Preparation of PdAg and PdAu nanoparticle-loaded carbon black catalysts and their electrocatalytic activity for the glycerol oxidation reaction in alkaline medium

Lam, Binh Thi Xuan; Chiku, Masanobu; Higuchi, Eiji; Inoue, Hiroshi

doi:10.1016/j.jpowsour.2015.07.086

Cited by 45 publications

(45 citation statements)

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“…[18]. Briefly, a solution of KBH 4 (4 mmol) in H 2 O (1.5 mL) was slowly added dropwise to a vigorously stirred solution containing RhCl 3 •3H 2 O (1 mmol) and N(Oct) 4 Br (4 mmol) in tetrahydrofuran (THF, 150 mL) at 30˚C in an Ar atmosphere.…”

Section: Preparation and Characterization Of Nanoparticle-loaded Carbmentioning

confidence: 99%

“…It is desirable to avoid the additional purification process to reduce costs and energy use. We also have developed a wet method to prepare metal nanoparticle-loaded carbon black (CB), in which rhodium chloride was reduced by KBH 4 in presence of tetraoctylammonium bromide (N(Oct) 4 Br) as stabilizer [18]. It is noteworthy that the stabilizer was easily removed by washing [18], which can overcome the above-mentioned problem.…”

Section: Introductionmentioning

confidence: 99%

“…We also have developed a wet method to prepare metal nanoparticle-loaded carbon black (CB), in which rhodium chloride was reduced by KBH 4 in presence of tetraoctylammonium bromide (N(Oct) 4 Br) as stabilizer [18]. It is noteworthy that the stabilizer was easily removed by washing [18], which can overcome the above-mentioned problem. Therefore, in this study, pure Rh nanoparticle-loaded carbon black (Rh/CB) catalyst was prepared by our wet method at room temperature, and in order to investigate the intrinsic catalysis of Rh nanoparticle catalyst for GOR in an alkaline medium.…”

Section: Introductionmentioning

confidence: 99%

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Rhodium Nanoparticle-Loaded Carbon Black Electrocatalyst for the Glycerol Oxidation Reaction in Alkaline Medium

Lam¹,

Chiku²,

Higuchi³

et al. 2016

ANP

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Rhodium nanoparticle-loaded carbon black (Rh/CB) was prepared by a wet method, and its activity and durability for glycerol oxidation reaction (GOR) in alkaline medium were compared with Pt, Pd and Au nanoparticle-loaded CB (Pt/CB, Pd/CB and Au/CB). In the cyclic voltammogram of the Rh/CB electrode, the redox waves due to hydrogen adsorption/desorption and the surface OH monolayer formation/reduction were observed at more negative potentials than the Pt/CB and Pd/CB electrodes. The onset and peak potentials of the GOR current densities for the Rh/CB electrode were ca. −0.55 and −0.30 V vs. Hg/HgO, respectively, which were 0.10 and 0.20 V more negative than the Pt/CB electrode whose GOR activity was the best, indicating that Rh was a fascinating metal for reducing the overpotential for GOR. In the electrostatic electrolysis with the Rh/CB and Pt/CB electrodes, the decrease in the GOR current density in the former with time was suppressed compared to that in the latter, suggesting that the tolerance to poisoning for the Rh/CB electrode was superior to that for the Pt/CB electrode.

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Section: Preparation and Characterization Of Nanoparticle-loaded Carbmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rhodium Nanoparticle-Loaded Carbon Black Electrocatalyst for the Glycerol Oxidation Reaction in Alkaline Medium

