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5-[4-(2-Hydroxy-ethanesulfonyl)-phenylazo]-quinolin-8- ol - polysiloxane hybrid materials for extraction and removal of Fe3+ ions from aqueous solutions

V. RADITOIU1,* , A. RADITOIU1, L.E. WAGNER1, M.F. RADULY1, C.A. NICOLAE1, R.C. FIERASCU1

Affiliation

  1. National Research and Development Institute for Chemistry and Petrochemistry – ICECHIM, Splaiul Independentei no. 202, 6-th district, 060021, Bucharest, Romania

Abstract

The paper presents new types of organic-inorganic hybrid materials obtained from an azo dye bearing chelating groups and triethoxysilane residues and tetraethoxysilane derivatives frequently used in sol-gel processes. Hybrid materials obtained were studied in processes involving extraction and removal of Fe3+ ions from aqueous solutions at different pH values. The organic chromogen with alkoxysilane residues and hybrid materials before and after complexation with Fe3+ ions were characterized by XRF spectrometry, FT-IR spectrometry, UV-VIS reflexion spectra, color measurements in CIELAB system and thermal analysis..

Keywords

Hybrid materials, Silica, Dye, Extraction, Chelating groups.

Submitted at: Oct. 25, 2010
Accepted at: Feb. 17, 2011

Citation

V. RADITOIU, A. RADITOIU, L.E. WAGNER, M.F. RADULY, C.A. NICOLAE, R.C. FIERASCU, 5-[4-(2-Hydroxy-ethanesulfonyl)-phenylazo]-quinolin-8- ol - polysiloxane hybrid materials for extraction and removal of Fe3+ ions from aqueous solutions, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 2, pp. 151-157 (2011)