The Effect of Electrochemical Modification of Activated Carbons by Polypyrrole on Their Structure Characteristics, Composition of Surface Compounds, and Adsorption Properties
- Authors: Volfkovich Y.M.1, Goroncharovskaya I.V.2, Evseev A.K.2, Sosenkin V.E.1, Goldin M.M.2
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Affiliations:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Sklifosovsky Research Institute for Emergency Medicine
- Issue: Vol 53, No 12 (2017)
- Pages: 1334-1344
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/189151
- DOI: https://doi.org/10.1134/S1023193517120126
- ID: 189151
Cite item
Abstract
The electrochemical modification of activated carbons (AC) by a conducting polymer polypyrrole (PPy) has a substantial effect on the AC structure characteristics, electrochemical properties, and adsorption activity with respect to natural substances (by the example of free hemoglobin). Using the method of standard contact porosimetry (SCP), the porous structure and hydrophilic–hydrophobic properties are studied for the activated carbon SKT-6A, the [SKT-6A/PPy/Cl–] composite, and individual polypyrrole. The chemistry of the activated carbon surface is studied by the standardized Boehm method. It is shown that the nature of activated carbon and its initial surface substantially affect the character of its interaction with the conducting polymer polypyrrole. The effect of such modification on the AC surface chemistry should be considered in aggregate by taking into account each component of such modification. The increase in the sorption ability of [AC/PPy/Cl–] composites with respect to hemoglobin is largely associated with the stronger hydrophilicity of polypyrrole as compared with activated carbons.
About the authors
Yu. M. Volfkovich
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: markmgold@gmail.com
Russian Federation, Moscow, 119071
I. V. Goroncharovskaya
Sklifosovsky Research Institute for Emergency Medicine
Email: markmgold@gmail.com
Russian Federation, Moscow, 129090
A. K. Evseev
Sklifosovsky Research Institute for Emergency Medicine
Email: markmgold@gmail.com
Russian Federation, Moscow, 129090
V. E. Sosenkin
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: markmgold@gmail.com
Russian Federation, Moscow, 119071
M. M. Goldin
Sklifosovsky Research Institute for Emergency Medicine
Author for correspondence.
Email: markmgold@gmail.com
Russian Federation, Moscow, 129090