Porous reduced graphene oxide (rGO)/WO nanocomposites for the enhanced detection of NH at room temperature.

Incorporation of reduced graphene oxide (rGO) modifies the properties of semiconducting metal oxide nanoparticles and makes it possible to tune the surface area and pore size to optimum values, which in turn improves their gas sensing properties. In this work, to improve the ammonia (NH) gas sensing characteristics, reduced graphene oxide (rGO) was incorporated into tungsten oxide (WO) nanospheres using a simple ultrasonication method. The rGO-WO nanocomposites exhibited porous nanosheets with nanospherical WO as observed with field-emission scanning electron microscopy (FE-SEM).

Cytotoxic consequences of Halloysite nanotube/iron oxide nanocomposite and iron oxide nanoparticles upon interaction with bacterial, non-cancerous and cancerous cells.

Cytotoxic effects of iron oxide (FeO) nanoparticles and Halloysite nanotube/iron oxide (HNT/FeO) nanocomposite are compared based on their interaction with Gram-negative bacteria Escherichia coli and Gram-positive bacteria Bacillus subtilis. Similarly, the action of these two nanomaterials on non-cancerous Vero cell lines and human lung cancerous (A-549) cell lines are compared. The cytotoxicity studies on FeO nanoparticles and HNT/FeO nanocomposite showed difference in the rate of killing of bacterial cells.