INFRARED STUDY OF 2-MERCAPTABENZOTHIAZOLE AND 2 OF ITS DERIVATIVES ADSORBED ON PBS

An infrared study has been carried out on 2-mercaptobenzothiazole and two of its derivatives (6-methyl-2-mercaptobenzothiazole and 6-methoxy -2-mercaptobenzothiazole) adsorbed on the PbS (galena) surface from aq ueous solution. Different molecular structures were tested in order to observe the influence of the ring substituents on the surface interac tion. The Pb bulk complexes of the studied molecules and the PbS surfa ce treated in their aqueous solutions have been compared. The differen ce in adsorption on PbS was studied by varying the concentration of th e reagents. (C) 1997 Elsevier Science B.V.