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1

Silver sorption on acrylic copolymers functionalized with amines. Equilibrium and kinetic studies

100%

Buhaceanu R., Sarghie I., Barsanescu A., Dulman V., Bunia I.

Open Chemistry

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2009

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vol. 7

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issue 4

827-835

EN

The sorption capacity of three weak base ion exchangers based on acrylic copolymers functionalized with ethylenediamine, triethylenetetramine and N, N- dimethylamino propylamine for Ag(I) ions was evaluated. Adsorption experiments were carried out by batch method. The effect of pH, crosslinking degree of copolymers, amount of sorbent, initial ion concentration, contact time and temperature was studied. The parameters which characterize the retention process were estimated using Langmuir and Freundlich isotherm models, the best fitting being for the first model. Kinetic data were fitted to pseudo-first order, pseudo-second order and intraparticle diffusion models. Experimental data were in good agreement with the pseudo second order. [...]

2

Inactivation of cholinesterases by silver and gold ions in vitro

88%

Vrček I., Šinko G.

Open Chemistry

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2013

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vol. 11

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issue 6

935-944

EN

The main goal of the present study was to investigate the effects of silver and gold ions on cholinesterases (ChEs) activity due to increasing application of these metals in a wide variety of nanomaterials. A chromogenic assay using the substrate o-nitrophenyl acetate/butyrate made it possible to conclude unmistakably that both metals inhibit ChEs. Addition of bovine serum albumin (BSA) indicates that binding of metal ions to albumin could serve to scavenge metals and consequently reduce their amount for reaction with ChEs. The effects of metal ions on ChE should be taken into consideration when using this enzyme as an environmental biomarker. [...]

3

Photo-induced chemical reduction of silver bromide to silver nanoparticles

88%

Król-Gracz A., Michalak E., Nowak P., Dyonizy A.

Open Chemistry

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2011

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vol. 9

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issue 6

982-989

EN

This paper discusses the experimental results of the production of nanocolloidal silver using photoreduction method. Ultrafine crystalline gelatine-stabilised aqueous suspensions of silver bromide were used as a substrate for the synthesis of silver nanoparticles (Ag NPs). The influences of the reductant to substrate molar ratio, the medium’s pH, the type of the source of actinic radiation and the time of exposure to the efficient production of the Ag NPs were studied. A typical reaction was suggested, which involves the photo-induced reduction of silver bromide nanocrystals in the presence of ascorbic acid under specified physicochemical conditions. The properties of resultant silver particles were examined using UV-Vis spectroscopy and Dynamic Light Scattering (DLS). In addition, Transmission Electron Microscopy (TEM) was used for imaging the silver nanoparticle suspensions. [...]

4

Nature of the silver precipitation obtained by cementation from thiosulphate solutions

88%

Kuntyi O., Zozulya G., Saldan I., Kree V., Korniy S., Stel’makhovych B.

Open Chemistry

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2011

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vol. 9

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issue 1

180-184

EN

The morphology and composition of the deposits formed on the surface of magnesium disk during cementation from thiosulphate solutions (0.0025–0.1M) [Ag(S2O3)2]3− + 0.5M S2O3 2− have been studied. A porous deposit with low adhesion is formed on the surface of the magnesium metal substrate. Within a wide range of [Ag(S2O3)2]3− ion concentrations, sulfur as well as silver are constituents of the deposit at the initial stages of cementation and at the end of the reaction. This is attributed to the electrochemical behaviour of magnesium in thiosulphate solutions resulting in the exceeding of current limit on cathode for pure silver reduction. Hence, parallel electrochemical reactions take place that are very close in their values to the standard redox potentials of reduction of [Ag(S2O3)2]3− ions to Ag0 and S2O32− ions to S2−. Sulfur content in the cement deposits increases with the decrease in [Ag(S2O3)2]3− ion concentration and increase in cementation time. This tendency is also observed with the decreasing solution temperature.

5

THERMODYNAMIC PROPERTIES OF Ag-Pt ALLOY MEASURED USING A SOLID ELECTROCHEMICAL METHOD

75%

Santoso I., Taskinen P.

Archives of Metallurgy and Materials

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2018

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vol. 63

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issue 1

6

The Effect of Addition of Germanium to the Surface Phenomena in Silver Alloys

75%

Jesiotr M., Trzaskowski W., Trochimiak D., Nawrocki P., Łukasik K., Myszka D.

Archives of Foundry Engineering

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2018

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issue 3

7

Influence of Different Plants Extracts on Silver Nanoparticles Green Synthesis

75%

Velgosová O., Mražíková A., Veselovský L., Willner J., Fornalczyk A.

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issue 2

8

Metallurgical Slags as Traces of a 15th century Copper Smelter

63%

Kozana J., Piękoś M., Garbacz-Klempka A., Kwak Z., Wardas-Lasoń M.

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issue 2

Refine search results

Silver sorption on acrylic copolymers functionalized with amines. Equilibrium and kinetic studies

Inactivation of cholinesterases by silver and gold ions in vitro

Photo-induced chemical reduction of silver bromide to silver nanoparticles

Nature of the silver precipitation obtained by cementation from thiosulphate solutions

THERMODYNAMIC PROPERTIES OF Ag-Pt ALLOY MEASURED USING A SOLID ELECTROCHEMICAL METHOD

The Effect of Addition of Germanium to the Surface Phenomena in Silver Alloys

Influence of Different Plants Extracts on Silver Nanoparticles Green Synthesis

Metallurgical Slags as Traces of a 15th century Copper Smelter