Lam¹,

Chiku²,

Higuchi³

et al. 2016

ANP

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“…The face-centered cubic (FCC) structured Pt/CNT, Au/CNT, Pd/CNT, , calculated using the full width half maximum (FWHM) method at the Gaussian-fitted (220) peaks using Scherrer's equation. Earlier researchers successfullyprepared Pd/C[53], Pd-S-HCNF[54], Pd/CNT[55], Pd@WC-Mo2C/C[56], PdSb 0.15 /C[21], PdNi/C[57], PdAg/C[58], and PdAu/C[59] for AOR with mean crystallite sizes of 4.0 nm, 5.1 nm, 10.5 nm, 6.1 nm, 3.8 nm, 3.1 nm, 3.7 nm and 3.7 nm, respectively. The mean crystallite sizes of Pd/CNT and PdAg/CNT are further reduced to 2.0 nm and 2.3 nm in the current work by the aqueous phase reduction method without using surfactants.…”

mentioning

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

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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

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“…The electrocatalytic properties of Pt 4 Co MDs were further assessed in 0.5 M KOH containing 0.5 M glycerol (Figure ), using Pt 3 Co NPs, Pt 5 Co NPs, and Pt black as the referenced materials. As depicted in Figure A, there are two anodic peaks obtained at 0.99 and 0.81 V in the forward and backward sweeps, respectively, which are well assigned to the oxidation of the surrounding chemisorbed glycerol molecules and the re‐oxidation of carbonaceous intermediates, respectively . Specifically, the E onset of Pt 4 Co MDs is 0.51 V for glycerol oxidation, which is more negative than those of Pt 3 Co NPs (0.58 V), Pt 5 Co NPs (0.57 V), and Pt black (0.58 V), indicating the significant enhancement in the GOR kinetics.…”

Section: Resultsmentioning

confidence: 90%

Facile Solvothermal Synthesis of Pt₄Co Multi‐dendrites: An Effective Electrocatalyst for Oxygen Reduction and Glycerol Oxidation

Jiang

Wang

et al. 2017

ChemElectroChem

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In this work, hierarchical Pt4Co multi‐dendrites (MDs) with abundant active sites were synthesized by using a one‐pot solvothermal co‐reduction approach, where cetyltrimethylammonium chloride (CTAC), citric acid, and oleylamine served as the structure director, eco‐friendly reducing agent, and co‐reductant, respectively. The architectures were mainly characterized by using a series of characterization techniques, demonstrating the enlarged electrochemically active surface area of 28.27 m2 g−1, much enhanced mass activity and specific activity for oxygen reduction reaction (279.14 mA mg−1Pt and 0.89 mA cm−2) and glycerol oxidation reaction (1422.56 mA mg−1Pt, 4.58 mA cm−2) comparable with commercial Pt black, along with the superior durability. These results demonstrate the potential applications of the synthesized Pt4Co MDs catalyst in energy storage and transformation.

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Preparation of PdAg and PdAu nanoparticle-loaded carbon black catalysts and their electrocatalytic activity for the glycerol oxidation reaction in alkaline medium

Cited by 45 publications

References 41 publications

Rhodium Nanoparticle-Loaded Carbon Black Electrocatalyst for the Glycerol Oxidation Reaction in Alkaline Medium

Rhodium Nanoparticle-Loaded Carbon Black Electrocatalyst for the Glycerol Oxidation Reaction in Alkaline Medium

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

Facile Solvothermal Synthesis of Pt₄Co Multi‐dendrites: An Effective Electrocatalyst for Oxygen Reduction and Glycerol Oxidation

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Preparation of PdAg and PdAu nanoparticle-loaded carbon black catalysts and their electrocatalytic activity for the glycerol oxidation reaction in alkaline medium

Cited by 45 publications

References 41 publications

Rhodium Nanoparticle-Loaded Carbon Black Electrocatalyst for the Glycerol Oxidation Reaction in Alkaline Medium

Rhodium Nanoparticle-Loaded Carbon Black Electrocatalyst for the Glycerol Oxidation Reaction in Alkaline Medium

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

Facile Solvothermal Synthesis of Pt4Co Multi‐dendrites: An Effective Electrocatalyst for Oxygen Reduction and Glycerol Oxidation

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Facile Solvothermal Synthesis of Pt₄Co Multi‐dendrites: An Effective Electrocatalyst for Oxygen Reduction and Glycerol Oxidation