A New Composite Support for Pd Catalysts for Ethylene Glycol Electrooxidation in Alkaline Solution: Effect of (Ru,Sn)O2 solid solution

Li, Wenliang; Huang, Yiyin; Tang, Dian; Zhang, Teng; Wang, Yaobing

doi:10.1016/j.electacta.2015.05.166

Cited by 23 publications

(14 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One method of reducing the cost of catalyst layer is to lower down the loading of Pt, while another method is to replace Pt with more abundant and less expensive Pd. To prepare highly active Pd-based catalysts, a number of strategies have been investigated, including controlling the morphology of Pd [15][16][17][18][19], alloying other elements to prepare Pd-M catalyst [20][21][22][23][24][25], and improving the surface area of the catalyst support [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

PdAg/CNT catalyzed alcohol oxidation reaction for high-performance anion exchange membrane direct alcohol fuel cell (alcohol = methanol, ethanol, ethylene glycol and glycerol)

Benipal

Liang

et al. 2016

Applied Catalysis B: Environmental

162

View full text Add to dashboard Cite

2 3 1.PdAg/CNT with 2.7 nm average particle size is prepared without using surfactants. 2.Ag outperforms Pt, Pd, and Au towards electrocatalytic aldehyde oxidation. 3.PdAg/CNT has high activity towards electrocatalytic alcohol oxidation. 4.PdAg/CNT was used as a highly active anode catalyst for direct alcohol fuel cells. 5.PdAg/CNT cleaves C-C bond of glycerol more effectively than Pd/CNT. 4 ABSTRACTSPdAg supported on carbon nanotubes (PdAg/CNT) with an average particle size of 2.7 nm is prepared by an aqueous phase reduction method for alcohol oxidation reaction in direct alcohol fuel cells. In a half-cell system with three electrodes, the peak mass activity of PdAg/CNT reaches 0.105 mA µg Pd -1 , 0.305 mA µg Pd -1 , 2.105 mA µg Pd -1 , and 8.53 mA µg Pd -1 for methanol oxidation reaction, ethanol oxidation reaction, ethylene glycol oxidation reaction, and glycerol oxidation reaction, respectively, in 1 M KOH 0.1 M alcohol electrolyte. These values are higher than the mass activity of Pd/CNT at the same applied potential. With PdAg/CNT (0.5 mg Pd per MEA -1 ) as an anode catalyst, a direct methanol fuel cell, a direct ethanol fuel cell, a direct ethylene glycol fuel cell and a direct glycerol fuel cell achieve peak power densities of 135.1 mW cm -2 , 202.3 mW cm -2 , 245.2 mW cm -2 , and 276.2 mW cm -2 , with corresponding peak mass activities of 270.2 mW mg Pd per MEA -1 , 404.6 mW mg Pd per MEA -1 , 490.4 mW mg Pd per MEA -1 , and 552.4 mW mg Pd per MEA -1 , respectively, at 80 °C and ambient pressure. Ag has shown excellent activity towards aldehyde (formaldehyde, acetaldehyde, and glyoxylate) oxidation, thus, the enhancement in alcohol oxidation on PdAg/CNT is proposed due to Ag's promotion of intermediate aldehyde oxidation. PdAg/CNT also improves the fuel efficiency of glycerol oxidation by contributing to the C-C bond cleavage of C 3 glycerol to C 2 oxalate.5

show abstract

Section: Introductionmentioning

confidence: 99%

PdAg/CNT catalyzed alcohol oxidation reaction for high-performance anion exchange membrane direct alcohol fuel cell (alcohol = methanol, ethanol, ethylene glycol and glycerol)

Benipal

Liang

et al. 2016

Applied Catalysis B: Environmental

162

View full text Add to dashboard Cite

show abstract

“…Although individual RuO 2 or SnO 2 , are found to show activity for CO oxidation, RuO 2 −SnO 2 composite oxides have been rarely studied as catalysts for those air pollution control reactions up to now. People have shown main interest on using RuO 2 −SnO 2 as electrochemical materials, such as electrode, super‐capacitors and electrocatalysts . It has been reported that change of preparation methods can significant affect the structure and performance of RuO 2 −SnO 2 composite oxides.…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported that change of preparation methods can significant affect the structure and performance of RuO 2 −SnO 2 composite oxides. By using a hydrothermal procedure and high‐energy mechanical alloying of pure SnO 2 and RuO 2 powders, rutile Sn−Ru−O solid solutions can be formed. Hu et al.…”

Section: Introductionmentioning

confidence: 99%

“…RuO 2 À SnO 2 composite oxides have been widely investigated as dimensionally stable anodes in chloro-alkali industry and oxygen evolution catalysts in water electrolysis [1][2][3][4][5][6][7] due to their excellent electrochemical properties. In addition, RuO 2 /SnO 2 also displays high reactivity and stability for HCl oxidation to produce Cl 2 , which is known as Deacon reaction.…”

Section: Introductionmentioning

confidence: 99%

“…People have shown main interest on using RuO 2 À SnO 2 as electrochemical materials, such as electrode, super-capacitors and electrocatalysts. [4][5][6] It has been reported that change of preparation methods can significant affect the structure and performance of RuO 2 À SnO 2 composite oxides. By using a hydrothermal procedure [4][5][6] and high-energy mechanical alloying of pure SnO 2 and RuO 2 powders, [5] rutile SnÀ RuÀ O solid solutions can be formed.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Influence of RuO₂Distribution and Dispersion on the Reactivity of RuO₂−SnO₂Composite Oxide Catalysts Probed by CO Oxidation

