Abstract
The effects of Dimethyl Glyoxan (DMG) loaded chitosan-nano film (NFCh) chemical sensor for detection Ni+2 ions in aqueous solution were studied. The films, prepared by solvent casting technique with the following compositions of the casting solutions in DMG, chitosan, STPP. The DMG was successfully loaded into NFCh as confirmed by UV–Vis spectrophotometry. Interaction of NFCh with nickel ions provides obvious colorimetric change from red to violet, enabling easy detect with the naked eye. Sensor was exhibited good selectivity with sensitive. In addition, the sensing details were evaluated using UV–Vis spectroscopy. The physico-mechanical properties of NFCh i.e tensile strength, elongation and thicknesses were studied. NFCh with electron withdrawing group at organic ligand showed high selectivity for detection of ion nickel over other interfering anions.
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