An in situ ATR-FTIR study of the adsorption kinetics of xanthate on germanium

作者：Fredriksson Andreas^*; Holmgren Allan

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2007, 302(1-3): 96-101.

DOI：10.1016/j.colsurfa.2007.02.005

• in situ adsorption
• kinetics
• ATR-FTIR
• XPS
• germanium
• xanthate

The in situ adsorption of n-heptyl xanthate on a germanium multiple internal reflection element was studied at constant ionic strength and X-ray photoelectron spectroscopy was used in the investigation of the germanium surface. The kinetics of heptyl xanthate adsorption was evaluated using the integrated absorbance of a sub-band under the vibration at 1200 cm(-1). This vibration was assigned to the adsorbed xanthate molecule. It was shown that the adsorption of heptyl xanthate can be represented by a pseudo-first-order rate law and a monodentate binding of the xanthate to the germanium surface is proposed. During the adsorption of xanthate, the dimeric form of xanthate was simultaneously formed.

• 出版日期2007-7-20