Preparation of counterion stabilized concentrated silver sols

LaPlante, Sylas; Halaciuga, Ionel; Goia, Dan V.

doi:10.1016/j.jcis.2011.03.080

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…From our experimental results, it is speculated that carboxylate anions would play an important role in both stages of nanoparticle formation since the appearance of the PdNPs was quite different in the TEM images when using different Pd precursors. The phenomenon of this kind of counterion effect is less known in the literature and therefore needs to be carefully examined . The reduction rate of the metal ions, which is related to the redox potential of the metal precursors, would be a key factor for the process to be thermodynamically or kinetically controlled.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and application of palladium stearates as precursors for the preparation of palladium nanoparticles

Yen

Wei

Lin

et al. 2012

Applied Organom Chemis

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This report successfully demonstrates the synthesis and application of palladium stearates. It was found that the branching of the carboxylate anion of metal precursors could influence the size and shape of palladium nanoparticles (PdNPs). Worm-like nanowires were formed when using the branched isomer palladium isostearate (PdISt 2 ), while triangular nanoparticles were produced in a majority when using the normal form: palladium stearate (PdSt 2 ). Furthermore, when applying CO 2 to the system, both types of PdNPs transformed into more spherical shapes with smaller sizes. The formation of carbamates from the amine stabilizer with CO 2 could prevent the further growth and aggregation of PdNPs. The PdNPs were tested as catalysts for the hydrogenation of styrene, and higher catalytic activities were achieved with PdNPs that were prepared with the assistance of CO 2 .

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Section: Resultsmentioning

confidence: 99%

Synthesis and application of palladium stearates as precursors for the preparation of palladium nanoparticles

Yen

Wei

Lin

et al. 2012

Applied Organom Chemis

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“…Controlled synthesis of nanoparticles of narrow size distribution and well-defined structure has been of central importance in the field of colloid science. [1][2][3][4][5][6][7] Specifically, nanoparticles have found numerous novel application, for instance, in fuel-cell catalysts, 8,9 microelectronics, 1,3 solar panels, 10,11 as well as in biotechnology. [12][13][14] At the nanoscale, the field has faced new challenges in both experimentally probing and theoretically explaining size and shape selection mechanisms, which can be different from those at the micron scale.…”

Section: Introductionmentioning

confidence: 99%

Growth of highly crystalline nickel particles by diffusional capture of atoms

Sevonkaev

Privman

Goia

2013

The Journal of Chemical Physics

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We report a new approach to achieve growth of highly crystalline nickel nanoparticles over an extended range of sizes (up to 100 nm in diameter) and time scales (up to several hours) by diffusional transport of constituent atoms. The experimental procedure presented offers control of the morphology of the resulting particles and yields base metal nanocrystals suitable for epitaxial deposition of noble metal shells and the preparation of materials with improved catalytic properties. The reported precipitation system also provides a good model for testing a diffusion-driven growth mechanism developed specifically for the reduction process described.

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