Design and assembly of ternary Pt/Re/SnO2 NPs by controlling the zeta potential of individual Pt, Re, and SnO2 NPs

Drzymała, Elżbieta; Gruzeł, Grzegorz; Pajor-Świerzy, Anna; Depciuch, Joanna; Socha, Robert P.; Kowal, Andrzej; Warszyński, Piotr; Parlinska-Wojtan, Magdalena

doi:10.1007/s11051-018-4244-0

Cited by 24 publications

(20 citation statements)

References 36 publications

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“…Carbon-supported Pt/C, Pt/Re/C, Pt/SnO2/C, and Pt/Re/SnO2/C, with 20 wt.% overall metal loading were prepared using a modified polyol method. In the first step monometallic Pt, Re and SnO2 nanoparticles were prepared using the same procedure as in Drzymała et al [33]. In brief, the calculated amount of H2PtCl6 (Sigma Aldrich) was dissolved in ethylene glycol.…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…The reaction was carried out under argon atmosphere. The Re NPs were synthesized according to the procedure described in previous works [33,35]. These nanoparticles were added separately to the mixture of Pt and SnO2 NPs.…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…These nanoparticles were added separately to the mixture of Pt and SnO2 NPs. Adjusting the zeta potential values to opposite signs for the NPs allowed to successfully assembly the three component combination by mixing the solutions containing the NPs synthesized according to our previous work [33].…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…Tin oxide, platinum and rhenium nanoparticles as well their combinations were synthesized and characterized in details in previous work [33,35]. Briefly, in all cases crystalline, small (bellow 10 nm) spherical nanoparticles were obtained.…”

Section: Tem Analysismentioning

confidence: 99%

“…In the present study Re nanoparticles were synthesized separately and combined with platinum and tin oxide NPs. In a previous study [33] it has been shown that by adjusting the zeta potential of the respective nanoparticles it was possible to obtain in a controlled way SnO2 nanoparticles decorated with platinum or rhenium nanoparticles or both of them. The idea of close contact between the respective NPs, proposed by Higuchi et al will be thus verified by replacing Rh with Re.…”

Section: Introductionmentioning

confidence: 99%

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Ternary Pt/Re/SnO2/C catalyst for EOR: Electrocatalytic activity and durability enhancement

et al. 2020

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Carbon-supported Pt/C, Pt/Re/C, Pt/SnO 2 /C and Pt/Re/SnO 2 /C, with 20 wt.% overall metal loading were prepared and their electrochemical activity towards ethanol oxidation reaction (EOR) was investigated. Transmission electron microscopy (TEM) combined with energy dispersive X-ray spectroscopy (EDS) revealed, that indeed binary and ternary combinations of the designed nanoparticles (NPs) were formed and successfully uniformly deposited on a carbon support. Fourier transform infrared spectroscopy (FTIR) allowed to assess the chemical composition of the nanocatalysts and X-ray diffraction (XRD) allowed to determine the catalyst structure. Potentiodynamic and chronoamperometric measurements were used to establish its catalytic activity and stability. The influence of Re addition on the electrochemical activity towards ethanol oxidation reaction (EOR) was verified. Indeed, the addition of Re to the binary Pt/SnO 2 /C catalyst leads to the formation of ternary Pt/Re/SnO 2 /C with physical contact between the individual NPs, enhancing the EOR. Furthermore, the onset potential of the synthesized ternary catalyst is shifted to more negative potentials and the current densities and specific activity are nearly 11 and 5 times higher, respectively, than for commercial Pt catalyst. Additionally ternary Pt/Re/SnO 2 /C catalyst retained 96% of its electrochemical surface area.

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Section: Synthesis Methodsmentioning

confidence: 99%

Section: Synthesis Methodsmentioning

confidence: 99%

Section: Synthesis Methodsmentioning

confidence: 99%

Section: Tem Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ternary Pt/Re/SnO2/C catalyst for EOR: Electrocatalytic activity and durability enhancement

et al. 2020

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Selective Ethanol Oxidation Reaction at the Rh–SnO₂ Interface

et al. 2020

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Direct ethanol fuel cells (DEFCs) are regarded as an attractive power source with high energy density, bio‐renewability, and convenient storage and transportation. However, the anodic reaction of DEFCs, that is, the ethanol oxidation reaction (EOR), suffers from poor efficiency due to the low selectivity to CO2 (C1 pathway) and high selectivity to CH3COOH (C2 pathway). In this study, the selective EOR to CO2 can be achieved at the Rh–SnO2 interface in SnO2–Rh nanosheets (NSs). The optimized catalyst of 0.2SnO2–Rh NSs/C exhibits excellent alkaline EOR performance with a mass activity of 213.2 mA mgRh−1 and a Faraday efficiency of 72.8% for the C1 pathway, which are 1.7 and 1.9 times higher than those of Rh NSs/C. Mechanism studies indicate that the strong synergy at the Rh–SnO2 interface significantly promotes the breaking of CC bond of C2H5OH to form CO2, and facilitates oxidation of the poisonous intermediates (*CO and *CH3) to suppress the deactivation of the catalyst. This work not only provides a highly selective, active, and stable catalyst for the EOR, but also promotes fundamental research for the design of efficient catalysts via interface modification.

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Revisiting Zeta Potential, the Key Feature of Interfacial Phenomena, with Applications and Recent Advancements

et al. 2022

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Surface of a particle is inevitably charged. When the particle is surrounded by a fluid a potential difference arises between the surface and bulk, called zeta potential (ζ) which controls many interfacial properties of the particle involving in suspension, emulsion, colloid etc. Many phenomena happening around us have at least one step that passes through an interface. Thus, the application of ζ is practically uncountable. Discovered in late 19th century, almost past 120 years, the application of ζ has emerged in many areas to meet the fruitful need of mankind. However, to the best of our knowledge, there is no report disclosed citing the applications at one place as a ready tool for the readers. The present review accumulates extensive survey of literature, bringing out various aspects of ζ in chemistry, engineering, biology, material, and environmental sciences. A brief theoretical background mentioning the principle and practical applications were focused.

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Design and assembly of ternary Pt/Re/SnO2 NPs by controlling the zeta potential of individual Pt, Re, and SnO2 NPs

Cited by 24 publications

References 36 publications

Ternary Pt/Re/SnO2/C catalyst for EOR: Electrocatalytic activity and durability enhancement

Ternary Pt/Re/SnO2/C catalyst for EOR: Electrocatalytic activity and durability enhancement

Selective Ethanol Oxidation Reaction at the Rh–SnO₂ Interface

Revisiting Zeta Potential, the Key Feature of Interfacial Phenomena, with Applications and Recent Advancements

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Design and assembly of ternary Pt/Re/SnO2 NPs by controlling the zeta potential of individual Pt, Re, and SnO2 NPs

Cited by 24 publications

References 36 publications

Ternary Pt/Re/SnO2/C catalyst for EOR: Electrocatalytic activity and durability enhancement

Ternary Pt/Re/SnO2/C catalyst for EOR: Electrocatalytic activity and durability enhancement

Selective Ethanol Oxidation Reaction at the Rh–SnO2 Interface

Revisiting Zeta Potential, the Key Feature of Interfacial Phenomena, with Applications and Recent Advancements

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Product

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Selective Ethanol Oxidation Reaction at the Rh–SnO₂ Interface