Synthesis and kinetics of growth of metal nanoparticles inside ion-exchange polymers

Золотухина, Е. В.; Кравченко, Т. А.

doi:10.1016/j.electacta.2010.12.019

Cited by 19 publications

(13 citation statements)

References 25 publications

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“…Also, EDS analyses in the course of SEM experiments, confirmed the presence of significant amounts of AgNPs throughout the membrane (Figure S1, Supporting Information). These results are in agreement with previous findings obtained in the preparation of AgNPs in Nafion membranes, though using other reducing agents . They also suggest that Donnan exclusion does not play an important role in the formation and the spatial distribution of AgNPs in the Nafion matrix.…”

Section: Resultsmentioning

confidence: 99%

“…Utilisation of the AgNPs for the abovementioned practical applications often requires the construction of integrated chemical systems, and in most cases polymer‐supported nanoparticles are employed . Among others, ion exchange membranes proved useful as supports for the fabrication of metal nanoparticles (NPs) . This is due to their unique morphology, having hydrophilic and hydrophobic nanodomains, which in principle allow nanoscale confinement of metallic deposits to be achieved.…”

Section: Introductionmentioning

confidence: 99%

“…Synthesis of silver particles in Nafion, generally, involves loading the membrane matrix with silver ions followed by their chemical reduction. Very often the sizes of the formed NPs are much larger than the size of water clusters . Moreover, the location of the NPs within the matrix can depend on the reducing agents employed.…”

Section: Introductionmentioning

confidence: 99%

“…[7] Amongo thers, ione xchange membranesp roved useful as supports fort he fabrication of metal nanoparticles (NPs). [8][9][10][11][12][13][14][15][16][17][18][19][20][21] Thisi sd ue to their unique morphology,h aving hydrophilic and hydrophobic nanodomains, which in principle allow nanoscale confinemento fm etallicd eposits to be achieved. Nafion is ap oly(perfluorosulfonic) acid membrane,k nown for its cation exchange properties as well as for its thermala nd chemical stability.…”

Section: Introductionmentioning

confidence: 99%

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Scanning Electrochemical Microscopy and Voltammetric Investigation of Silver Nanoparticles Embedded within a Nafion Membrane

2016

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In this paper, silver nanoparticles (AgNPs), incorporated in the poly(perfluorosulfonic) acid membrane Nafion® 117, were fabricated by chemical reduction of the Ag+-loaded membranes, using HCOH in a basic medium as reducing agent. The AgNPs content within the membrane varied in proportion of the concentration of AgNO3 used in the incorporation step of Ag+ in the ion-exchange. Information on size and density of the AgNPs within the matrix was obtained by SEM analysis. The size of the AgNPs varied between 10 and 20 nm, regardless of the AgNO3 concentration used for their preparation, while AgNPs density was the higher, the greater was the AgNO3 concentration in the solution. Information on the oxidation state of Ag in the AgNPs and their distribution and aggregation on the surface of the Nafion membranes were obtained by SECM measurements. The use of [Ir(Cl)6]3- and Ru(NH3)63+ as redox mediators allowed establishing whether the AgNPs were interconnected to create nano-chain networks to provide AgNPs-loaded Nafion membranes with electronic conductivity. Moreover, combination of SECM and anodic stripping voltammetry allowed establishing the reactivity of the AgNPs-Nafion composites in terms of Ag(I) species released at the nanocomposite/solution interface. These aspects are relevant for the potential application of these AgNPs-loaded membranes for antimicrobial protection purposes

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Scanning Electrochemical Microscopy and Voltammetric Investigation of Silver Nanoparticles Embedded within a Nafion Membrane

2016

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“…The equilibrium potential for deposition of nanoscale Ag particles is different from the value for a massive electrode but this effect for particles of several nm in diameter should be of the order of a few tens of mV [69].…”

Section: Silver Depositionmentioning

confidence: 99%

A new strategy towards electroactive polymer–inorganic nanostructure composites. Silver nanoparticles inside polypyrrole matrix with pendant titanocene dichloride complexes

Воротынцев

Skompska

Rajchowska

et al. 2011

Journal of Electroanalytical Chemistry

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Anomalous effect of Cu2O and CuO deposit on the porosity of a macroreticular anion exchanger

et al. 2021

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When synthesizing copper compounds containing polymeric adsorbents, it was found that the two copper oxides, Cu2O and CuO, deposited in the skeleton of a strongly basic macroreticular anion exchanger (An) radically diminished the porosity of the obtained composites in relation to the host material. In order to investigate this phenomenon more closely, An/Cu2O and An/CuO (both based on the commercial anion exchanger Amberlite IRA900Cl), containing 8.6 and 8.2 wt% Cu, respectively, were subjected to scrutiny. The porous characteristics of the thermally dried and freeze-dried samples were determined using the N2 adsorption–desorption method and mercury intrusion porosimetry. The thermally dried samples lost their porosity and increased their bulk density in relation to the pure resin indicated a significant reduction in their volume. It was found that during drying, the grains shrank as much as the pores collapsed. The decay of the porous structure resulted from the surface morphology of the Cu2O and CuO particles and their tendency to agglomerate. Both freeze-dried samples retained the porous characteristics typical for macroporous anion exchangers. In contrast to the most popular hybrid ion exchangers containing hydrated polyvalent metal oxides (such FeOOH), An/Cu2O and An/CuO showed markedly strong volume contraction effect in relation to moisture content. Graphical abstract

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Synthesis and kinetics of growth of metal nanoparticles inside ion-exchange polymers

Cited by 19 publications

References 25 publications

Scanning Electrochemical Microscopy and Voltammetric Investigation of Silver Nanoparticles Embedded within a Nafion Membrane

Scanning Electrochemical Microscopy and Voltammetric Investigation of Silver Nanoparticles Embedded within a Nafion Membrane

A new strategy towards electroactive polymer–inorganic nanostructure composites. Silver nanoparticles inside polypyrrole matrix with pendant titanocene dichloride complexes

Anomalous effect of Cu2O and CuO deposit on the porosity of a macroreticular anion exchanger

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