NDLI: Specific adsorption of anions preceding the dissolution of CuO in acidic solution

Content Provider	Springer Nature Link
Author	Horányi, G.
Copyright Year	2001
Abstract	The specific adsorption of sulfate and chloride ions on powdered CuO was studied by radiotracer techniques in acidified of 0.5 mol dm–3 NaClO4 supporting electrolyte. It was found that the pH and concentration dependence of the adsorption of labelled sulfates could be determined over a wide pH range (2.0≤pH≤7.0), despite the gradual dissolution of the copper oxide. No specific adsorption was found at pH≥7.0. It was postulated that the specific adsorption was preceded by the protonation of the CuO surface. No reliable relationships were found for labelled chlorides, owing to the relatively high desorption rate of the surface complexes formed in the sorption process. The apparent adsorbability of sulfate ions was significantly higher than that of the chloride ions, as shown by the results of competitive adsorption of the two species. This observation was in agreement with the postulated lower desorption rate of the surface complex formed with sulfates than that of species formed with chlorides.
Starting Page	463
Ending Page	467
Page Count	5
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	6
Issue Number	7
e-ISSN	14330768
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-12-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Electrochemistry Energy Storage Characterization and Evaluation of Materials Analytical Chemistry Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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