Detection and separation of silver ions from industrial wastewaters using fluorescent d-glucose carbon nanosheets and quaternary silver indium zinc sulphide quantum dots

Fluorescence sensing and adsorption kinetics of Gd-doped AgInS2 I-III-VI quantum dots – A case study of Ag+ ions interactions

“…The interaction of ternary I-III-VI QDs with trace concentrations of Ti, Pb, Cr, and Zn through carboxylate binding during has been reported [ 29 ]. PL enhancement was reported for interactions with low concentrations of Zn, Cr, and Ti while PL quenching was reported with Pb [ 13 , [30] , [31] , [32] , [33] , [34] ].…”

“…Besides their safety compared to conventional binary II-VI QDs [ [7] , [8] , [9] ], the presence of the paramagnetic ions (Gd, Mn, Ni, or Co) and magnetic materials (Fe 3 O 4 ) within their current structure enables them for potential use for easy separation from aqueous solutions via magnetic field attractions [ 10 ]. Ternary I-III-VI quantum dots have demonstrated promising potential in the fluorescence detection of various heavy metals [ 11 , 12 ] but rarely in the detection of Ag [ 13 ]. Furthermore, a few challenges such as low magnetic loading capacity due to loss in fluorescence at high magnetic loading and stability at certain pHs are eminent [ 14 , 15 ], limiting their use for water remediation.…”