Effect of Sn Loading on the Characteristics of Pt Electrocatalysts Supported on Reduced Graphene Oxide for Application as Direct Ethanol Fuel Cell Anode

Cordeiro, Guilherme L.; Ussui, Valter; Messias, Nildemar A.; Piasentin, R. M.; Lima, Nelson Batista de; Neto, Almir O.; Lazar, Dolores Ribeiro Ricci

doi:10.20964/2017.05.68

Cited by 4 publications

(4 citation statements)

References 42 publications

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“…On the other hand, GO with a lower concentration of functional groups shows a broad diffraction hump ranging from 15 • to 30 • , centered at 24.5 • , indicating a smaller interlayer distance between graphene sheets [20]. By applying Bragg's law, we determined that the interplanar spacing is 0.96 nm at 2θ = 9.1 • , a value similar to that reported in the literature [40]. For GO with a lower concentration of functional groups, the XRD pattern centered at 24.5 • has an interplanar spacing of 0.36 nm.…”

Section: Resultssupporting

confidence: 85%

Higher Electrical Conductivity of Functionalized Graphene Oxide Doped with Silver and Copper (II) Ions

Pereira,

Gonzaléz,

Queiroz

et al. 2023

Energies

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This study presents a new methodology for graphene oxide (GO) synthesis through electrochemical exfoliation of graphite, followed by phthalic anhydride functionalization (PhA-GO) and doping with Cu2+ and Ag+ ions. The synthesis of GO involved the use of an electrochemical cell with H2SO4 as the electrolyte, with a gradual increase in potential from 2.3 V to 10 V. Extensive characterization techniques confirmed the successful incorporation of oxygen-containing functional groups, verifying the oxidation of graphite. PhA-GO functionalization was confirmed by thermogravimetric analysis, Differential Scanning Calorimetry, Fourier-transform infrared spectroscopy (FTIR), UV-Vis spectroscopy, X-ray diffraction, scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDX), which confirmed the presence of Cu2+ and Ag+ ions. The Scherrer equation determined a grain size of 75.85 nm for GO. The electrical properties exhibited semiconductor and semimetal behavior, particularly in PhA-GO/Ag+ composites, making them suitable for electronic devices over a wide temperature range, presenting a promising pathway for advanced materials in electronic applications.

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Section: Resultssupporting

confidence: 85%

Higher Electrical Conductivity of Functionalized Graphene Oxide Doped with Silver and Copper (II) Ions

Pereira,

Gonzaléz,

Queiroz

et al. 2023

Energies

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“…Various catalytic methods are extensively being used to produce biofuel from biomass and inclusion of nanocatalysts can improve the product quality and its durability. It's the large surface area and rich catalytic action of nanoparticles that can help in dealing with the hurdles like inefficiency, fast deactivation-rate, time-consumption and mass-transfer resistance of heterogeneous catalysis [51,52]. In sequence of improving the effectiveness of fuel-cells, there is a need of a catalyst and Pt being a noble metal possesses good quality of catalyticefficiency.…”

Section: Role Of Nanotechnology In Biomass To Biofuel Conversion-nanomentioning

confidence: 99%

Biomass based bio-electro fuel cells based on carbon electrodes: an alternative source of renewable energy

Pandey

2019

SN Appl. Sci.

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The increasing concerns for sustainable economy and alarming environmental health are making researchers to pay serious attention to bio-fuels that too primarily synthesized from the biomass. An energy transforming machine extracting energy directly from biomass would be an idyllic condition. Regrettably, devices using sustainable energy resource have shown to have low output, not meeting the demands of practical appliances. Serious efforts are being dedicated to research on the prospects of bio-fuel powered fuel cells as green energy exchange tool. To comprehend this, scientists are working on the production and expansion biological fuel cell (BFC) which are electro-chemical devices utilizing electro-active bacteria for producing electricity through oxidation. The materials used for electrodes in BFCs, should have conductivity, porosity, biocompatibility, low in cost and recyclability. The materials tested for BFCs are principally metalbased, carbon-based or purposely built advanced materials. The research efforts over the last decade have positioned macro-porous and composite of carbon-based nanostructures with controllable surface and electronic characteristics to be used as a support-matrix for metallic electro catalysts or as proficient non-metallic electro catalysts in BFCs. This review article discusses about the present challenges and future prospects in the field of current progresses in the field of carbon based catalysis system for biomass based microbial fuel cells which extract energy from biomass resources either directly or indirectly.

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“…The second and recently explored type of research is the use of CBNs as supporting matrix which can act much less the same as the alloyed systems in terms of detoxification; or be combined with alloyed catalyst to further increase the electrocatalytic activities toward complete ethanol oxidation [ 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 ]. Goel and Basu reported a comparative study of CBNs-supported Pt–Ru and revealed that the maximum power density to be in the order Pt–Ru/MCN (mesoporous carbon nitride) > Pt–Ru/t-MWCNTs > Pt–Ru/MWCNTs > Pt–Ru/Vulcan-XC [ 84 ].…”

Section: Indirect Energy Conversion Challenges and Applications Ofmentioning

confidence: 99%

“…Instead of CNTs, graphene oxide was exploited and successfully applied as matrix to attach noble metals such as Pt and Pd [ 85 ]. Kumar et al reported a simple procedure to synthesize large-scale perforated graphene oxide nanosheets-Pd hybrids (Pd–FP–rGONSs) using microwave irradiation.…”

Section: Indirect Energy Conversion Challenges and Applications Ofmentioning

confidence: 99%

Carbon-Based Nanomaterials in Biomass-Based Fuel-Fed Fuel Cells

Hoa

Vestergaard

Tamiya

2017

Sensors

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Environmental and sustainable economical concerns are generating a growing interest in biofuels predominantly produced from biomass. It would be ideal if an energy conversion device could directly extract energy from a sustainable energy resource such as biomass. Unfortunately, up to now, such a direct conversion device produces insufficient power to meet the demand of practical applications. To realize the future of biofuel-fed fuel cells as a green energy conversion device, efforts have been devoted to the development of carbon-based nanomaterials with tunable electronic and surface characteristics to act as efficient metal-free electrocatalysts and/or as supporting matrix for metal-based electrocatalysts. We present here a mini review on the recent advances in carbon-based catalysts for each type of biofuel-fed/biofuel cells that directly/indirectly extract energy from biomass resources, and discuss the challenges and perspectives in this developing field.

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Effect of Sn Loading on the Characteristics of Pt Electrocatalysts Supported on Reduced Graphene Oxide for Application as Direct Ethanol Fuel Cell Anode

Cited by 4 publications

References 42 publications

Higher Electrical Conductivity of Functionalized Graphene Oxide Doped with Silver and Copper (II) Ions

Higher Electrical Conductivity of Functionalized Graphene Oxide Doped with Silver and Copper (II) Ions

Biomass based bio-electro fuel cells based on carbon electrodes: an alternative source of renewable energy

Carbon-Based Nanomaterials in Biomass-Based Fuel-Fed Fuel Cells

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