Palladium Oxide Nanoparticles: Preparation, Characterization and Catalytic Activity Evaluation

Muniz‐Miranda, Maurizio; Zoppi, Angela; Muniz‐Miranda, Francesco; Calisi, Nicola

doi:10.3390/coatings10030207

Cited by 18 publications

(13 citation statements)

References 50 publications

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“…Our results extend earlier data on ultrasmall platinum group metal oxide nanoparticles. Palladium nitrate was hydrolyzed in water and formed palladium(II) oxide nanoparticles with a size of 2.2 nm, as shown by HRTEM, XPS, and XRD . Platinum(II) oxide particles were prepared on C 3 N 4 nanosheets with a size of 2 nm.…”

Section: Results and Discussionmentioning

confidence: 99%

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Water-Based Synthesis of Ultrasmall Nanoparticles of Platinum Group Metal Oxides (1.8 nm)

et al. 2022

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Ultrasmall nanoparticles of platinum group metal oxides (core diameter of about 1.8 nm) were prepared by alkaline hydrolysis of metal precursors in the presence of NaBH4 and by colloidal stabilization with tripeptide glutathione. We obtained water-dispersed nanoparticles of Rh2O3, PdO, RuO2, IrO2, Os/OsO2, and Pt/PtO. Their size was probed using high-resolution transmission electron microscopy, differential centrifugal sedimentation, small-angle X-ray scattering, and diffusion-ordered 1H NMR spectroscopy (1H DOSY). Their oxidation state was clearly determined using X-ray photoelectron spectroscopy, X-ray powder diffraction, and electron diffraction. The chemical composition of the nanoparticles, that is, the ratio of the metal oxide core and glutathione capping agent, was quantitatively determined by a combination of these methods.

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Section: Results and Discussionmentioning

confidence: 99%

“…Palladium nitrate was hydrolyzed in water and formed palladium(II) oxide nanoparticles with a size of 2.2 nm, as shown by HRTEM, XPS, and XRD. 50 Platinum(II) oxide particles were prepared on C 3 N 4 nanosheets with a size of 2 nm. The oxidation state was determined by XPS.…”

Section: T H Imentioning

confidence: 99%

Water-Based Synthesis of Ultrasmall Nanoparticles of Platinum Group Metal Oxides (1.8 nm)

et al. 2022

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“…Simulations were used to examine how wollastonite might interact with carbohydrates in wood cell-wall polymers using OpenMX3.8 (Tokyo, Japan) through density functional theory (DFT) [ 31 , 32 , 33 , 34 , 35 ]. Possible interactions were simulated using generalized gradient approximation (GGA), as described by Perdew–Burke–Ernzerhof (PBE) [ 36 ].…”

Section: Methodsmentioning

confidence: 99%

Potential Use of Wollastonite as a Filler in UF Resin Based Medium-Density Fiberboard (MDF)

et al. 2020

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Urea-formaldehyde (UF) resins are primary petroleum-based, increasing their potential environmental footprint. Identifying additives to reduce the total amount of resin needed without adversely affecting the panel properties could reduce these impacts. Wollastonite is a mineral containing calcium and silica that has been used as an additive in a variety of materials and may be useful as a resin extender. Nanoscale wollastonite has been shown to enhance the panel properties but is costly. Micron-scale wollastonite may be a less costly alternative. Medium-density fiberboards were produced by blending a hardwood furnish with UF alone, micron-sized wollastonite alone, or a 9:1 ratio of UF to wollastonite. Panels containing of only wollastonite had poor properties, but the properties of panels with 9:1 UF/wollastonite were similar to the UF-alone panels, except for the internal bond strength. The results suggest that small amounts of micron-sized wollastonite could serve as a resin extender. Further studies are suggested to determine if the micron-sized material has similar positive effects on the resin curing rate.

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“…In all spectra, the characteristic bands of SnO2 are observed at approximately 486, 602, and 780-793 cm -1 , corresponding to the active bands of SnO2 Eg, A1g, and B2g, respectively [38,39]. Additionally, a band centred at 639 cm -1 , corresponding to the bending of the PdO-H bond [40], indicates the oxidation of Pd as a function of potential in the Pd/ATO catalyst.…”

Section: Resultsmentioning

confidence: 92%

Methane to Methanol Conversion Using PEM Fuel Cell and PdAu/ATO Nanomaterials

Maia¹,

Nandenha²,

Gonçalves³

et al. 2023

Preprint

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This study investigates the use of Au-doped Pd anodic electrocatalysts on ATO support for the conversion of methane to methanol. The study involves cyclic voltammetry, in-situ Raman spectra, polarization curves, and FTIR analysis to determine the optimal composition of gold and palladium for enhancing the conversion process. The results demonstrate the potential for utilizing methane as a feedstock for producing sustainable energy sources. Pd75Au25/ATO electrode exhibited the highest OCP value, and Pd50Au50/ATO had the highest methanol production value at a potential of 0.05 V. Therefore, it can be concluded that an optimal composition of gold and palladium exists to enhance the conversion of methane to methanol. The findings contribute to the development of efficient and sustainable energy sources, highlighting the importance of exploring alternative ways to produce methanol.

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Palladium Oxide Nanoparticles: Preparation, Characterization and Catalytic Activity Evaluation

Cited by 18 publications

References 50 publications

Water-Based Synthesis of Ultrasmall Nanoparticles of Platinum Group Metal Oxides (1.8 nm)

Water-Based Synthesis of Ultrasmall Nanoparticles of Platinum Group Metal Oxides (1.8 nm)

Potential Use of Wollastonite as a Filler in UF Resin Based Medium-Density Fiberboard (MDF)

Methane to Methanol Conversion Using PEM Fuel Cell and PdAu/ATO Nanomaterials

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