Suresh Valiyaveettil | National University of Singapore (original) (raw)

Suresh Valiyaveettil

Experienced researcher in Material Science, more than 20 years of R

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Papers by Suresh Valiyaveettil

ACS Sustainable Chemistry & Engineering, Apr 11, 2017

RSC Advances, 2012

ABSTRACT Heavy metal ions and dissolved organic compounds in waste water are known to adversely a... more ABSTRACT Heavy metal ions and dissolved organic compounds in waste water are known to adversely affect human health, aquatic life and the overall ecosystem. Many hazardous pollutants need to be removed from drinking water; however, such technologies are not accessible for economically disadvantaged people around the world. Naturally abundant tomato peels or other biomembranes are used as an efficient biomaterial to remove toxic metal ions and organic pollutants from aqueous solution. The functional groups and morphologies of the tomato peels were characterized using FT-IR and FESEM, respectively. Factors such as pH, nature and amount of adsorbent used for extraction were studied to establish the optimum conditions. The maximum adsorption capacity was observed at different pH values for different pollutants. The equilibrium adsorption data were interpreted by using Freundlich and Langmuir isotherms and the adsorption mechanism was investigated by kinetic studies. Results showed that tomato peels have good potential as an efficient adsorbent to remove various pollutants from water.

Dyes and Pigments, Nov 1, 2016

RSC Advances, 2016

The self-assembly of photochromic dithienylethene molecules into circular nanostructures is repor... more The self-assembly of photochromic dithienylethene molecules into circular nanostructures is reported. The formation of nanostructures is dependent on factors such as photoisomerization, solvent, and hydrogen bonding.

Tetrahedron Letters, Feb 1, 2006

Journal of Supramolecular Chemistry, 2002

A neutral urea incorporated anion receptor 1 with a tripodal pseudocavity was synthesized in good... more A neutral urea incorporated anion receptor 1 with a tripodal pseudocavity was synthesized in good yield. The influence of preorganization and rigidity of the receptors towards anion recognition was evaluated using rigid (1) and flexible (2) receptors. Binding affinities were investigated using 1H NMR and luminescence titration methods. Receptor 1 showed high binding affinities with 1:1 stoichiometry for carboxylate anions

New Journal of Chemistry, 2001

... Rong Liu, Kum-Fun Mok and Suresh Valiyaveettil*. Department of Chemistry, National Uni ersity... more ... Rong Liu, Kum-Fun Mok and Suresh Valiyaveettil*. Department of Chemistry, National Uni ersity of Singapore, 3 Science Dri e 3, Singapore, 117 543. ... This journal is © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2001.