Electrocatalytic enhancement of platinum and palladium metal on polydopamine reduced graphene oxide support for alcohol oxidation

Themsirimongkon, Suwaphid; Ounnunkad, Kontad; Saipanya, Surin

doi:10.1016/j.jcis.2018.06.072

Cited by 37 publications

(20 citation statements)

References 53 publications

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“…However, the PtCo@Co‐BA catalyst exhibits the highest value of I f / I b , indicating the best tolerance to CO‐poisoning. The performance of the prepared catalysts toward alcohol oxidation was compared with other Pt based catalysts in the previously reports, which is illustrated in Figure . Relatively higher specific activity was exhibited by the PtCo@Co‐BA/Gr catalyst.…”

Section: Resultsmentioning

confidence: 99%

“…Comparison of literature reports on specific activity of Pt based catalyst and Pt/C catalyst toward alcohol oxidation. PtCo@Co‐BA/Gr are the catalysts reported in this work.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the synthesis of Pt based catalysts with high durability has become hot topic in material science. Two modifications have been focused to enhance the stability of Pt based catalysts . i) Pt self‐assembled nanostructures or superparticles have been explored due to their unique structural characteristics, consisting of high porosity, large surface area per unit volume, and stable self‐assembled frameworks.…”

Section: Introductionmentioning

confidence: 99%

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Electrocatalytic Enhancement of 0D/1D/2D Multidimensional PtCo Alloy@Cobalt Benzoate/Graphene Composite Catalyst for Alcohol Electro‐Oxidation

Bai

Tian²,

Wang

et al. 2019

Adv Materials Inter

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PtCo alloy@cobalt benzoate/graphene (PtCo@Co‐BA/Gr) composite catalyst with 0D/1D/2D multidimensional structure is presented with simple solvothermal approach. As the introduced critical carrier, benzoic acid cobalt (II) (Co‐BA) has porous channels matching the size of platinum (Pt) nanoparticles and can enable PtCo alloy particles to be formed in its 1D mesopores through in situ reduction. Experiments indicate that the hydroxyl (OH) groups on the outer surface of Co‐BA are beneficial to form a strong interaction between Co‐BA and graphene. Compared with commercial Pt/C catalyst, the prepared PtCo@Co‐BA/Gr composite catalysts display an enlarged electrochemically active surface area, enhanced catalytic activity, and prolonged durability in acidic media toward the oxidation of various alcohols, such as methanol, ethanol, and ethylene glycol, which is mainly due to the increased surface area of PtCo by the confinement of mesoporous Co‐BA fiber, the promotion of water molecule dissociation of Co‐BA skeleton, and the improvement of conductivity by the introduction of graphene.

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Section: Resultsmentioning

confidence: 99%

“…Comparison of literature reports on specific activity of Pt based catalyst and Pt/C catalyst toward alcohol oxidation. PtCo@Co‐BA/Gr are the catalysts reported in this work.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrocatalytic Enhancement of 0D/1D/2D Multidimensional PtCo Alloy@Cobalt Benzoate/Graphene Composite Catalyst for Alcohol Electro‐Oxidation

Bai

Tian²,

Wang

et al. 2019

Adv Materials Inter

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“…e addition of Gr to catalyst carriers enlarges the contact area between reagents and significantly enhances catalytic performance. Sensors using certain metal elements (e.g., Pt and Ag) as a matrix can be quite sensitive, and the addition of these metal elements can significantly increase catalysis efficiency [44][45][46][47]. Ouyang used Gr to coat a flexible Ag membrane sensor, which was used to detect malachite green with high sensitivity.…”

Section: Applications Of Graphene/inorganic Composite Materialsmentioning

confidence: 99%

A Review on the Contemporary Development of Composite Materials Comprising Graphene/Graphene Derivatives

