Atmosphere-Sensitive Reduction Of P-Nitrophenol Using B(PM-PP)/Zro₂ Nanocomposites: Toward Sustainable Electrochemical Reduction Platforms

Abstract

This study presents an eco-friendly platform for reductionof p-nitrophenol (PNP), utilizing a B(PM-PP)/ZrO₂ nanocomposite. Nanocomposites containing varying amounts of ZrO₂ (0.2,0.4,0.6,0.8,1.0 g) were synthesized.The interaction between the polymer blend and ZrO₂ has been confirmed by Fourier transform infrared spectroscopy (FTIR), as indicated by the Zr-O band at 840 cm ^-¹. The X-ray diffraction technique (XRD) was used to characterize the crystalline form of the nanocomposite. A high-resolution transmission electron microscopy (HRTEM) image demonstrates how each ZrO₂ particle embeds within the surface of the polymer blend component. Thermogravimetric analysis (TGA) was used to evaluate a thermal property of the nanocomposite. Cyclic voltammetry (CV) was used in electrochemical characterisation experiments to examine the enhanced performance of B(PM-PP)ZNCP5 modified GCE in optimal pH1.0 under various ambient conditions. In linear sweep voltammetry (LSV), B(PM-PP)ZNCP5 modified GCE potential moves to the negative side nearly 1000mV, demonstrating that the oxygen environment improved the electrocatalytic activity toward p-nitrophenol reduction. Using chromatoamperometric and chromatocoulometric studies, the diffusion coefficient value of B(PM-PP)ZNCP5/GCE, 3.14x10^-6 was determined under various atmospheric circumstances. As determined by electrochemical impedance spectroscopy (EIS), the resistance's double layer capacitance value is 5.573x10^-6 F/cm2. The findings underscore the potential of atmospheric-responsive reduction systems for environmental pollutant reduction.