Design and fabrication of a low-cost curcumin-based paper sensor for rapid “naked-eye” cyanide sensing

Curcumin Is an Iconic Ligand for Detecting Environmental Pollutants

“…The carbonyl moiety of curcumin and its derivative are capable of nucleophilic addition with anions such as cyanide and produce a change in FTIR signals. The change in the carbonyl peak after cyanide addition was significant [ 14 , 88 ]. The color of curcumin-based paper sensor changed from yellow to red in the presence of cyanide ions in water.…”

“…Curcumin (C 21 H 20 O 6 ), a natural fluorophore is an ideal organic ligand, capable of showing alterations in their optical as well as electrochemical properties in the presence of significant environmental pollutants. Such signals can be used for the effective detection of select pollutants [ 14 , 15 ]. Furthermore, the tautomeric form of curcumin is used as an electrochemical transducer and ion receptor.…”

Membrane Sensor Polyvinyl Chloride with Immobilization Dithizone for Determination of Nickel (II) Ion

“…Ref.. [4] used filter paper as a matrix for Cyanide (CN -) sensors. For this reason, the filter paper was soaked with ethanol, heated at a temperature of 78-80 0 C for 45 minutes, and then the paper was washed with distilled water, dried, then soaked with curcumin.…”

Preparation of Spin-Coated Poly(vinyl alcohol)/ chitosan/ Gold Nanoparticles Composite and Its Potential for Colorimetric Detection of Cyanide in Water

“…Standard techniques such as spectroscopy, gas chromatography, titrimetry, amperometry, and electrochemistry all entailed complicated instrumentation, special training, and tedious sample preparation [3,4]. This led researchers to explore other suitable materials and analytical platforms for rapid and reliable detection of CN - [5,6].…”