Abstract

Rajeswari Balakrishnan¹ and Santhi Radhakrishnan^2*

DOI : http://dx.doi.org/10.13005/ojc/360417

Conducting polymers were synthesized by doping polyaniline chloride with Schiff bases such as (E)-2-((4s-chlorobenzylidene)amino) -3- (3a,7a-dihydro-1H-indol-3-yl)propanoic acid (TP4ClB) and (E)-3-(3a,7a-dihydro-1H-indol-3-yl)-2-((2-hydroxy-3,5-diiodobenzylidene)amino) propanoic acid (TPDISA). A chemical oxidation method using potassium persulphate as an oxidising agent was followed for the preparation of polymers. The prepared polymers were characterized by UV-Visible, FTIR and proton H¹NMR spectroscopic techniques. The adsorption characteristics of Polymeric composites for the removal of mercuric ion was studied through batch process. Sorption isotherms were constructed using Langmuir, Freundlich, Dubinin Radush Kevich, Temkin and Redlich Peterson models. SEM micrograph, PXRD and EDX spectra were also recorded to confirm the metal ion adsorption on the surface of investigated composites.

Adsorption; Polymeric Composite; Mercuric Chloride; Tryptophan; Schiffbases

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