Ethylenediaminetetraacetic acid mediated synthesis of palladium nanowire networks and their enhanced electrocatalytic performance for the hydrazine oxidation reaction

Ji, Yi‐Gang; Wang, Shiman; Li, Shu-Ni; Chen, Yu

doi:10.1016/j.electacta.2015.06.149

Cited by 20 publications

(8 citation statements)

References 53 publications

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“…To overcome this problem, it is necessary to use the rare and precious noble metal-based catalysts. 10,11 Up to now, a diversity of noble metals including Au, 12,13 Pt, 14,15 Ag, 16 and Pd 17,18 have utilized as electrocatalysts for hydrazine oxidation reaction (HzOR). Among these noble metals, Pd nanoparticles (NPs) are received more attention from scientic community as an anodic catalyst for DHzHPFCs due to their unique electronic properties.…”

Section: Introductionmentioning

confidence: 99%

Cobalt-modified palladium nanocatalyst on nitrogen-doped reduced graphene oxide for direct hydrazine fuel cell

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Cobalt-modified palladium nanocatalyst on nitrogen-doped reduced graphene oxide for direct hydrazine fuel cell

et al. 2021

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“…After the addition of Br − ions into the aqueous solution of PdCl 4 2− instantaneous formation of PdBr 4 2− is understandable owing to its 10 4 times higher stability constant than its chloride analog . In the presence of the strongly pronounced covalent bromide salt, Pd 2+ reduction becomes quite sluggish, favoring the oriented attachment of the evolved Pd nuclei . In the present case, bromide ions extend the capability of the system to direct Pd nanostructure synthesis, which is complete in about 16 h in contrast to the previous case, which requires 12 h .…”

Section: Resultsmentioning

confidence: 59%

Metal Bromide Controlled Interfacial Aromatization Reaction for Shape‐Selective Synthesis of Palladium Nanostructures with Efficient Catalytic Performances

Dutta

Ray

Roy

et al. 2016

Chemistry A European J

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Herein, the effect of diverse metal bromides for the shape evolution of palladium nanostructures (Pd NS) has been demonstrated. Aromaticity-driven reduction of bromopalladate(II) is optimized to reproducibly obtain different Pd NS at the water/organic layer interface. In this soft interfacial strategy, a redox potential driven reaction has been performed, forming the thermodynamically more stable (>10(4) -fold) PdBr4 (2-) precursor from PdCl4 (2-) by adding extra metal bromides. In the process, the reductant, Hantzsch dihydropyridine ester (DHPE), is aromatized. Interestingly, alkali metal bromides devoid of coordination propensity exclusively evolve Pd nanowires (Pd NWs), whereas in the case of transition metal bromides the metal ions engage the 'N' donor of DHPE at the interface, making the redox reaction sluggish. Hence, controlled Pd nanoparticles growth is observed, which evolves Pd broccolis (Pd NBRs) and Pd nanorods (Pd NRs) at the interface in the presence of NiBr2 and CuBr2 , respectively, in the aqueous solution. Thus, the effect of diverse metal bromides in the reaction mixture for tailor-made growth of the various Pd NS is reported. Among the as-synthesized materials, the Pd NWs stand to be superior catalysts and their efficiency is almost 6 and 2.5 times higher than commercial 20 % Pd/C in the electrooxidation of ethanol and Cr(VI) reduction reaction by formic acid, respectively.

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“…Hence, exploiting highly active electrocatalysts is critical to promoting the actual practice of DHFCs. So far, the design and synthesis of advanced electrocatalysts for HzOR are mainly centered on precious metals (Pt, Pd, Rh, Ru, Ag, Au, and their alloys), − non-noble metals (Ni, Co, Cu, and their alloys), − and metal-free carbon-based materials. , Unfortunately, the surfaces of the above-mentioned electrocatalysts are principally composed of low-index ({111} and/or {100}) exposed facets, and most of them present an impractically electrocatalytic activity for HzOR.…”

Section: Introductionmentioning

confidence: 99%

Boosting Electrocatalytic Hydrazine Oxidation Reaction on High-Index Faceted Au Concave Trioctahedral Nanocrystals

Liu

Jiang

Wang

et al. 2022

ACS Sustainable Chem. Eng.

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High-index faceted Au nanocrystals are explored as an efficient catalyst in the electrocatalytic hydrazine oxidation reaction (HzOR). Theoretical calculations reveal that the Au(551) surface is more active than the Au(111) surface toward HzOR with lower overpotentials, and the step atoms on the Au(551) surface serve as high-active sites to enhance HzOR. Experimentally, the as-prepared concave trioctahedral Au nanocrystals (TOH Au NCs) enclosed by {551} high-index facets (HIFs) exhibit excellent electrocatalytic performance of HzOR under both alkaline and acidic conditions. Particularly, the concave TOH Au NCs achieve very high activities of 272.3 mA cm–2 (mass activity, 1472.6 mA mg–1) and 329.5 mA cm–2 (mass activity, 1785.9 mA mg–1) for HzOR in 0.1 M HClO4 + 10 mM N2H4 and 0.1 M NaOH + 10 mM N2H4 solutions, respectively, which are superior to that of a commercial Au spheres catalyst. This study provides a new insight into electrocatalytic HzOR over Au high-index facets and presents a rational design and synthesis of high-performance electrocatalysts for HzOR.

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Ethylenediaminetetraacetic acid mediated synthesis of palladium nanowire networks and their enhanced electrocatalytic performance for the hydrazine oxidation reaction

Cited by 20 publications

References 53 publications

Cobalt-modified palladium nanocatalyst on nitrogen-doped reduced graphene oxide for direct hydrazine fuel cell

Cobalt-modified palladium nanocatalyst on nitrogen-doped reduced graphene oxide for direct hydrazine fuel cell

Metal Bromide Controlled Interfacial Aromatization Reaction for Shape‐Selective Synthesis of Palladium Nanostructures with Efficient Catalytic Performances

Boosting Electrocatalytic Hydrazine Oxidation Reaction on High-Index Faceted Au Concave Trioctahedral Nanocrystals

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