PbS nanocrystals decorated Reduced Graphene Oxide for NIR responsive capacitive cathodes

Au nanoparticle decorated reduced graphene oxide and its electroanalytical characterization for label free dopamine detection

“…The design of the hybrid Au NP decorated RGO nanocomposite consists of the use of a functional linker, AP, serving as a coupling agent at the RGO/Au NP interface, and thus enabling an effective merge of the functionalities of the two components. 22,23,25…”

“…Commercially available RGO has been exfoliated and functionalized with AP following the approach reported in ref. 22 and 23. Briefly, successive cycles of sonication and stirring of the RGO powder in a solution of AP in N -methyl-2-pyrrolidone (NMP), have been performed, followed by purification of the flakes from AP in excess by centrifugation and re-dispersion in methanol.…”

“…Briefly, successive cycles of sonication and stirring of the RGO powder in a solution of AP in N -methyl-2-pyrrolidone (NMP), have been performed, followed by purification of the flakes from AP in excess by centrifugation and re-dispersion in methanol. 22,23…”

“…AP anchors the RGO basal plane through aromatic π–π stacking interactions that can open small gaps at the graphene sheet edges and penetrate deeper into the graphene multilayers, ultimately generating the AP–RGO complex. 22,23 Concomitantly, AP grafts reactive –NH 2 groups on RGO, which preserves its C-sp 2 structure, 27 and enable dispersion of the RGO sheets in solvents. 37…”

“…Commercial RGO was exfoliated and functionalized with AP following the procedure reported in ref. 22, 23 and 25 with minor modifications, which involves sonicating a mixture of RGO and AP powders, prepared in a 1 : 17 w/w in NMP, 22,23,25 followed by purification by four cycles of centrifugation and re-dispersion in methanol, to remove AP in excess. 22,23,25…”