Radiotracer study of the adsorption of sulfate ions at a Bi2O3 powder/electrolyte solution interface

Autor:	G. Horányi
Rok vydání:	2003
Předmět:	Chemistry Supporting electrolyte Inorganic chemistry Oxide Protonation Electrolyte Condensed Matter Physics Electrochemistry Redox chemistry.chemical_compound Perchlorate Adsorption General Materials Science Electrical and Electronic Engineering
Zdroj:	Journal of Solid State Electrochemistry. 7:309-312
ISSN:	1432-8488
DOI:	10.1007/s10008-002-0349-5
Popis:	The pH and concentration dependence of the adsorption of sulfate ions on powdered Bi2O3 was studied by a radiotracer technique in the presence of a large excess of perchlorate supporting electrolyte. It was found that, similar to other oxides such as Al2O3, Cr2O3 and Fe2O3, the extent of adsorption is determined by the protonation of the Bi2O3 surface. The redox transformations of Bi adatom layers are discussed in the light of the results obtained. It is established that for the interpretation of the redox processes occurring at the Bi/electrolyte interface the role of protonation of the oxide formed and the anion adsorption induced by the oxide layer should be taken into consideration.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::44306ee63a5bec32d87279e58031b436 https://doi.org/10.1007/s10008-002-0349-5 Zobrazit plný text záznamu Full text from SpringerLink