engleski

Interactions in multicomponent systems containing surfactants. System silver iodide — methylene blue and sodium dodecyl sulphate

The precipitation and dissolution of AgI in the presence of methylene blue (MB.Cl) and sodium dodecyl sulphate (NaDS) was followed by X-ray diffraction analysis. At high MB.Cl concentration, the absence if AgI was observed, which is explained by redox process. The decrease in I- concentration causes dissolution or inhibition of growth of solid AgI which is significant at relatively high MB.Cl concentrations. The addition of NaDS causes the disappearance of these effects, which is explained by the incorporation of MB in the NaDS micelles. These explanations are supported by the potentiometric measurements using Ag/Ag2S and Pt electrodes.

precipitation of AgI in the presence of MB.Cl and NaDS ; X-ray diffratcion ; phase analysis ; crystallite size

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