A near-infrared "turn-on" fluorescent probe for selective detection of copper(II) ions in aqueous media and its application in cell imaging.

Copper (II) is considered the third most essential trace element for life, following iron and zinc, and plays a vital role in various physiological and pathological processes. The fluorescent probe has become an important method for the detection of heavy metal ions. This investigation involved the development and synthesis of a near-infrared "turn-on" fluorescent probe, DCX-Cu, with a significant Stokes shift (156 nm), specifically to identify Cu compared other ions.

[Studies on preparation of CdS/TiO2/float pearls coupled photocatalyst and degradation of beta-cypermethrin].

The coupled photocatalyst of CdS/TiO2/float pearls was prepared by sol-gel-dipping method, and its structure characterization was carried out with SEM and XRD analysis. As a model reaction, the photocatalytic degradation of beta-cypermethrin (BEC) was investigated in CdS/TiO2/float pearls powder suspension irradiated by different light sources. The effects of influence factors on the photocatalytic activity were discussed for the prepared photocatalyst.