Dynamics of Pyridine Adsorption on Gold(111) Terraces in Acid Solution from in-Situ Scanning Tunneling Microscopy under Potentiostatic Control

Content Provider	Semantic Scholar
Author	Andreasen, G. Kjaergaard Vela, María E. Salvarezza, Roberto C. Arvia, Alejandro Jorge
Copyright Year	1997
Abstract	The adsorption of pyridine (Py) on Au(111) terraces produced from aqueous 0.1 M HClO 4 + 10 -3 M Py at 298 K was studied in the potential range 0.15 V E pze , as expected for a reversible potential-step-induced surface process. The surface concentration of adsorbed Py molecules resulting from the (4 x 4) lattice is close to 1 x 10 -9 mol/cm 2 , a figure exceeding the average integral surface concentration value obtained from electroadsorption measurements. Therefore, disordered domains would be related to a mobile diluted Py adsorbate coexisting with ordered Py adsorbate domains leading to a nonhomogeneous Py adsorbate layer at the positively charged Au(111) terraces.
Starting Page	6814
Ending Page	6819
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1021/la970417r
Volume Number	13
Alternate Webpage(s)	http://sedici.unlp.edu.ar/bitstream/handle/10915/85927/Documento_completo.pdf-PDFA.pdf?isAllowed=y&sequence=1
Alternate Webpage(s)	https://doi.org/10.1021/la970417r
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article