Dipicrylhydrazine: A versatile visual anions sensor. Issue 3 (June 2017)

• Record Type: Journal Article
• Authors: Sharma, Pragati R.; Soni, Vineet Kumar; Pandey, Shubham; Choudhary, Ganpat; Plappally, Anand K.; Sharma, Rakesh K.
• Is Part Of: Journal of environmental chemical engineering. Volume 5:Issue 3(2017:Sep.)
• Page Start: 2232
• Page End: 2239
• Publication Date: 2017-06
• Subjects: Dipicrylhydrazine -- Visual anions sensor -- Fluoride -- Cyanide -- Acetate -- Hydroxide -- Hydrogen sulphate; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2017.04.048
• Languages: English
• ISSNs: 2213-2929

Abstract

Graphical abstract: Dipicrylhydrazineis proposed as a simple and effective visual sensor for F −, CN −, OH −, CH3 COO − and HSO4 − anions. Highlights: We developed new visual anion sensor based on dipicrylhydrazine. The new sensor gave sharp color change for fluoride, cyanide, acetate, hydrogen sulphate and hydroxide anions. The time dependent NMR study revealed stronger interaction for cyanide and fluoride ions among competing anions. Abstract: The current study involves a simple hydrazine based colorimetric chemo-sensor for selective determination of various anions. The anion-binding ability of the ligand with various anions via polar-non polar interactions and hydrogen bonding has been examined. The sensor displayed significant UV–vis enhancement response to anions such as fluoride, acetate, hydroxide, cyanide and hydrogen sulphate, with respect to concentration and time. The rate constants ( K ) and binding constants, Ka, for these anions have been measured by using Benesi-Hildebrand equation. A time dependent NMR study revealed stronger interaction for cyanide and fluoride ions among competing anions.