Synthesis of biocompatible Konjac glucomannan stabilized silver nanoparticles, with Asystasia gangetica phenolic extract for colorimetric detection of mercury (II) ion.

ABSTRACT: Herein, the synthesis of a biocompatible silver nanoparticles (AgNPs), for colorimetric detection of toxic mercury (II) ion (Hg²⁺), is reported. Phenolic-rich fraction of Asystasia gangetica leaf was extracted and used as a reductant of silver salt, all within the hydrophilic konjac glucomannan (KgM) solution as stabilizer, at room temperature (RT). The bioactive components of Asystasia gangetica phenolic extract (AGPE), as elucidated with a (UHPLC-MS-QTOF-MS), revealed plethora of phenolic compounds, which can facilitate the reduction of silver salt at ambient conditions. Sparkling yellow colloidal solution of KgM-AgNPs was realized within 1 h, at RT, having a UV-vis maximum at 420 nm. KgM-AgNPs was characterized using UV-vis, Raman and (FTIR), TEM, SEM, EDS, XRD, TGA/DTG. TEM

SUBMITTER: Jayeoye TJ 

PROVIDER: S-EPMC9163164 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature