Radiotracer Study of the Specific Adsorption of Anions on Metal Oxides in Acid Media: An Experimental Approach

✍ Scribed by P. Joó; G. Horányi

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 50 KB
• Volume: 223
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1999.6678

✦ Synopsis

The specific adsorption of anions (HSO(4)(-), H(2)PO(4)(-), and Cl(-)) was studied at Fe(2)O(3), ZnO, and CuO surfaces by the radiotracer technique in strongly acidic medium (1 M HClO(4)). A significant specific adsorption of HSO(4)(-) and H(2)PO(4)(-) ions was found in all cases studied while no measurable adsorption of Cl(-) ions was observed. In the cases of ZnO and CuO, the specific adsorption takes place over the course of continuous dissolution of the oxide. Copyright 2000 Academic Press.