Ion Exchange of Silver(I) on Thin PbS Films as Influenced by Diffusion

Умарова, Н Н; Movchan, N. I.; Yusupov, R. A.; Королев, Э. А.; Морозов, В. П.

doi:10.1023/b:rugc.0000007599.96120.ad

Cited by 2 publications

(6 citation statements)

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“…After this, the synthesized thin films were plunged into the solutions (placed in a thermostat), for a known period of time, for the process of ion exchange to take place. The study of the surface morphology and crystallographic structure of PbS thin films before and after ion exchange, was carried out by SEM on REMMA-202M equipment [3,5,6] . As seen, in black color, the degree of sorption of Ag (I) on PbS films depends considerably on the concentration of sorbed ions in solution.…”

Section: Experiments and Discussion E Sorption Of Ag(i) Ions By Pbs Thin Polycrystalline Filmsmentioning

confidence: 99%

“…Equations of the kinetics of ion exchange across a solid-liquid phase contact, with respect to the effect of the thickness of thin films, are presented in [3,5,6] . Since the size of monocrystals being studied is about 30 nm, 99% of conversion time in a crystallite is about 40 days, which is much less than the time of ion transport from the phase boundary to the furthest layers from this boundary.…”

Section: Experiments and Discussion E Sorption Of Ag(i) Ions By Pbs Thin Polycrystalline Filmsmentioning

confidence: 99%

“…In nanocrystals within gel matrices the process of sorption proceeds in two stages. Non-empirical equations of this process are presented in [3][4][5][6][7][8][9][10] . These equations describe the exchange of metal ions in the occurrence of "gel immobilized matrix of a metal sulfideaqueous solution of a metal ion" phase contact.…”

Section: A Description Of the Kinetics Of Ion Exchange In Thin Film And Nanocrystalline Inorganic Materials As A Multistage Processmentioning

confidence: 99%

“…In [3][4][5][6] , the theory of three-stage diffusion of metal ions in thin polycrystalline films at temperature range of 0-100°C was developed. This took into account the occurrence of a solid-liquid phase contact, in the presence of complexing agents and compounds, which are capable of blocking the surface of the polycrystalline thin films.…”

Section: Effect Of Complexing Agents On the Process Of Sorptionmentioning

confidence: 99%

“…). Using the data of solubility constants of sulfides, MS and Ag 2 S, cited in [3,5,6] indicated that energy efficiency of the above-mentioned reaction for these metals consist of: As an example, a mathematical description of the kinetic curves of Zn(II)/Ag(I) ion exchange has been presented in fig. 7.…”

Section: F Sorption Of Ag(i) By Nanocrystals In Gel Matricesmentioning

confidence: 99%

See 4 more Smart Citations

Extraction of Ag(I) ion traces from aqueous solutions using inorganic thin film and nanocrystalline sorbents

Mahmood¹,

Бахтеев²,

Mohaisen³

et al. 2020

ATMPH

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In this paper, we have presented experimental data and the theoretical basis for the extraction of silver ions from aqueous solutions, using metal sulfides (PbS, ZnS, MnS, CuS, FeS) in the form of thin films, nanocrystals in gel matrices, and precipitates. A mathematical model, taking into account the sorption of Ag(I) due to a three-stage ion exchange in the occurence of solid-liquid phase contact, containing complexing entities (Na 2 S 2 O 3 , N 2 H 4 CS, N 3 H 5 CS, NH 3 , EDTA, TEA). This model was applied in the technology of equipment design.

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Section: Experiments and Discussion E Sorption Of Ag(i) Ions By Pbs Thin Polycrystalline Filmsmentioning

confidence: 99%

Section: Experiments and Discussion E Sorption Of Ag(i) Ions By Pbs Thin Polycrystalline Filmsmentioning

confidence: 99%