Carbon Monoxide‐Templated Synthesis of Coral‐Like Clean PtPd Nanochains as Efficient Oxygen Reduction Catalyst

Zhang, Lian Ying; Wu, Diben; Gong, Yuyan; Liu, Hongdong; Chen, Wei; Bi, Lei

doi:10.1002/celc.201800575

Cited by 18 publications

(7 citation statements)

References 54 publications

(86 reference statements)

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“…The chronoamperometric curves of samples prepared with PVP, given in (B) and (D) panels of Figure , show that the catalytic activity decreases rapidly within the first 20 s and then declines slowly, followed by a proximate plateau especially for Pd-PC-PVP. These should be attributed to the competitive adsorption between ethanol and Pd oxide on the catalytic surface in the process of ethanol electro-oxidation, which results in a decrease of the oxidation reaction rate. − During this process, some Pd nanoparticles may lose their activities because of corrosion in the alkaline media. It is obvious that both of Pd-PC-PVP/GCE and Pd-NPC-PVP/GCE treated with KOH display lower current densities than those without pretreatments and Pd-NPC-PVP/GCE shows a higher activity with the time up to 1000 s.…”

Section: Results and Discussionmentioning

confidence: 99%

Insights into the Role of Poly(vinylpyrrolidone) in the Synthesis of Palladium Nanoparticles and Their Electrocatalytic Properties

Yin

Xue

et al. 2019

Langmuir

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Four types of palladium (Pd) nanoparticles were prepared from the systems containing PdCl2 or Na2PdCl4 with or without the assistance of poly(vinylpyrrolidone) (PVP). Two types of Pd nanoparticles obtained in the absence of PVP were obviously larger than those synthesized with the assistance of PVP. The former large Pd particles showed typical features in cyclic voltammetry in H2SO4 solution, whereas two types of small Pd nanoparticles did not. However, small nanoparticles treated first in an electrochemical way in 0.5 M KOH solution displayed the adsorption and desorption peaks similar to those of typical Pd-modified electrodes in H2SO4 solution. Large Pd nanoparticles from the PdCl2 synthesis system showed a catalytic specific current of 629 mA/mg in the electrocatalysis of ethanol, whereas large particles from the Na2PdCl4 system showed a current of 262 mA/mg. The maximum catalytic currents of small Pd nanoparticles without surface cleaning treatment were 1382 and 1019 mA/mg for samples from the Na2PdCl4 and PdCl2 systems, respectively, higher than those being treated in KOH solution first, and the electrocatalytic stability of the two untreated samples was better. However, small nanoparticles after the electrochemical treatment can reach the maximum catalytic current faster. The synthesis and structure–property relation of four types of Pd nanoparticles have been discussed and analyzed on the basis of systematically experimental data.

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Section: Results and Discussionmentioning

confidence: 99%

Insights into the Role of Poly(vinylpyrrolidone) in the Synthesis of Palladium Nanoparticles and Their Electrocatalytic Properties

Yin

Xue

et al. 2019

Langmuir

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“…However, its high combustibility limits its applications in some specific fields. Magnetic nanoparticles like Fe 3 O 4 have also been used extensively as the filler of polymeric composites because of their high efficiency, magnetic separation, and reusability . It has been proved that the addition of Fe 3 O 4 can improve the thermal stability and flame retardation performance of PVA .…”

Section: Introductionmentioning

confidence: 99%

One‐step synthesis of hydrophilic graphene‐Fe₃O₄‐PVA composite film: Micromorphology and performance

