Self-assembled quantum dots decorated polypyrrole based multifunctional nanocomposite

A modified sol-gel method was used for the synthesis of V/Mn/ZnO (VMZ) self-assembled ternary quantum dots (QDs). The polypyrrole (PPy) was polymerized through the chemical oxidative process. In situ technique was employed for synthesizing VMZ/PPy nanocomposites (NCs). FESEM, TEM, FTIR, UV–visible, Raman, DSC , PL , powder XRD , TGA and DSC were employed to characterize QDs and VMZ/PPy NCs. The theoretical (DFT) method was used to augment the experimental results. For the first time, we are reporting the electrical, adsorption, magnetic, photocatalytic, antibiotic, thermal, and photoluminescent, and anticorrosive properties of VMZ/PPy NCs. VMZ/PPy NCs show a para-magnetic character. The optical band obtained from DFT and UV–visible study was almost similar. For low-carbon steel, the NCs show a maximum of 83.08 ± 0.2% corrosion inhibition efficiency in 1 M HCl. The column packed with silica gel + QDs shows better adsorption capacity than the conventional silica-gel column. The photocatalytic activity of NCs was investigated against methyl-blue dye in UV light. The antibacterial property was investigated against Gram-positive and Gram-negative bacterial strains. The adsorption, magnetic, photocatalytic, electrical, antibiotic, thermal and photoluminescent, and anticorrosive properties of the VMZ/PPy NCs proved it a very good multifunctional nanomaterial . Self-assembled quantum dots of V/Mn/ZnO (VMZ) were used for the in situ polymerizations of Polypyrrole (PPy) based NCs. The adsorption, magnetic, photocatalytic, electrical, antibacterial, thermal, photoluminescence, optical, and anticorrosive properties of VMZ QDs decorated PPy NCs were explored. The PPy based NCs show good photocatalytic, magnetic, electrical, antibacterial, separation, thermal and luminescent and anticorrosive properties. • First time, we are reporting multifunctional VMZ QDs decorated PPy NCs. • Theoretical (DFT) and experimental study augment each other results. • Silica gel + QDs packed column shows high adsorption power than pure silica gel. • NCs show paramagnetic, antibacterial, thermal stability, conducting, PL, and photocatalytic activity. • The PPy based NCs shows eight novel applications.