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Impact of water activity on double layer parameters at the mercury/chlorates(VII) interface in the presence of mixed adsorption layers of 6-mercaptopurine–Triton X-100

Authors
  • Nosal-Wiercińska, Agnieszka1
  • Kaliszczak, Waldemar1
  • Drapsa, Anna1
  • Wiśniewska, Małgorzata2
  • Yilmaz, Selehattin3
  • Yagmur, Sultan4
  • Saglikoglu, Gulsen3
  • 1 Maria Curie-Sklodowska University, Faculty of Chemistry, Department of Analytical Chemistry and Instrumental Analysis, M. Curie-Sklodowska Sq. 3, Lublin, 20-031, Poland , Lublin (Poland)
  • 2 Maria Curie-Sklodowska University, Faculty of Chemistry, Department of Radiochemistry and Colloids Chemistry, M. Curie-Sklodowska Sq. 3, Lublin, 20-031, Poland , Lublin (Poland)
  • 3 Canakkale Onsekiz Mart University, Faculty of Science and Arts, Department of Chemistry, Terzioglu Campus, Canakkale, 17020, Turkey , Canakkale (Turkey)
  • 4 Canakkale Onsekiz Mart University, Lapseki Vocational School, Department of Chemistry and Chemical Processing Technology Programs, Program of Laboratory Technology, Lapseki, Canakkale, Turkey , Lapseki (Turkey)
Type
Published Article
Journal
Adsorption
Publisher
Springer US
Publication Date
Apr 04, 2019
Volume
25
Issue
4
Pages
819–824
Identifiers
DOI: 10.1007/s10450-019-00076-8
Source
Springer Nature
Keywords
License
Green

Abstract

Adsorption mechanism of 6-mercaptopurine, 6-mercaptopurine–Triton X-100 on the mercury electrode surface from 2, 4 and to 6 mol dm−3 chlorates(VII) was studied as the function of adsorbate bulk concentration. The experimental data obtained from the measurements of differential capacity of the double layer were used, namely the measurements of zero charge potential and surface tension at the zero charge potential. In the case of mixed adsorption layer of 6-mercaptopurine–Triton X-100 domination of 6MP in adsorption equilibria formation as well as competitive adsorption between the 6-mercaptopurine–Triton X-100 molecules were found. Significant contribution of water molecules in the adsorption–desorption processes was also observed.

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