Ratiometric Fluorescent Nanoprobe for Highly Sensitive Determination of Mercury Ions.

In this study, a novel dual-emission ratiometric fluorescent nanoprobe (RFN) was synthesized and ultilized for highly sensitive determination of mercury ions. In this nanoprobe, fluorescein isothiocyanate (FITC) doped silica (SiO) served as a reference signal, FITC-SiO microspheres were synthesized and modified with amino groups, and then Au Nanoclusters (AuNCs) were combined with the amino groups on the surface of the FITC-SiO microspheres to obtain the RFN. The selectivity, stability, and pH of the RFN were then optimized, and the determination of mercury ions was performed under optimal conditions.

Microwave-assisted synthesis of mutually embedded Rh concave nanocubes with enhanced electrocatalytic activity.

Novel mutually embedded Rh concave nanocubes were synthesized by reducing Rh(acac) in tetraethylene glycol in the presence of benzyldimethylhexadecylammonium, KI and polyvinylpyrrolidone under microwave irradiation for 120 s. KI and HDBAC were crucial to the formation of mutually embedded nanostructures. The as-prepared Rh nanocrystals exhibited higher electrocatalytic activity and stability.