Liu

Huang

et al. 2019

ChemCatChem

View full text Add to dashboard Cite

To elucidate the distribution and dispersion of RuO2 species on the reactivity, RuO2−SnO2 catalysts with 2 % and 5 % Ru contents have been prepared with impregnation (IMP), deposition‐precipitation (DP) and co‐precipitation (CP) methods, and probed by CO oxidation. With IMP and DP methods, RuO2 crystallites are predominantly formed on the catalyst surface, which is favorable for CO oxidation. Moreover, the IMP catalyst possesses surface RuO2 having smaller mean crystallite size and better dispersion than the DP catalyst, thus SnRuO‐IMP displays higher activity than SnRuO‐DP at the same Ru loadings. However, with CP method, RuO2 species is mainly present as Ru4+ cations in the lattice of rutile SnO2 to form a solid solution structure below the lattice capacity, which is less reactive than the surface RuO2 due to the restriction by the SnO2 lattice. In conclusion, surface RuO2 is revealed to be the active species, whose amount and dispersion determine the activity of the catalysts. By changing preparation methods, the distribution of RuO2 species in the catalysts is varied and impacts the reactivity of the catalysts evidently. The traditional impregnation is found to be the best method to prepare RuO2−SnO2, which shows the highest activity among all the catalysts.

show abstract

Fabrication of Trimetallic Pt−Pd−Co Porous Nanostructures on Reduced Graphene Oxide by Galvanic Replacement: Application to Electrocatalytic Oxidation of Ethylene Glycol

Shahrokhian

Rezaee

2017

Electroanalysis

View full text Add to dashboard Cite

In present work, reduced graphene oxide nanosheets (rGO) decorated with trimetallic three‐dimensional (3D) Pt−Pd−Co porous nanostructures was fabricated on glassy carbon electrode (Pt−Pd−Co/rGO/GCE). First, GO suspension was drop‐casted on the electrode surface, then GO film reduction was carried out by cycling the potential in negative direction to form the rGO film modified GCE (rGO/GCE). Then, electrodeposition of the cobalt nanoparticles (CoNPs) as sacrificial seeds was performed onto the rGO/GCE by using cyclic voltammetry. Afterward, Pt−Pd−Co 3D porous nanostructures fabrication occurs through galvanic replacement (GR) method based on a spontaneous redox process between PtCl2, PdCl2, and CoNPs. The morphology and structure of the Pt−Pd−Co/rGO porous nanostructure film was characterized by scanning electron microscopy, energy dispersive spectroscopy and X‐ray diffraction method. The performance of the prepared electrode was investigated by various electrochemical methods including, cyclic voltammetry and electrochemical impedance spectroscopy. The electrocatalytic activity of the as‐prepared modified electrode with high surface areas was evaluated in anodic oxidation of ethylene glycol. The study on electrocatalytic performances revealed that, in comparison to various metal combinations in modified electrodes, trimetallic Pt−Pd−Co/rGO/GCE exhibit a lower onset potential, significantly higher peak current density, high durability and stability for the anodic oxidation of ethylene glycol. The excellent performances are attributed to the rGO as catalysts support and resulting synergistic effects of the trimetallic and appropriate characteristics of the resulted 3D porous nanostructures. Moreover, the influence of various concentrations of ethylene glycol, the potential scan rate and switching potential on the electrode reaction, in addition, long‐term stability have been studied by chronoamperometric and cyclic voltammetric methods.

show abstract

A New Composite Support for Pd Catalysts for Ethylene Glycol Electrooxidation in Alkaline Solution: Effect of (Ru,Sn)O2 solid solution

Cited by 23 publications

References 52 publications

PdAg/CNT catalyzed alcohol oxidation reaction for high-performance anion exchange membrane direct alcohol fuel cell (alcohol = methanol, ethanol, ethylene glycol and glycerol)

PdAg/CNT catalyzed alcohol oxidation reaction for high-performance anion exchange membrane direct alcohol fuel cell (alcohol = methanol, ethanol, ethylene glycol and glycerol)

The Influence of RuO₂Distribution and Dispersion on the Reactivity of RuO₂−SnO₂Composite Oxide Catalysts Probed by CO Oxidation

Fabrication of Trimetallic Pt−Pd−Co Porous Nanostructures on Reduced Graphene Oxide by Galvanic Replacement: Application to Electrocatalytic Oxidation of Ethylene Glycol

Contact Info

Product

Resources

About

A New Composite Support for Pd Catalysts for Ethylene Glycol Electrooxidation in Alkaline Solution: Effect of (Ru,Sn)O2 solid solution

Cited by 23 publications

References 52 publications

PdAg/CNT catalyzed alcohol oxidation reaction for high-performance anion exchange membrane direct alcohol fuel cell (alcohol = methanol, ethanol, ethylene glycol and glycerol)

PdAg/CNT catalyzed alcohol oxidation reaction for high-performance anion exchange membrane direct alcohol fuel cell (alcohol = methanol, ethanol, ethylene glycol and glycerol)

The Influence of RuO2Distribution and Dispersion on the Reactivity of RuO2−SnO2Composite Oxide Catalysts Probed by CO Oxidation

Fabrication of Trimetallic Pt−Pd−Co Porous Nanostructures on Reduced Graphene Oxide by Galvanic Replacement: Application to Electrocatalytic Oxidation of Ethylene Glycol

Contact Info

Product

Resources

About

The Influence of RuO₂Distribution and Dispersion on the Reactivity of RuO₂−SnO₂Composite Oxide Catalysts Probed by CO Oxidation