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- W2008998082 abstract "The study of adsorption/desorption processes of 1-hydroxy-ethanol-1,1-diphosphonic acid (HEDP) molecules, and the mixture of HEDP/zinc ion on gold surface has been investigated in neutral perchlorate solution using cyclic voltammetry and electrochemical scanning tunnelling microscopy (EC-STM). Cyclic voltammetry measurements showed that HEDP molecule has an effect on the anodic oxidation of gold. The reversible adsorption/desorption peak in presence of zinc cations is attributed to the effect of zinc ions on the adsorption of HEDP. Results of in situ EC-STM studies on the initial stages of HEDP adsorption on gold single crystal (111) are presented and compared with the adsorption of the mixture of HEDP/zinc ion. The morphology of the gold (111) surface changed during repeated cycles. Sub-mono-layer islands are formed in presence of HEDP molecules. The surface morphology changed significantly in presence of both HEDP and zinc in the solution. After repeated cycles the whole gold surface was covered with a network-type layer. This adsorbed layer varied in function of the gold (111) potential. The results were analysed and discussed. Mittels in situ STM untersuchtes dynamisches Verhalten der Inhibitoradsorption auf Gold (111) Oberflächen Die Adsorption/Desorption Prozesse der 1-Hydroxyethan-1,1-Diphosphonosäure (HEDP) und einer Mischung von HEDP und Zink wurden in neutraler Perchlorat-Lösung auf einer Goldoberfläche untersucht, wobei zyklische Voltammetrie und elektrochemische Rastertunnelmikroskopie eingesetzt wurden. Nach den zyklischen voltrammetrischen Untersuchungen beeinflusst HEDP die anodische Oxidation von Gold. In situ elektrochemische rastertunnelmikroskopische Untersuchungen vom Anfangstadium der HEDP Adsorption auf den Gold (111) Oberflächen werden vorgestellt und mit der Adsorption der Mischung HEDP und Zink verglichen. Die Morphologie der Gold (111) Oberfläche verändert sich während der Zyklen. In Anwesenheit von HEDP Molekülen sind Inseln aus Sub-Monoschichten entstanden. Die Oberflächenmorphologie hat sich in der Gegenwart von HEDP und Zink merklich verändert. Nach wiederholten Zyklen war die ganze Gold-Oberfläche mit einer Netzwerkschicht bedeckt. Die adsorbierte Schicht verändert sich in Abhängigkeit von den Gold (111) Oberflächenpotentialen. Die Ergebnisse werden analysiert und diskutiert." @default.
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- W2008998082 date "2002-09-01" @default.
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- W2008998082 title "Dynamic behaviour of the inhibitor adsorption on gold (111) studied by in situ STM" @default.
- W2008998082 doi "https://doi.org/10.1002/1521-4176(200209)53:9<631::aid-maco631>3.0.co;2-c" @default.
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