Specific adsorption of carbonate ions at the hematite/aqueous electrolite solution interface
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Maria Curie- Skłodowska University
Publication date: 2011-01-01
Corresponding author
Władysław Janusz
Department of Radiochemistry and Colloid Chemistry, Maria Curie- Skłodowska University, Pl. M.C. Skłodowskiej 3, 20-031 Lublin, Poland
Physicochem. Probl. Miner. Process. 2011;46(1):65-72
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ABSTRACT
A study on adsorption of carbonate ions at the α-Fe2O3/aqueous solution of NaClO4 interface is presented. The concentration range of carbonate ions was from 1.00·10-6 to 1.00·10-3 M. The shape of carbonate ion adsorption plot vs. pH is characteristic for anions adsorption onto metal oxides and is called “adsorption envelope”. To prevent carbon dioxide access to the solution, all measurements were conducted in a special chamber in nitrogen atmosphere.