"Pure" method for depositing platinum nanoparticles onto the carbon material from a Pt2dba3 solution

Pentsak, Evgeniy O.; Ananikov, Valentine P.

doi:10.1007/s11172-014-0777-2

Cited by 6 publications

(6 citation statements)

References 29 publications

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“…PtNPs@GNF‐1 and PtNPs@GNF‐2 were produced using Pt(acac) 2 and Pt(dba) 3 , using similar experimental procedures to those for PdNPs@GNF‐1 and PdNPs@GNF‐2, respectively (Experimental section). HRTEM imaging of PtNPs@GNF‐1 showed Pt nanoparticles distributed along the step edges of the nanoreactor with an average particle size of 4.21 ± 1.54 nm (Figure c,e), and for PtNPs@GNF‐2 much smaller nanoparticles with an average size of 1.55 ± 0.48 nm located mostly in the interior of the nanoreactor (Figure S3g,h, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Magnetically Recyclable Catalytic Carbon Nanoreactors

Aygün

Chamberlain

Giménez-López

et al. 2018

Adv Funct Materials

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Multifunctional nanoreactors are assembled using hollow graphitized carbon nanofibers (GNFs) combined with nanocatalysts (Pd or Pt) and magnetic nanoparticles. The latter are introduced in the form of carbon-coated cobalt nanomagnets (Co@C n ) adsorbed on GNF, or formed directly on GNF from ferrocene yielding carbon-coated iron nanomagnets (Fe@C n ). High-resolution transmission electron microscopy demonstrates that Co@C n and Fe@C n are attached effectively to the GNFs, and the loading of nanomagnets required for separation of the nanoreactors from the solution with an external magnetic field is determined using UV-vis spectroscopy. Magnetically functionalized GNFs combined with palladium or platinum nanoparticles result in catalytically active magnetically separable nanoreactors. Applied to the reduction of nitrobenzene the multifunctional nanoreactors demonstrate high activity and excellent durability, while their magnetic recovery enables significant improvement in the reuse of the nanocatalyst over five reaction cycles (catalyst loss < 0.5 wt%) as compared to the catalyst recovery by filtration (catalyst loss <10 wt%).

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Section: Resultsmentioning

confidence: 99%

Magnetically Recyclable Catalytic Carbon Nanoreactors

Aygün

Chamberlain

Giménez-López

et al. 2018

Adv Funct Materials

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“…66 The purity of Pt 2dba 3 •CHCl 3 was determined according to a previously described methodology. 67 The amounts of precatalyst were taken with respect to calculated purity. Pt 2 dba 3 •CHCl 3 (2.2 mg) and multiwalled carbon nanotubes (MWCNTs) (255 mg) were added to the flask with 3 mL of solvent (CHCl 3 , THF or toluene).…”

Section: Synthetic Proceduresmentioning

confidence: 99%

Evidence for the “cocktail” nature of platinum-catalyzed alkyne and alkene hydrosilylation reactions

Ondar

Burykina

Ananikov

2022

Catal. Sci. Technol.

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“…Palladium on activated carbon (Pd content: 1%, received from Acros) was used as received. Pd NPs, Pt NPs, and Au NPs supported on carbon materials were prepared according to methods described earlier. ,, Ni/C, Co/C, Fe/C, and Cu/C systems were produced by impregnation of graphite with dissolved metal precursor in acetonitrile and further thermal decomposition. Ni(acac) 2 , Co(acac) 2 , Fe(OAc) 2 , and Cu(acac) 2 were used as precursors of metals (received from Merck, ABCR, Acros Organics, and Sigma-Aldrich, respectively).…”

Section: Methodsmentioning

confidence: 99%

Dynamic Behavior of Metal Nanoparticles in Pd/C and Pt/C Catalytic Systems under Microwave and Conventional Heating

Pentsak

Cherepanova

Ananikov

2017

ACS Appl. Mater. Interfaces

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Metal on carbon catalysts (M/C) are ubiquitously used in modern research and industry to carry out a variety of chemical transformations. Stable metal-support frameworks and inertness of the carbon materials are usually taken for granted in these very useful catalytic systems. Initially, the present study was aimed to increase the efficiency of Pd/C and Pt/C catalytic systems under microwave and conventional heating. Interestingly, a dynamic behavior of the metal nanoparticles was revealed, and a series of carbon support transformations occurred during the thermal treatments of the catalysts. Microwave and thermal heating of the M/C catalysts resulted in substantial transformations of the carbon supports via the formation of pits, trenches, nanofibers, and nanowalls. Detailed studies with field-emission scanning electron microscopy were carried out involving statistical averaging over large surface areas. The effects of the dynamic behaviors of the supported metal particles on the catalytic activities of the synthetically useful Mizoroki-Heck and Suzuki-Miyaura reactions were demonstrated. Revealed dynamic behavior and modification of the carbon support due to microwave treatment were observed in a number of M/C systems (M = Pd, Pt, Ni, Co, Cu, Fe, and Au).

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"Pure" method for depositing platinum nanoparticles onto the carbon material from a Pt2dba3 solution

Cited by 6 publications

References 29 publications

Magnetically Recyclable Catalytic Carbon Nanoreactors

Magnetically Recyclable Catalytic Carbon Nanoreactors

Evidence for the “cocktail” nature of platinum-catalyzed alkyne and alkene hydrosilylation reactions

Dynamic Behavior of Metal Nanoparticles in Pd/C and Pt/C Catalytic Systems under Microwave and Conventional Heating

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