Preparation and properties of silica gel with immobilized formazan group


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Abstract

A new sorption material, silica gel with covalently immobilized formazan group, was suggested and characterized. The material was prepared by coupling the immobilized aryldiazonium salt with benzaldehyde phenylhydrazone. The equilibrium and kinetic characteristics of the sorption of Cu(II), Co(II), Ni(II), and Cd(II) from solutions onto the modified silica gel were determined. The material proved to efficiently concentrate Cu(II) from multicomponent solutions. The coordination surrounding of Cu(II) in the complex on the sorbent surface was determined by ESR.

About the authors

Dzh. N. Konshina

Kuban State University

Email: organotin@mail.ru
Russian Federation, ul. Stavropol’slaya 149, Krasnodar, 350040

A. V. Danilova

Kuban State University

Email: organotin@mail.ru
Russian Federation, ul. Stavropol’slaya 149, Krasnodar, 350040

Z. A. Temerdashev

Kuban State University

Email: organotin@mail.ru
Russian Federation, ul. Stavropol’slaya 149, Krasnodar, 350040

S. N. Bolotin

Kuban State University

Email: organotin@mail.ru
Russian Federation, ul. Stavropol’slaya 149, Krasnodar, 350040

A. A. Gurinov

Center for Magnetic Resonance

Email: organotin@mail.ru
Russian Federation, Universitetskii pr. 26, St. Petersburg, 198504

V. V. Konshin

Kuban State University

Author for correspondence.
Email: organotin@mail.ru
Russian Federation, ul. Stavropol’slaya 149, Krasnodar, 350040

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