Categoria: Seminari e Convegni
Stato: Archiviata
6 luglio 2016
NoonTalk@DIATI - 06
ore 13:00 - Sala Riunioni 1° Piano DIATI ingresso 3, Politecnico di Torino - Corso Duca degli Abruzzi 24, Torino
- GROUNDWATER REMEDIATION WITH NANOSCALE ZEROVALENT IRON (NZVI): EFFECTS OF SULFIDATION AND RHAMNOIPID COATINGS ON TRANSPORT AND REACTIVITY - Seminario con Subhasis Ghoshal
ABSTRACT - Past studies have suggested various surface and aqueous chemistry modifications to enhance NZVI transport or reactivity, but few have assessed modifications that enhance both transport and reactivity. We show that surface functionalization of NZVI with inorganic sulfides or by rhamnolipid biosurfactants can enable dramatic (positive) effects on its colloidal stability, transport, and reactivity. The changes in surface chemistry that enhanced NZVI performance will be presented.
- TOWARDS MORE FREE-FLOATING MODEL CELL MEMBRANES: METHOD DEVELOPMENT AND APPLICATION TO THEIR INTERACTION WITH NANOPARTICLES - Seminario con Nathalie Tufenkji
ABSTRACT - Identifying the mechanisms of nanoparticle (NP) interactions with cell membranes is key to understanding their potential cytotoxicity and applications as nano-carriers for targeted drug delivery. Free-floating cell membranes would be better modeled by weakly adhered supported phospholipid bilayers (SPBs); thus, we propose a method for tailoring the interfacial interaction of a SPB-substrate system based on modulations in the solution chemistry. Importantly, the degree of SPB interaction with its underlying substrate is shown to be a critical factor in the kinetics of bilayer disruption by cationic NPs, whereby weakly adhered bilayers are prone to significantly faster breakup.