A compact prospective investigation on colorimetric recognition of Hg2+ ion and photostimulated degradation of excreted toxic organic dyes motivated by H. mutabilis directed silver nanoparticles.
Current researches on excreted detrimental chemical hazards successfully put forward the noxious effects of toxic metal ion and released harmful organic dyes (like TB and Rh-B) upon revelation into the environment. However, the exposure of Hg2+ ions is the most alarming sinister among all. In order to get rid of the littering deleterious effect, detection of Hg2+ ion is outrageously argent. Motivating on that, we have first time proclaimed a decisive picomolar level detecting colorimetric sensor stabilized by Hibiscus mutabilis leaf extract. It manifested the outstanding selectivity, superb single shot response and immense sensitivity towards Hg2+ ion with a committed detection limit of 48 pM. Again, our synthesized nanoparticles were found eligible as a capable photon induced catalyst for degradation of commercially excreted toxic anthropogenic organic dyes TB and Rh-B, degraded up to 94% and 97%, respectively. The used experimental approaches to vivid the summate landscape of the whole investigation were UV-vis, DLS, HRTEM, XRD, FESEM, XPS and zeta potential. It was ensured that Ag(Hg) amalgam formation was the mechanism for detection of Hg2+ ion. Intriguingly, the sensitivity of the system was progressively promoted to lower detection limit (30 pM) in the presence of high salt concentration. We anticipated that this research could pose a revolutionary impact and encouraged the scientists to follow the “go green” strategy for development of risk free supplementary nanoparticles to fight against environmental hazards.