzed by Pt/ZSM‐5/C

Daas¹,

Ghosh

2017

Electroanalysis

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Direct alcohol fuel cells are a promising source of future energy generation for small and portable devices. Platinum is considered the best catalyst for electro‐oxidation of alcohols in fuel cells but the major hurdles with platinum catalysts are high cost of platinum as well as low selectivity, slow reaction kinetics and carbonaceous poisoning associated with platinum. This particular research reports electro‐oxidation of methanol and ethanol over platinum electrodeposited on ZSM‐5 without any carbon additive. From the cyclic voltammetry and chronoamperometry, linear sweep voltammetry, tafel plot and multiple scan analyses, it is found that Pt/ZSM‐5/C electrodes can catalyze electro‐oxidation of methanol and ethanol with higher efficiency. ZSM‐5 supports the formation of smaller sized platinum nanoparticles in a dispersed manner on the zeolite support and thus increases the active surface area of the metal for catalytic activity. It favors adsorption of alcohol molecules on the modified electrode surface and thus increases the diffusion process. It also stabilizes the modified electrodes.

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Section: Resultsmentioning

confidence: 90%

Electro‐oxidation of Methanol and Ethanol Catalyzed by Pt/ZSM‐5/C

Daas¹,

Ghosh

2017

Electroanalysis

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“…From these advantages, Pt-impregnated AC has been widely applied for energy storage. For example, in hydrogen storage application, even with much lower surface area and pore size, tiny Pt nanoparticles were uniformly distributed within the pores, effectively assisting in hydrogen diffusion into the deeper sites of AC via the spillover phenomenon [92,93]. There were reports of AC/ Pt composite as being very active and selective for degradation of low molecular weight carboxylic acid [94].…”

Section: Activated Carbon/platinum (Pt) Hybridmentioning

confidence: 99%

Effect of hybridization on the value-added activated carbon materials

Julkapli

2016

Int J Ind Chem

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This paper provides a concise review of recent advances in activated carbon (AC) and its corresponding modified material. Topics covered in this work include the synthesis and characterization of AC as the feedstock materials, as well as the properties and applications of the subsequent hybrid material for different industries. Numerous research studies have since reported remarkable physical, chemical, thermal, conductivity, porosity, and mechanical (stiffness and strength) properties of AC in different types of multiple material matrices, including polymers, metals, and ceramics. The incorporation of AC particles into material matrices may result in the formation of an entire new class of advanced materials, due to the resulting strong interfacial bonds of the hybrid components. Although this requirement is no different from those that offer conventional hybrid materials, the scale of the reinforcement and filled phase of the AC has changed from micrometers to nanometers. This create opportunities to increase the potential applications of AC hybrid materials of the development of fundamentally unique new materials for in chemical conversion, environmental, and fuel storage applications.

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“…Among the various contestants, fuel cell is good technological option for resolving energy and pollution problems, it offers many advantages such as simple design, low environmental pollution, high energy conversion efficiency, and convenient fuel transportation, storage and supply [1][2][3][4][5]. Among the various types of fuel cells, considerable attention have been attracted by direct methanol fuel cells (DMFCs) due to easier supply of methanol to the community using existing infrastructure, and methanol can be produced from biomass so it can be considered a renewable energy source [6,7].…”

Section: Introductionmentioning

confidence: 99%