Rapid Synthesis of Ultrahigh Adsorption Capacity Zirconia by a Solution Combustion Technique

Deshpande, Parag A and Polisetti, Sneha and Madras, Giridhar (2011) Rapid Synthesis of Ultrahigh Adsorption Capacity Zirconia by a Solution Combustion Technique. In: Langmuir, 27 (7). pp. 3578-3587.

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Abstract

Tetragonal ZrO2 was synthesized by the solution combustion technique using glycine as the fuel. The compound was characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, infrared spectroscopy, and BET surface area analysis. The ability of this compound to adsorb dyes was investigated, and the compound had a higher adsorption capacity than commercially activated carbon. Infrared spectroscopic observations were used to determine the various interactions and the groups responsible for the adsorption activity of the compound. The effects of the initial concentration of the dye, temperature, adsorbent concentration, and pH of the solution were studied. The kinetics of adsorption was described as a first-order process, and the relative magnitudes of internal and external mass transfer processes were determined. The equilibrium adsorption was also determined and modeled by a composite Langmuir-Freundlich isotherm.

Item Type:	Journal Article
Publication:	Langmuir
Publisher:	American Chemical Society
Additional Information:	Copyright of this article belongs to American Chemical Society.
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	06 May 2011 05:14
Last Modified:	06 May 2011 05:14
URI:	http://eprints.iisc.ac.in/id/eprint/37378

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