Physico-chemical properties of Pd nanoparticles produced by Pulsed Laser Ablation in different organic solvents

Cristoforetti, G.; Pitzalis, Emanuela; Spiniello, Roberto; Ishak, Randa; Giammanco, F.; Muniz‐Miranda, Maurizio; Caporali, Stefano

doi:10.1016/j.apsusc.2011.11.084

Cited by 72 publications

(57 citation statements)

References 55 publications

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“…Characteristic peaks of palladium were observed for the hybrids, indicating that colloidal deposition was successful on oxide support as well as for carbon. In accordance to the literature the peaks of Pd (3d 5/2) and (3d 3/2) appear about 340.0 eV and 334.8 eV [18,19,21]. Several surface species such as Pd 0 , Pd 2+ and Pd 4+ on nanoparticle surface contribute to each of those Pd (3d)-XPS spectra.…”

Section: Catalyst Fabrication By Adsorption Of Palladium Nanoparticlesupporting

confidence: 79%

“…In a pioneering work, Nishi and Suzuki reported about laser fabrication of palladium nanoparticles at air-suspension interface [17]. Further work on laser fabrication of palladium nanoparticles in water [18,19] and organic solvents [20,21] predominantly gives attention to particle characterization including size, morphology, crystallinity and surface chemistry. Besides catalysis, laser-generated palladium nanoparticles were also reported to be interesting for surface-enhanced Raman scattering (SERS) [20] or their magnetic properties [22].…”

Section: Introductionmentioning

confidence: 98%

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Size control and supporting of palladium nanoparticles made by laser ablation in saline solution as a facile route to heterogeneous catalysts

Marzun

Nakamura

Zhang

et al. 2015

Applied Surface Science

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Section: Catalyst Fabrication By Adsorption Of Palladium Nanoparticlesupporting

confidence: 79%

Section: Introductionmentioning

confidence: 98%

Size control and supporting of palladium nanoparticles made by laser ablation in saline solution as a facile route to heterogeneous catalysts

Marzun

Nakamura

Zhang

et al. 2015

Applied Surface Science

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“…Carbonization of nanoparticles during PLA affects both their physicochemical properties and the size parameters of the particles in dispersions, as was demonstrated for palladium particles 59 .…”

Section: Introductionmentioning

confidence: 86%

Metal–support interaction in Pd/CeO₂ model catalysts for CO oxidation: from pulsed laser-ablated nanoparticles to highly active state of the catalyst

Slavinskaya

Kardash

Стонкус

et al. 2016

Catal. Sci. Technol.

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Palladium and cerium oxide nanoparticles obtained by pulsed laser ablation (PLA) in liquid (water or ethanol) have been used as nanostructured precursors for synthesis of the composite Pd/CeO2 catalysts. The initial mixture of Pd and CeO2 nanoparticles does not show catalytic activity at temperatures lower than 100°C. It has been found that the composites prepared by PLA in alcohol are easily activated by calcination in air at 450-600°C demonstrating high activity at room temperature. Application of XRD, TEM and XPS reveals that laser ablation in water leads to the formation of large and well crystallized nanoparticles of palladium and CeO2, whereas ablation in alcohol results in formation of much smaller PdCx nanoparticles. The activation of the composites takes place due to the strong Pd-ceria interaction which occurs easier for highly-dispersed defective particles obtained in alcohol. Such interaction implies the introduction of palladium ions into the ceria lattice with formation of a mixed phase of PdxCe1-xO2-x-δ solid solution at the contact spaces of palladium and cerium oxide nanoparticles. The TPR-CO and XPS data show clearly that on the surface of the PdxCe1-xO2-x-δ solid solution the oxidized PdOx(s)/Pd-O-Ce(s) clusters are formed. These clusters comprise the highly reactive oxygen which is responsible for the high catalytic activity in LTO CO.Please do not adjust margins Please do not adjust margins CO (molecules/cm 3 ), X is the CO conversion, V RM is the reaction mixture rate (cm 3 /sec), m is the weight of the sample (g), and

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“…The most common methods of nanostructures synthesis are broadly classified into physical and chemical methods. Some of the physical methods are pulsed laser ablation [136][137][138], laser deposition and matrix assisted pulsed laser evaporation (MAPPLE) [130,139], and ball milling [133][134][135], while the chemical methods are chemical precipitation [140][141][142], sonoelectrochemical synthesis [143][144][145][146][147][148], spray pyrolysis [149,150], chemical vapour deposition [151][152][153] and thermal decomposition [154]. Details on other methods under these categories can be found in the past 24 publications [38,155,156].…”

