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Electrochemical Evaluation of Protective Properties of One-component SiO2 and TiO2 Coatings Obtained by the Sol-gel Method
E. Szałkowska1, J. Masalski2, J. Głuszek2
1Department of Chemistry, Częstochowa University of Technology, Częstochowa, Poland
2Institute of Inorganic Technology and Mineral Fertilizers, Wrocław University of Technology, Wrocław, Poland
CeMn/AlSiO Ceramic Layers on Metallic Supports for High-temperature Catalytic Processes
W. Tylus
Institute of Inorganic Technology and Mineral Fertilizers, Wrocław University of Technology, Wrocław, Poland
The Effect of Sequence of Sol-gel Multilayer Coatings Deposition on Corrosion Behaviour of Stainless Steel 316L
J.G. Chęcmanowski, J. Głuszek, J. Masalski
Institute of Inorganic Technology and Mineral Fertilizers, Wrocław University of Technology, Wrocław, Poland
Behaviour of Glucose Oxidase During Formation and Ageing of Silica Gel Studied by Fluorescence Spectroscopy
M. Przybyt
Institute of General Food Chemistry, Department of Biochemistry and Food Science, Technical University of Łódź, Łodź, Poland
Potentiometric Tungsten Electrodes with Enzymes Immobilised by the Sol-gel Technique
M. Przybyt
Institute of General Food Chemistry, Department of Biochemistry and Food Science, Technical University of Łódź, Łódź, Poland
Abstract
The application of sol-gel transitions in development of potentiometric enzyme electrodes with urease, glucose oxidase and tyrosinase is described. Urease and glucose oxidase electrodes showed features of typical potentiometric electrodes with the response modified by the change of pH. The slopes of calibration curves in semilogarithmic coordinates were lower than the Nernstian values and the dynamic ranges were narrow for both electrodes. The tyrosinase electrode shows response to mono- and o-di- phenols. The response of this electrode is not connected with the pH changes. The mechanism of the response of the tyrosinase electrode is discussed; it is proposed that the potential changes reflect the redox state of the enzyme. The electrode responds to reactant concentration (phenol, catechol and some others) even at concentrations 2x10-6 M. Such a high sensitivity makes the electrode a promising candidate for application in detecting traces of phenols.
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Download article (PDF)Application of The Sol-gel Method to the Synthesis of Ferroelectric Nanopowders (Pb1-xLax)(Zr0.65Ti0.35)1-0.25xO3, 0.06=< x =<0.1
M. Płońska, D. Czekaj, Z. Surowiak
University of Silesia, Faculty of Engineering, Department of Materials Science, Sosnowiec, Poland
Application of the Sol-gel Method to Deposition of Thin Films
A. Zarycka, J. Ilczuk, D. Czekaj
University of Silesia, Faculty of Engineering, Department of Materials Science, Sosnowiec, Poland
Crystallization of TiC and TiN from a Colloidal System
A. Biedunkiewicz
Institute of Materials Engineering, Technical University of Szczecin, Szczecin, Poland
Silicate Solvated by an Organic Solvent as Electrolyte or Electrode Material
M. Opallo
Institute of Physical Chemistry, Polish Academy of Sciences, Warszawa, Poland
Synthesis of Nanosilica by the Sol-gel Method and Its Activity Toward Polymers
J. Chruściel, L. Ślusarski
Institute of Polymers, Technical University of Łódz, Łódz, Poland
Microstructure and Optical Properties of Methylmethacrylate-modified Silica Hybrid Glasses and Thin Films
M. Nocuń1, E. Leja2, W. Bugajski1
1AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Kraków, Poland
2AGH University of Science and Technology, Faculty of Electrical Engineering, Automatics, Computer Science and Electronics, Kraków, Poland
Rheology of Silica Suspensions Stabilized by Ethylenediamine
V.E. Gaishun1, Y.A. Potapenok1, O.I. Tulenkowa1, S.V. Pakhovtchyshin2, W. Stręk3
1Francisk Skorina Gomel State University, Gomel, Belarus
2Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
3Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
EPR Studies of Defects in Pure Sol-gel Matrices and Their Influence on Cytotoxicity of the Material
A. Ulatowska-Jarża1, M. Komorowska2, H. Podbielska2
1Bio-Optics Group, Institute of Physics, Wrocław University of Technology, Wrocław, Poland
2Biophysics Group, Institute of Physics, Wrocław University of Technology, Wrocław, Poland
Silica Gel Glasses After Laser Irradiation
S.V. Shalupaev, A.V. Semchenko, Y.V. Nikityuk
Gomel State University, Gomel, Belarus