Long

Weng

2020

Advances in Materials Science and Engineering

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As two-dimensional materials with a high specific surface area, strength, and electrical and thermal conductivity, graphene (Gr) and its derivatives have great application prospects in various fields such as structural reinforcement, energy storage, optics, and electrical and thermal conductivity. However, the current preparation method of Gr is complicated and expensive. Its preparation cost can be reduced using Gr composites that include inorganic materials or other polymers. Composite materials comprising Gr and inorganic materials are generally prepared using sinter molding, chemical reduction, or chemical deposition. Gr should be able to mitigate several of the defects resulting from inorganic materials, including their poor toughness, small specific capacity, and low photoelectric conversion rate. The mitigation of these defects should result in the expansion of the applications of Gr composites for use in capacitors, catalysts, and sensors, among other devices. Although solution blending or in situ polymerization produces a relatively good mixing effect, in general, melt blending is used in the large-scale processing of Gr composites with polymer materials. Gr can be used to partially mitigate several weaknesses of polymer materials, including their low strength, poor electrical and thermal conductivities, and poor isolation performance, and expand the applications of Gr composites for use in electrical and thermal conductive materials and functional membrane materials, among other applications. The goal of the present paper is to introduce the structural properties of Gr and a surface modification method for Gr. In addition, the preparation methods and application fields of different Gr composite materials are reviewed. Finally, the development prospects and key issues are discussed.

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“…In addition, the CO‐stripping onset potential of 10 wt % Pt/N‐NOMC‐2D (0.432 V vs. SCE) was much lower than that of 10 wt % Pt/NOMC‐2D (0.441 V vs. SCE) and 10 wt % Pt/XC‐72 (0.452 V vs. SCE), as shown in Figure C. The low onset potential of Pt/NOMC‐2D is due to its high content of oxygen‐containing functional groups on the nitrogen‐doped carbon material, which strips CO ads on the adjacent Pt NPs (Figure D). The oxygen‐containing groups also refresh Pt active sites in PtPd and PtRu alloys by accelerating the oxidation of CO ads intermediates for MOR and EOR under acidic conditions …”

Section: Heteroatom‐doped Carbon Supportsmentioning

confidence: 99%

Intrinsic Effect of Carbon Supports on the Activity and Stability of Precious Metal Based Catalysts for Electrocatalytic Alcohol Oxidation in Fuel Cells: A Review

Zhang

Xiang

et al. 2020

ChemSusChem

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Electrocatalyst supports, in particular carbonaceous materials, play critical roles in the electrocatalytic activity and stability of precious metal group (PMG)‐based catalysts such as Pt, Pd, and Au for the electrochemical alcohol oxidation reaction (AOR) of fuels such as methanol and ethanol in polymer electrolyte membrane fuel cells (PEMFCs). Carbonaceous supports such as high surface area carbon provide electronic contact throughout the catalyst layer, isolate PMG nanoparticles (NPs) to maintain high electrochemical surface area, and provide hydrophobic properties to avoid flooding of the catalyst layer by liquid water produced. Compared to high surface area carbon, PMG catalysts supported on 1D and 2D carbon materials such as graphene and carbon nanotubes show enhanced activity and durability due to the intrinsic effect of the underlying carbonaceous supports on the electronic states of PMG NPs. The modification of the electronic environment, in particular the d‐band centers of PMG NPs, weakens the adsorption of AOR intermediates, facilitates breaking of the C−C bonds, and thus enhances the electrocatalytic activity of PMG catalysts. The doping of heteroatoms further facilitates the electrocatalytic activity for the AOR through the structural, bifunctional, and electronic effects, in addition to the enhanced dispersion of PMG NPs in the carbon support. The prospects for the development of effective PMG‐based catalysts for high‐performance alcohol‐fuel‐based PEMFCs is discussed.

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Electrocatalytic enhancement of platinum and palladium metal on polydopamine reduced graphene oxide support for alcohol oxidation

Cited by 37 publications

References 53 publications

Electrocatalytic Enhancement of 0D/1D/2D Multidimensional PtCo Alloy@Cobalt Benzoate/Graphene Composite Catalyst for Alcohol Electro‐Oxidation

Electrocatalytic Enhancement of 0D/1D/2D Multidimensional PtCo Alloy@Cobalt Benzoate/Graphene Composite Catalyst for Alcohol Electro‐Oxidation

A Review on the Contemporary Development of Composite Materials Comprising Graphene/Graphene Derivatives

Intrinsic Effect of Carbon Supports on the Activity and Stability of Precious Metal Based Catalysts for Electrocatalytic Alcohol Oxidation in Fuel Cells: A Review

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