Abstract
Comparative data on the effect morphological features of core CdS films chemically precipitated from citrate, ethylenediamine, and citrate–ammonia reaction systems have on the intensity of heterogenic ion-exchange substitution when they come into contact with an aqueous lead salt solution are given. The key role of the initial adsorption stage in this process is revealed. Based on an analysis of the kinetic curves of lead accumulation in the initial film surface, it is shown that CdS layers that are obtained from a citrate–ammonia system and have the maximum specific surface (154.4 ± 0.2 m2/g) yield higher values (0.020 s–1) of kinetic constant W1 of the ion-exchange substitution rate.
Original language | English |
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Pages (from-to) | 1539-1547 |
Number of pages | 9 |
Journal | Russian Journal of Physical Chemistry A |
Volume | 91 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1 Aug 2017 |
Externally published | Yes |
Keywords
- adsorption
- cadmium sulfide
- heterogenic ion exchange
- hydrochemical synthesis
- ion-exchange substitution
- lead sulfide
- morphology of films
- solid solutions
- thin films