Synthesis of Platinum Nanoparticles Stabilized by Poly(vinylpyrrolidone) with Application in Heat Management Systems for Internal Combustion Chambers Anna Dzimitrowicz 1 * ID Piotr Cyganowski 2 ID Pawel Pohl 1 ID Dorota Jermakowicz-Bartkowiak 2 Dominik Terefinko 1 and Piotr Jamroz 1 ID The field of nanotechnology is the most active area of research in modern materials science Though there are many chemical as well as physical methods green synthesis of nanomaterials is the most emerging method of synthesis We report the synthesis of antibacterial silver nanoparticles (AgNPs) using leaf broth of medicinal herb Ocimum sanctum/i (Tulsi)

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The catalytic use of highly efficient poly(N-vinyl-2-pyrrolidone)-stabilized palladium-platinum nanoparticles (4 2 1 9 nm) in the hydrolysis of ammonia-borane is reported The catalyst is prepared by co-reduction of two metal ions in ethanol/water mixture by an alcohol reduction method and characterized by transmission electron microscopy X-ray photoelectron spectroscopy and UV-Vis

Playing the platinum card: Monodisperse Pt nanoparticles and 3D dendritic Pt nanoclusters (see image) stabilized by cetyltrimethylammonium bromide were synthesized selectively at pH values of ≈7 and ≈1 7 respectively Both Pt species which can be immobilized electrochemically onto glassy carbon electrodes possess excellent catalytic activity toward the reduction of O 2

The synthesis and full characterization of platinum nanoparticles (Pt NPs) prepared by decomposition of the Pt(dba) 2 complex in the presence of CO and H 2 and stabilized either sterically by a polymer polyvinylpyrrolidone or chemically by a ligand diphenylphosphinobutane are reported In these studies 13 CO was used as a probe molecule to investigate the surface of the particles using IR

2 2 Synthesis of Aryl-Stabilized Pt Nanoparticles The nanoparticles were prepared by the coreduction of H 2 PtCl 4 and aryl diazonium salts a procedure that has been used previously for the synthesis of butylphenyl-stabilized Pd and Pt nano-particles 11 16 Briefly the diazonium salts were synthesized from

Synthesized a variety of polymer stabilized nanoparticles and developed a general tuneable method for coating nanoparticles onto the surfaces of polystyrene microspheres Optimized a method for the controlled assembly of bare and nanoparticle functionalized polystyrene microspheres into single layer hexagonal close-packed arrays

Fabrication of palladium and platinum nanocatalysts

Feb 17 2020Following the thermal reductive method the synthesis of nanoparticles stabilized by polyvinylpyrrolidone was performed using ethylene glycol as a reductant and solvent The PVP-capped platinum and palladium were well-dispersed and stable for more than 3 months and their average sizes were 2 53 0 07 nm and 4 13 0 14 nm By means of inductively coupled plasma mass spectroscopy

Crystalline Pt nanoparticles (see Figure) of about 2 nm corresponding to a cubo-octahedron with 3 edge atoms covered by organosilane fragments were obtained These nanoparticles are active and chemio-selective in the hydrogenation of cetopentoylactone into the corresponding alcohol and their properties were compared to silica supported Pt

In this project monodisperse rhodium and platinum nanoparticles of controlled size and shape have been synthesized by solution phase polyol reduction stabilized by polyvinylpyrrolidone (PVP) Model catalysts have been developed using these nanoparticles by two methods: synthesis of mesoporous silica (SBA-15) in the presence of nanoparticles

Several PVP-stabilized colloidal platinum metals nanoparticles have been synthesized and characterized by FTIR and TEM Comparing with the pure PVP carbonyl groups of PVP in the mixture of PVP and the metal precursors or in the PVP-stabilized metal nanoparticles have obvious peak shifts in

Several PVP-stabilized colloidal platinum metals nanoparticles have been synthesized and characterized by FTIR and TEM Comparing with the pure PVP carbonyl groups of PVP in the mixture of PVP and the metal precursors or in the PVP-stabilized metal nanoparticles have obvious peak shifts in

A series of well dispersed ruthenium nano-clusters using Polyvinylpyrrolidone (PVP) as stabilizer were synthesized by seed-mediated method In this method polymer-stabilized PVP-Ru nano-cluster with a diameter of about 3 14 nm was prepared by the reduction of RuCl3 in ethylene glycol and used as a seed solution (S) which was then added to the EG solution of ruthenium (Ⅲ) salts (E) to

US20030157325A1 US10/080 195 US8019502A US2003157325A1 US 20030157325 A1 US20030157325 A1 US 20030157325A1 US 8019502 A US8019502 A US 8019502A US 2003157325 A1 US2003157325 A1 US 2003157325A1 Authority US United States Prior art keywords substrate process nanoparticles functional molecules assembly Prior art date 2002-02-20 Legal status (The

Playing the platinum card: Monodisperse Pt nanoparticles and 3D dendritic Pt nanoclusters (see image) stabilized by cetyltrimethylammonium bromide were synthesized selectively at pH values of ≈7 and ≈1 7 respectively Both Pt species which can be immobilized electrochemically onto glassy carbon electrodes possess excellent catalytic activity toward the reduction of O 2

Size Control of Ruthenium Nano

A series of well dispersed ruthenium nano-clusters using Polyvinylpyrrolidone (PVP) as stabilizer were synthesized by seed-mediated method In this method polymer-stabilized PVP-Ru nano-cluster with a diameter of about 3 14 nm was prepared by the reduction of RuCl3 in ethylene glycol and used as a seed solution (S) which was then added to the EG solution of ruthenium (Ⅲ) salts (E) to

A Platinum nanoparticles modified Au electrode has been successfully fabricated by using an in situ growth method In this method the Platinum nanoparticles could be grown on the Au electrode surface via the one-step immersion into the mixture of H2PtCl6 (analytical grade 1g/L) NaBH4 (analytical grade) and polyvinylpyrrolidone K30 (PVP analytical grade)

Here we report a fast and efficient production route of yttria-stabilized platinum nanoparticles (Pt x YO y) using a conventional microwave oven ORR performance showed a significant improvement and an optimum activity at a 3:1 Pt:Y ratio outperforming that of

A series of narrowly distributed nanoparticles with different sizes of platinum oxide stabilized by polyvinylpyrrolidone (PVP) were synthesized by hydrolytic decomposition of platinum chloride The as-synthesized nanoparticles were characterized by UV–vis TEM and XPS examination

Oct 23 2012Ionic liquid (IL)-stabilized non-spherical gold nanofluids have been synthesized by a one-step method in aqueous solution The whole reaction proceeded in room temperature In the presence of amino-functionalized ionic liquids gold nanofluids with long-wave surface plasmon resonance (SPR) absorption (600 nm) could be obtained by adopting tannic acid as the reductant

nanoparticles shows that the majority of the nanoparticles are in the narrow range of 1 5 to 2 0 nm in diameter with an average of 1 95 0 43 nm as depicted in the lower inset The successful incorporation of the EPBAPE ligands onto the platinum nanoparticle surface was further manifested in FTIR measurements Figure 2 depicts the FTIR

Jun 15 2014Abstract: Using Nd:YAG laser we studied to produce platinum nanoparticles (PtNPs) in solution of polyvinyl pyrrolidone (C6H9NO)n (PVP) by laser ablation method The influence of average laser power laser irradiation time laser wave length and concentration of PVP solution in water on morphology size distribution of PtNPs was investigated