Capacitance and surface conductance study of the adsorption of pentan-1-ol on gold

✍ Scribed by R.I. Tucceri; D. Posadas

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 459 KB
• Volume: 32
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(87)87003-2

✦ Synopsis

The adsorption of pentan-l-01 on thin gold film electrodes was studied by capacitance and surface conductance, The pentan-l-01 adsorption conforms to the Frumkin isotherm. The free energy of adsorption at the potential of maximum adsorption shows that the adsorption of pentan-l-01 is weaker on gold than on mercury and very similar to that of the diethyl ether on (110) gold single crystals. The surface resistivity in the presence of the alcohol is lower than that of the base electrolyte, showing a minimum near the minimum of capacitance. The changes of resistance are tentatively explained io terms of the field effect and the scattering of surface electrons produced by the solvent molecules.