Biosynthesis of novel Hypercium sabrum extract mediated functionalized Ag@Fe3O4@SiO2 NCs for the efficient removal of poisonous pollutants: Greener journey and bioactivity

•Phytochemical profile monitoring and elemental analysis of the Hypercium sabrum plant extract.•Fabrication of TMSPHMAF and CPT functionalized Ag@Fe3O4@SiO2 NCs and their formation mechanism.•Structural elucidation of NCs using spectrophotometric, spectroscopic and surface analysis techniques.•Study of the zero-point charge pH (pHZPC) of the NCs surface.•Assessment of catalytic reduction of 4-NP and organic dyes and evaluation of removal efficiency (RE).•Evaluation of antimicrobial activities and scolicidal effect of green synthesized NCs. The full phytochemical profile and elemental analysis of the Hypercium sabrum plant extract as natural reducing media was investigated. The plant then was employed for green fabrication of recyclable 1-(3-(Trimethoxysilyl)propoxy)-1-hydroxy-2-methylallyl format (TMSPHMAF) and 5-Chloro-1-phenyl tetrazole (CPT) functionalized Ag@Fe3O4@SiO2 nanocomposites (NCs) and their formation mechanism. The structure of green fabricated NCs was elucidated using spectrophotometric, spectroscopic and surface analysis techniques. Also, for better catalytic performance of NCs in reduction of toxic nitro compounds and organic dyes and evaluation of potential removal efficiency (RE) of catalysts, the zero-point charge pH (pHZPC) of their surface was studied. Furthermore, the antimicrobial activities and scolicidal effect of NCs were studied against current pathogenic bacteria and hydatid cysts protoscolices. [Display omitted]