Biogenic silver nanoparticles incorporated hydrogel beads for anticancer and antibacterial activities.

Green nanotechnology is an effective treatment approach being used in cancer research with less adverse effects. This work describes the incorporation of silver nanoparticles synthesized from clitoria ternatea plant extract (Ag@CT NPs) into sodium alginate and gelatin polymer blends (SA/GEL) to produce Ag@CT-SA/GEL polymer beads using calcium chloride (CaCl) crosslinking agent. Both the formation and the effective incorporation of Ag@CT NPs into polymer blend have been proven by various spectroscopic analysis, surface morphology study and energy dispersive X-ray analysis.

β-Cyclodextrin capped ZnS nanoparticles for CER-assisted colorimetric and spectrophotometric detection of Pb⁺, Cu⁺, and Hg⁺ in an aqueous solution.

Herein, simple, low-cost, and room-temperature synthesis of beta-cyclodextrin (β-CD) stabilized zinc sulfide nanoparticle (ZnS NP) through the chemical precipitation method has been reported for cation exchange reaction (CER) based colorimetric sensing of Pb, Cu, and Hg. Formation of β-CD stabilized ZnS NPs (ZnS@β-CD) was verified by physicochemical characterization techniques such as XRD, XPS, FE-SEM, and TEM. ZnS@β-CD NPs showed color change selectively for the metal ions Pb⁺, Cu⁺, and Hg⁺ among the various metal ions including Sn⁺, Cr³⁺, Mn⁺, Fe³⁺, Co⁺, Ni⁺, and Cd⁺.