Silver nanoparticles loaded on lactose/alginate: in situ synthesis, catalytic degradation, and pH-dependent antibacterial activity.

We present the in situ synthesis of silver nanoparticles (AgNPs) through ionotropic gelation utilizing the biodegradable saccharides lactose (Lac) and alginate (Alg). The lactose reduced silver ions to form AgNPs. The crystallite structure of the nanocomposite AgNPs@Lac/Alg, with a mean size of 4-6 nm, was confirmed by analytical techniques.

Coumarin-Based Dual Chemosensor for Colorimetric and Fluorescent Detection of Cu in Water Media.

A novel coumarin derivative () was synthesized and used as a colorimetric and fluorescent probe for selective detection of Cu ions in the presence of other metal ions, with the detection limits of 5.7 and 4.0 ppb, respectively.