Section: Methods Of Preparation Of Nanoparticles and Nanofluidsmentioning

confidence: 99%

The Viscosity of Nanofluids: A Review of the Theoretical, Empirical, and Numerical Models

Meyer

Adio

Sharifpur

et al. 2015

Heat Transfer Engineering

206

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The enhanced thermal characteristics of nanofluids have made it one of the fastest-growing research areas in the last decade. Numerous researches have shown the merits of nanofluids in heat transfer equipment. However, one of the problems is the increase in viscosity due to the suspension of nanoparticles. This viscosity increase is not desirable in the industry, especially when it involves flow, such as in heat exchanger or micro-channel applications INTRODUCTIONColloidal suspension dates back to Maxwell's study in 1873 [1]. Though the idea behind his study was vivid, the imposed problems were too enormous for profitable engineering solutions [2]. In 1995, Choi [3] came up with a pioneering idea based on Maxwell's study and suspended ultrafine particles (nanoparticles) in conventional heat transfer fluids. His invention has opened up a myriad of opportunities in research and development. Nanofluids descriptively are colloidal suspensions containing metallic (Ag, Au, Al, Cu, Ni, etc.), non-metallic (single-and multi-wall carbon nanotube (SWCNT and MWCNT), Si, Graphene, etc.), metallic oxide (Al2O3, CuO, NiO2,TiO2, etc.) and oxides of non-metals (SiO2, SiC, MgO, CaCO3, etc.) nanoparticles suspended in conventional heat transfer fluids such as water, engine oil, ethylene glycol, transformer oil, gear oil or mixture of two or more heat transfer fluids [2,3]. When compared with previous microparticle suspensions in conventional heat transfer fluids, it is a special type of fluid with numerous applications potentials because of its enhanced thermal conductivity, stability and homogeneity [3,4]. Microscale particles in suspensions lead to abrasion, clogging of flow paths, pressure drop and high pumping power requirements, therefore, its sustainability was impossible. Besides, nanofluids can reduce the pumping power in engineering equipment significantly and do not pose the problem of clogging and abrasion of equipment flow paths [5][6][7][8]. Therefore, the design and engineering of physical systems are now being tailored towards using nanofluid as working fluid.The impact of colloidal suspension cuts across the fields of science, biological science, medical, pharmaceutical and engineering. In the context of sustainable energy development and thermal management, nanofluids are becoming more and more significant as the need for efficient thermal management is of paramount importance. Moreover, the level of miniaturisation of devices today as technology advances is overwhelming. Devices such as microprocessors, microelectromechanical systems (MEMS), nanoelectromechanical systems (NEMS), microchannels and lab-on-chips come with high-density heat flux that needs quick heat removal for 3 efficient performance, stability and durability, which, from all indications, could be provided by nanofluids for now [9][10][11][12]. The following are also emerging areas of applications of nanoparticles and nanofluids: (i) they could be useful in medicine in the targeted treatment of malignant cells without damaging healthy tis...

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Physico-chemical properties of Pd nanoparticles produced by Pulsed Laser Ablation in different organic solvents

Cited by 72 publications

References 55 publications

Size control and supporting of palladium nanoparticles made by laser ablation in saline solution as a facile route to heterogeneous catalysts

Size control and supporting of palladium nanoparticles made by laser ablation in saline solution as a facile route to heterogeneous catalysts

Metal–support interaction in Pd/CeO₂ model catalysts for CO oxidation: from pulsed laser-ablated nanoparticles to highly active state of the catalyst

The Viscosity of Nanofluids: A Review of the Theoretical, Empirical, and Numerical Models

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Physico-chemical properties of Pd nanoparticles produced by Pulsed Laser Ablation in different organic solvents

Cited by 72 publications

References 55 publications

Size control and supporting of palladium nanoparticles made by laser ablation in saline solution as a facile route to heterogeneous catalysts

Size control and supporting of palladium nanoparticles made by laser ablation in saline solution as a facile route to heterogeneous catalysts

Metal–support interaction in Pd/CeO2 model catalysts for CO oxidation: from pulsed laser-ablated nanoparticles to highly active state of the catalyst

The Viscosity of Nanofluids: A Review of the Theoretical, Empirical, and Numerical Models

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Product

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Metal–support interaction in Pd/CeO₂ model catalysts for CO oxidation: from pulsed laser-ablated nanoparticles to highly active state of the catalyst