Fast Synthesis of Binary Pt–Sn Nanocatalysts onto Graphene Sheets for Promoted Catalytic Activity

Hsieh, Chien‐Te; Chang, Yan-Shuo; Roy, Anup; Yu, Po-Yuan; Yin, Ken‐Ming

doi:10.1016/j.electacta.2014.10.108

Cited by 13 publications

(4 citation statements)

References 37 publications

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“…2.04 (B)). This mechanism has also been reported for the improved catalytic activity of glucose oxidation reaction using binary Pt-Ni [56] and Pt-Sn [57] catalysts. Accordingly, the initial reaction can be written as:…”

Section: Gor On B-n-codoped Gqd Electrodessupporting

confidence: 66%

“…occupied by the oxygen compounds, whereas the B sites promote the stripping of originally oxygenated species (e.g., −OH), due to the higher electro-negativity of N compared to B atoms (~3.04 (N) vs. ~2.04 (B)). This mechanism has also been reported for the improved catalytic activity of glucose oxidation reaction using binary Pt-Ni [56] and Pt-Sn [57] catalysts. Accordingly, the initial reaction can be written as: The onset potential can usually be correlated to the electrochemical activity of an electro-catalyst; lower than the onset potential, better than the catalytic activity [58].…”

Section: Gor On B-n-codoped Gqd Electrodessupporting

confidence: 66%

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Electrocatalytic Oxidation of Glucose on Boron and Nitrogen Codoped Graphene Quantum Dot Electrodes in Alkali Media

Hsieh

Kao

et al. 2021

Catalysts

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A novel solvothermal technique has been developed in the presence of C/N/B precursor for synthesizing B-N-coped graphene quantum dots (GQDs) as non-metal electrocatalysts towards the catalytic glucose oxidation reaction (GOR). Both N-doped GQD and B-N-codoped GQD particles (~4.0 nm) possess a similar oxidation and amidation level. The B-N-codoped GQD contains a B/C ratio of 3.16 at.%, where the B dopants were formed through different bonding types (i.e., N‒B, C‒B, BC2O, and BCO2) inserted into or decorated on the GQDs. The cyclic voltammetry measurement revealed that the catalytic activity of B-N-codoped GQD catalyst is significantly higher compared to the N-doped GQDs (~20% increase). It was also shown that the GOR activity was substantially enhanced due to the synergistic effect of B and N dopants within the GQD catalysts. Based on the analysis of Tafel plots, the B-N-codoped-GQD catalyst electrode displays an ultra-high exchange current density along with a reduced Tafel slope. The application of B-N-codoped GQD electrodes significantly enhances the catalytic activity and results in facile reaction kinetics towards the glucose oxidation reaction. Accordingly, the novel design of GQD catalyst demonstrated in this work sets the stage for designing inexpensive GQD-based catalysts as an alternative for precious metal catalysts commonly used in bio-sensors, fuel cells, and other electrochemical devices.

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Section: Gor On B-n-codoped Gqd Electrodessupporting

confidence: 66%

Section: Gor On B-n-codoped Gqd Electrodessupporting

confidence: 66%

Electrocatalytic Oxidation of Glucose on Boron and Nitrogen Codoped Graphene Quantum Dot Electrodes in Alkali Media

Hsieh

Kao

et al. 2021

Catalysts

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“…The polyol method has been proposed as a suitable approach in which the PtSn/C (Pt/Sn=1:1) electrocatalysts were prepared . Also, pulse microwave deposition is a facile approach to fabricate PtSn catalysts onto graphene nanosheets (GNs) within a short time . In addition, simple chemical methods have been used to preparation PtSn catalysts, which show good catalytic performances towards ethanol oxidation.…”

Section: Introductionmentioning

confidence: 99%

One‐pot Synthesis of PtSn Bimetallic Composites and Their Application as Highly Active Catalysts for Ethanol Electrooxidation

et al. 2015

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PtSn nanoparticles with different molar ratio are fabricated by chemical reduction to form a relatively efficient catalyst for ethanol electrooxidation in an alkaline solution of KOH (1.0 m) containing C2H5OH (1.0 m). The surface composition and structure of the as‐prepared catalysts are characterized by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), and energy dispersive X‐ray spectroscopy (EDX). Cyclic voltammogram (CV) and chronoamperometric (CA) measurements are used to evaluate the electrochemical activity and stability of the as‐prepared catalysts. As the content of Sn in the catalysts changed, the catalysts showed different catalytic activity. The results indicate that the moderate addition of Sn can enhance the catalytic activity of Pt catalyst, and Pt3Sn1 displays the highest catalytic activity and stability among the as‐synthesized PtSn nanoparticles during the electrooxidation of ethanol.

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“…The alloy of Pt/Ru is by far the most widely used catalyst in PEMFC and DMFC. Other binary alloys such as Pt/Sn (such as Pt 75 Sn 25 [7] shown in Fig. 2) and Pt/Mo also have good resistance to CO poisoning.…”

Section: Proton Exchange Membrane Fuel Cellmentioning

confidence: 99%

Current Development of Key Materials for Low Temperature Fuel Cells

Zhang

Zhu

et al. 2017

KEM

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Low temperature fuel cells are promising environment-friendly energy conversion systems with high energy density and efficiency to be used as components of electronic devices for stationary and portable applications. In this paper, the key materials of the three types low temperature fuel cells are introduced, and the most recent advances related to the key materials and their character are reviewed. The current status of materials for electrolyte, catalyst and electrode materials is focused on.

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Fast Synthesis of Binary Pt–Sn Nanocatalysts onto Graphene Sheets for Promoted Catalytic Activity

Cited by 13 publications

References 37 publications

Electrocatalytic Oxidation of Glucose on Boron and Nitrogen Codoped Graphene Quantum Dot Electrodes in Alkali Media

Electrocatalytic Oxidation of Glucose on Boron and Nitrogen Codoped Graphene Quantum Dot Electrodes in Alkali Media

One‐pot Synthesis of PtSn Bimetallic Composites and Their Application as Highly Active Catalysts for Ethanol Electrooxidation

Current Development of Key Materials for Low Temperature Fuel Cells

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