LAUSR

For simultaneous water purification from both inorganic and organic pollutants, a novel multifunctional hybrid nanoadsorbent has been produced. Core–shell magnetic submicro-particles with iron oxide core and silica shell were used as substrate for immobilization of different functions. The activity toward heavy metals was provided via attachment of 3-aminopropyl-triethoxysilane (APTES) through the silanol group to the silica surface with subsequent chemical grafting of diethylenetriamine pentaacetic acid (DTPA) onto the APTES via an amide bonding. The residual APTES amino functions were partially converted into aldehyde ones via treatment with glutaraldehyde. Both aldehyde and carboxylic functions turned to be involved in laccase immobilization. The obtained hybrid multifunctional adsorbent exhibited relatively high capacity for Cd(II) removal. On average, the composite removed 76% of Cd(II) ions from the 0.1 μM model solution. At the same time, due to the immobilized laccase, high performance for drug re...