Chemically functionalized activated carbon with 8-hydroxyquinoline using aryldiazonium salts/diazotization route: Green chemistry synthesis for oxins-carbon chelators

Synthesis of 8-hydroxyquinoline-Amberlite IRC-50 chelator for solid phase extraction of trace metals from groundwater samples

“…Perhaps, the successfulness of immobilization of 8-HQ moieties on the resin surface can be confirmed from the characteristics bands shown at 1338, 1508 and 1634 cm −1 which proof the presence of (C-N), (N = N), and (C = N) respectively [22,44,34]. This finding supports that 8-HQ ligand is effectively anchored onto Amberlite IRC-50 surface through diazotized (N = N) coupling.…”

“…Subsequently, the nitro groups on the surface of Amberlite IRC-50 were reduced (aminated) by the addition of sodium hydrosulfite (Na 2 S 2 O 4 ) 5% (50 ml) in a locked flask at 45°C for 24 h, to convert all -NO 2 groups to -NH 2 . After that, the amino polymer was rinsed with cold distilled water in order to eliminate any retained regent [22,40,41].…”

“…chelating agent for metals) to a wide range of natural and pre synthesised solid supports. Among the favered preferred subtances are; silica gel [18][19][20], activated carbon [21,22], chelating ion exchange resins [23], naphthalene [24], zeolite [25], C18 [26], cellulosic derivatives [27], alumina [28,29], and XAD resins [30]. Extensive overview with demonstrative examples of the diffrent preparation methods for chelating resins can be found in many comperhensive reviews [30][31][32].…”

Development of Prosopis juliflora carbon-reinforced PET bottle waste-based epoxy-blended bio-phenolic benzoxazine composites for advanced applications

“…Activated carbon can act as a reactive intermediate to attach moieties, including amine and alcohol groups. 27 Based on the increasing interest and environmental concerns, the present work proposes the synthesis and characterization of cardanol benzoxazine blended with PET bottle waste-based epoxy resins for the production of partial bio-composites; we are pursuing new strategies to reuse PET bottles to minimise the environmental impact of PET bottle waste.…”

Hydrothermal Activation of Porous Nitrogen-Doped Carbon Materials for Electrochemical Capacitors and Sodium-Ion Batteries

“…The C-O stretches of the hydroxyl and alkoxy groups also raise bands at 1285 cm −1 and 1020-1045 cm −1 , respectively [40]. The peak at 1630 cm −1 is due to vibrations of aromatic C=C bonds and C=N bonds in the basal plane [24,41,42]. N-H stretching vibrations at 3220 cm −1 and N-H in-plane deformations at 1530 cm −1 [43] may overlap with other bands.…”