Detection and Degradation Studies of Nile Blue Sulphate Using Electrochemical and UV-Vis Spectroscopic Techniques

An efficient and reliable electrochemical sensing platform based on COOH-fMWCNTs modified GCE (COOH-fMWCNTs/GCE) was designed for the detection of nanomolar concentration Nile Blue Sulphate (NBS). In comparison to bare GCE, scaffold considerably enhanced peak current response NBS dye as confirmed from results voltammetric investigations. The approach detecting in droplet its solution dried over surface electrode validated, role modifier enhancing response. Under optimized conditions, demonstrated a wide linearity range (0.03–10 μM) NBS, with LOD 1.21 nM. Moreover, COOH-fMWCNTs/GCE found reproducible stable by repeatability inter-day durability tests. selectivity matrix ensured anti-interference photocatalytic degradation carried out using TiO2 nanoparticles photocatalyst presence H2O2. UV-visible spectroscopic studies revealed 95% following pseudo-first-order kinetics rate constant 0.028 min−1. These findings were supported electrochemically monitoring photocatalytically degraded at platform. color variation final decolorization selected water served visual indicator process. To conclude, immobilized imparted improved sensitivity detect to, monitor NBS.