Preparation of highly dispersed and ultrafine Pd/C catalyst and its electrocatalytic performance for hydrazine electrooxidation

Yan, Liang; Zhou, Yue; Ma, Jun; Zhao, Jian; Chen, Yu; Tang, Yawen; Lu, Tianhong

doi:10.1016/j.apcatb.2011.02.001

Cited by 83 publications

(12 citation statements)

References 88 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 scientific 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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“…The CVs of HzOR over PNC3 at different scan rates are also acquired (Figure a). The linear relationship between the current density ( i / A ) versus square root of scan rates (ν 1/2 ) and the dependence of peak potential ( E p ) with respect to the logarithm of scan rate (log ν) (Figure S8) indicates that the oxidation of hydrazine over the material depends on diffusion processes . The diffusion coefficient ( D ) is estimated from the linear fit of current density versus inverse square root of time (Figure S9) using the Cottrell equation (see Supporting Information), and its value is found to be 4.09 × 10 –4 cm 2 s –1 .…”

Section: Resultsmentioning

confidence: 99%

Nanoporous Heteroatom-Doped Carbons Derived from Cotton Waste: Efficient Hydrazine Oxidation Electrocatalysts

Silva

Cazetta

Zhang

et al. 2019

ACS Appl. Energy Mater.

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In this work, cotton-based denim waste is successfully used as a precursor to synthesize nanoporous P- and N-co-doped carbon materials that can serve as efficient electrocatalysts for the hydrazine oxidation reaction (HzOR). In the synthesis, the cotton denim waste is mixed with H3PO4 in two different denim/H3PO4 (wt/vol) ratios, namely, 1:1 and 1:3, wherein H3PO4 serves as both an activating agent and a source of P dopant atoms while the indigo carmine dye present in denim serves as a source of N dopant atoms to the carbon materials. The resulting P- and N-co-doped carbon materials, named PNC1 and PNC3, respectively, are characterized by various analytical techniques. The XPS spectra show that PNC1 has ca. 2.17 atomic % P and 1.95 atomic % N whereas PNC3 has 2.54 atomic % P and 0.71 atomic % N. Pore analyses by N2 porosimetry indicate that PNC1 has a higher surface area (1582 m2 g–1) than PNC3 (486 m2 g–1), although the former has a lower mesopore volume (0.39 cm3 g–1) than the latter (0.58 cm3 g–1). The SEM images of the two materials also show some notable structural differences. The results overall indicate that the structures and compositions of the materials can be easily tailored by varying the ratio of denim/H3PO4 in the precursor. The electrocatalytic activities of PNC1 and PNC3 toward HzOR were then evaluated, and PNC3 is found to be a better electrocatalyst than PNC1. In a 100 mmol L–1 hydrazine solution in phosphate buffer saline (PBS) at pH 7.4, PNC3 electrocatalyzes the reaction at a lower peak potential (ca. 0.70 V vs RHE) than PNC1 (ca. 0.77 V vs RHE). Additionally, the current density obtained during HzOR over PNC3 is higher (by 1.29 times) than the one obtained over PNC1. Furthermore, the onset potential by which PNC3 electrocatalyzes HzOR (0.42 V vs RHE) is comparable to or better than the values reported for some of the best HzOR electrocatalysts in the literature. Besides their high electrocatalytic activity, the materials remain stable during electrocatalysis of HzOR.

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“…Cyclic voltammetry measurements were conducted in N 2 -saturated 0.05 M H 2 SO 4 solution or N 2 -saturated 0.5 M H 2 SO 4 solution with 0.5 M HCOOH. The electrochemically active surface area (ESCA) of the Pd electrocatalyst was calculated using the following equation by measuring the reduction charge of the Pd(OH) 2 on the surface and assuming a value of 420 μC cm −2 for the reduction charge of a monolayer of Pd(OH) 2 on a Pd surface [37,38]:…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Ethylenediamine tetramethylene phosphonic acid assisted synthesis of palladium nanocubes and their electrocatalysis of formic acid oxidation

Zhao

Liu

Gong

et al. 2016

J Solid State Electrochem

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The synthesis of Pd nanocrystals of controlled size and morphology has drawn enormous interest due to their catalytic activity. We report a new and efficient strategy for the one-step synthesis of monodispersed Pd nanocubes with ethylenediamine tetramethylene phosphonate (EDTMP) as a complex-forming and capping agent. The morphology, structure, and growth mechanism of the Pd nanocubes were fully characterized via selected area electron diffraction (SAED), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). It was found that the morphology of the Pd nanocrystals in the proposed EDTMP-PdCl 2 system could be changed from octahedrons to nanocubes simply by adjusting the amount of iodide used during synthesis. After UV/ozone and electrochemical cleaning, the as-prepared Pd nanocubes demonstrated excellent electrocatalytic activity and stability during formic acid oxidation, owing to their abundant {100} facets and small particle size.

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Preparation of highly dispersed and ultrafine Pd/C catalyst and its electrocatalytic performance for hydrazine electrooxidation

Cited by 83 publications

References 88 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

Nanoporous Heteroatom-Doped Carbons Derived from Cotton Waste: Efficient Hydrazine Oxidation Electrocatalysts

Ethylenediamine tetramethylene phosphonic acid assisted synthesis of palladium nanocubes and their electrocatalysis of formic acid oxidation

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