Kinetics and mechanism of dye adsorption on WO3 nanoparticles

Adhikari, Sangeeta and Mandal, Sandip and Sarkar, Debasish and Kim, Do-Heyoung and Madras, Giridhar (2017) Kinetics and mechanism of dye adsorption on WO3 nanoparticles. In: APPLIED SURFACE SCIENCE, 420 . pp. 472-482.

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Abstract

Monoclinic WO3 nanoparticles were synthesized by a simple acid catalyzed co-precipitation reaction. Spherical particles with average size similar to 55 nm were confirmed from electron microscopy followed by functional, structural and optical characterizations. The adsorption of methylene blue was examined by using WO3 nanoparticles and the capacity was higher than most of the reported studies. The effect of pH and material loading on adsorption was determined. The mechanism of adsorption was examined by XPS and a detailed explanation of surface phenomena was proposed. Regeneration study was carried and a high stability of heat treated WO3 towards adsorption of methylene blue was observed. (C) 2017 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	APPLIED SURFACE SCIENCE
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	16 Sep 2017 05:48
Last Modified:	16 Sep 2017 05:48
URI:	http://eprints.iisc.ac.in/id/eprint/57781

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