Abstract

The remarkable ability of magnetic p-n heterojunction catalyst constructed with p-type poly-m-aminophenol (PmAP)/n-type Cobalt ferrite (CoFe2O4) catalyst to degrade BPA, ciprofloxacin drug (CIF) and its antibacterial activity in killing the microbes was explored on Gram-positive (S. aureus) and Gram-negative (E. coli). The p-n heterojunction photocatalyst was synthesized easily via hydrothermal reaction followed by chemical oxidative polymerization process. PXRD, FTIR, SEM, HRTEM, XPS, EDX, PL/TRPL, BET surface area, VSM and Uv-DRS techniques were used to confirm the synthesized catalyst's physicochemical characteristics and structural details. At ambient conditions, the synthesized catalyst showed rapid mineralisation of the organic pollutants by nearly 100 % at a concentration of 50 ppm in just one hour, with a catalyst loading of 0.1 g. The mineralisation pathways of the organics were illustrated through the GC–MS and TOC analysis. Furthermore, the disinfection capacity of the heterojunction had showed 5 fold quicker than the individual catalysts. This p-n heterojunction catalyst show excellent activity and quick magnetic separable quality which make it a catalyst for sustainable water purification process in future.

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