Wang

Zhang

Liu

et al. 2019

J of Applied Polymer Sci

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Multifunctional polymers have wide applications in smart materials. In this study, the multifunctional polymer (hydrophilic graphene‐Fe3O4‐PVA, GFP composite films) were synthesized by mixing with hydrophilic graphene (HG), ferrous ammonium sulfate, and ferric chloride in PVA solution through one‐pot coprecipitation method. GFP composite films were characterized by XRD, FT‐IR. Their morphology and particle size of Fe3O4 in GFP composite film were observed by TEM, SEM, and AFM. The results indicated that the morphology of Fe3O4 in GFP could be modulated from sphere shape to rod structure by the loading quantity of HG. Besides, many properties of GFP composite films were investigated. Firstly, GFP composite films demonstrated the fast magnetic response and high thermal stability. Secondly, the introduction of HG not only simultaneously enhanced the stiffness and ductility of GFP composite films, but also improved their flame retarding performance. Finally, HG regulating effect for the morphology of Fe3O4 in GFP and improvement mechanism of HG for mechanical performance of GFP composite films were illustrated. Both of them might be contributed to the hydrogen bonds effect among Fe3O4, PVA, and HG. Thus, these multifunctional GFP composite films can be applicable as the basis of fabricating smart materials in different fields. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48174.

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“…But they are often doped with other metals to reduce the platinum loading, and the development of efficient low content‐Pt catalysts was the main research direction for Pt‐based catalysts. Zhang et al [102] . presented the first synthesis of coral‐like PtPd nanochains (PtPd NCs) by using carbon monoxide as a reducing agent and a soft template.…”

Section: One‐dimensional Electrocatalyst In Orrmentioning

confidence: 99%

A Review of One‐Dimensional Nanomaterials as Electrode Materials for Oxygen Reduction Reaction Electrocatalysis

et al. 2022

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In fuel cells, the generally low oxygen reduction reactions (ORR) rate at the cathode is a major factor limiting the overall performance of fuel cell, so the development of high‐performance, stable and inexpensive ORR electrocatalysts is a major researching direction. Nano‐electrocatalysts, especially one‐dimensional (1D) electrocatalysts, exhibit good catalytic behavior in fuel cell reactions due to their unique anisotropic structure, large specific surface area, high elasticity and excellent stability. To date, many advanced 1D electrocatalysts have been reported for optimizing the cathode ORR of fuel cells. Therefore, a comprehensive review of the structural design of 1D nano‐electrocatalysts and a systematic analysis of their enhanced performance still need further summarized and concluded. In this review, we firstly introduce the main synthetic methods of 1D electrocatalysts, and then discuss the recent advances and advantages of different structured 1D electrocatalysts involving nanofibers, nanotubes, nanorods, nanochains, nanowires, nanobelts, nanoneedles, nanowhiskers, and coaxial nanocables. In addition, we also introduce 1D electrocatalysts while highlighting advanced strategies and preparation methods for these different structured 1D electrocatalysts to improve ORR performance. Finally, we prospect the future development of 1D ORR electrocatalysts.

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Carbon Monoxide‐Templated Synthesis of Coral‐Like Clean PtPd Nanochains as Efficient Oxygen Reduction Catalyst

Cited by 18 publications

References 54 publications

Insights into the Role of Poly(vinylpyrrolidone) in the Synthesis of Palladium Nanoparticles and Their Electrocatalytic Properties

Insights into the Role of Poly(vinylpyrrolidone) in the Synthesis of Palladium Nanoparticles and Their Electrocatalytic Properties

One‐step synthesis of hydrophilic graphene‐Fe₃O₄‐PVA composite film: Micromorphology and performance

A Review of One‐Dimensional Nanomaterials as Electrode Materials for Oxygen Reduction Reaction Electrocatalysis

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Carbon Monoxide‐Templated Synthesis of Coral‐Like Clean PtPd Nanochains as Efficient Oxygen Reduction Catalyst

Cited by 18 publications

References 54 publications

Insights into the Role of Poly(vinylpyrrolidone) in the Synthesis of Palladium Nanoparticles and Their Electrocatalytic Properties

Insights into the Role of Poly(vinylpyrrolidone) in the Synthesis of Palladium Nanoparticles and Their Electrocatalytic Properties

One‐step synthesis of hydrophilic graphene‐Fe3O4‐PVA composite film: Micromorphology and performance

A Review of One‐Dimensional Nanomaterials as Electrode Materials for Oxygen Reduction Reaction Electrocatalysis

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One‐step synthesis of hydrophilic graphene‐Fe₃O₄‐PVA composite film: Micromorphology and performance