Oxygen adsorption on gold in potassium hydroxide solution

  • Tatyana G. Krashchenko engineer, Voronezh State University. 394006 Voronezh
  • Elene V. Bobrinskya PhD, lecturer, Voronezh State University. 394006 Voronezh
  • Alexander V. Vvedenskii PhD, professor, Head of Department, Voronezh State University. 394006 Voronezh, e-mail: alvved@chem.vsu.ru
Keywords: voltammetry, adsorption isotherm, gold, hydroxide-ion, IR-spectroscopy

Abstract

The adsorption of oxygen-containing particles from potassium hydroxide solutions weres studied
at polycrystalline gold electrode. Five stable forms of oxygen has been determined as adsorption
− − ads Au OH , ads Au −O&H , ads Au −O&& and phase AuO and Au2O3. Stationary adsorption of
components are described by Temkin’s isotherm. The kinetics follows Roginski-Zeldovich equation.
Adsorption Ox,Red-transformations of oxygen in
Au,O&H | OH −; Au,O&& | OH − and Au OH O, & | &&systems are quasi-equilibrium.

Downloads

Download data is not yet available.

References

1.Hamelin A., Sottomayor M. J., Silva F. et al. Cyclic voltammetric characterization of
oriented monocrystalline gold surfaces in aqueous alkaline solution // J. Electroanal. Chem.
1990. V.295. P.291-300.
2.Chen A., Lipkowski J. Electrochemical and spectroscopic studies of hydroxide
adsorption at the Au(111) electrode. J. Phys. Chem. B. 1999. V.103. P.682-691.
3.Strbac S., Adzic R.R. The influence of OH- chemisorption on the catalytic properties
of gold single crystal surfaces for oxygen reduction in alkaline solutions // J. Electroanal.
Chem. 1996. V.403. P.169-181.
4.Введенский A.В. Морозова Н.Б. Адсорбция и электроокисление OH- на золоте
и сплавах Ag-Au, Cu-Au // Конденсированные среды и межфазные границы. 2006.
Т.8. С.190-203.
5.Angerstein-Kozlowska H., Conway B.E. et al. Elementary steps of electrochemical
oxidation of single-crystal planes of Au. Part II: A chemical and structural basis of
oxidation of the (111) plane // Electrochim. Acta. 1986. V.31, №8. P.1051-1061.
6.Strbac S., Adzic R.R. The influence of pH on reaction pathways for O2 reduction on
the Au (111) face // Electrochim. Acta. 1996. V.41, №18. P.2903-2908.
7.Burke L.D., McRann M. Thick oxide growth on gold in base // J. Electroanal. Chem.
1981. V.125. P.387-399.
8.Angerstein-Kozlowska H., Conway B.E. et al. Electrocatalytic mediation of
oxidation of H2 at gold by chemisorbed states of anions // J. Electroanal. Chem. 1990. V.
277. P. 233-252.
9.Gordon J.S., Jonson D.C. Application of an electrochemical quartz crystal
microbalance to a study of water adsorption at gold surfaces in acidic media // J.
Electroanal. Chem. 1994. V. 365. P.267-274.
10. Sun S.-G., Chen A. Effects of ethylene glycol (EG) concentration and pH of
solutions on electrocatalytic properties of Pt(111) electrode in EG oxidation—A
comparison study with adjacent planes of platinum single crystal situated in [1 0] and
[01 ] crystallographic zones// Electrochim. Acta. 1994. V.39, №7. P. 969-973.
11. Бобринская Е.В., Введенский А.В., Кращенко Т.Г. Вольтамперометрия Ox,
Red-реакции с использованием общего вида изотерм соадсорбции Ox- и Red-форм //
Конденсированные среды и межфазные границы. 2011. Т.13, №3, С.247-254.
12. Бобринская Е.В., Введенский А.В., Кращенко Т.Г. Линейная
вольтамперометрия Red-Ox процесса с соадсорбцией реагентов // Физикохимия
поверхностей и защита материалов. 2012. Т.48, №3, С.376-382.
13. Bard A.J., Faulkner L.R. Electrochemical methods: fundamentals and applications
// Wiley, N.-Y., 1980.
14. Сафронов А.Ю., Кристенсен П.А. ИК-спектроскопические характеристики
поверхности золотого электрода в растворах с различным рН // Электрохимия. 1990.
Т.26, 7, с.869-873.
15. Habib M.A., Bockris J. O`M. FT-IR spectrometry for the solid/solution interface //
J. Electroanalyt. Chem. 1984. V.188. P.287-306.
16. Дамаскин Б.Б. Электродные процессы в растворах органических соединений.
М. : МГУ, 1985. 112 с.
Published
2019-11-22
How to Cite
Krashchenko, T. G., Bobrinskya, E. V., & Vvedenskii, A. V. (2019). Oxygen adsorption on gold in potassium hydroxide solution. Sorbtsionnye I Khromatograficheskie Protsessy, 13(6). Retrieved from https://journals.vsu.ru/sorpchrom/article/view/1722