A novel sensitive Cu(II) and Cd(II) nanosensor platform: Graphene oxide terminated p-aminophenyl modified glassy carbon surface

Add time:09/04/2019    Source:sciencedirect.com

Graphene oxide (GO) based glassy carbon (GC) electrode has been prepared. Firstly, p-nitrophenyl (NP) modified GC (NP/GC) electrode was prepared via the electrochemical reduction of its tetraflouroborate diazonium salt. After the formation of NP/GC electrode, the negative potential was applied to NP/GC electrode to reduce the nitro groups to amine. p-Aminophenyl (AP) modified GC (AP/GC) electrode was immersed into a graphene oxide solution containing 1-ethyl-3(3-(dimethlyamino)propyl)-carbodiimide. Hence, we constructed GO terminated AP modified GC (GO/AP/GC) electrode. NP/GC, AP/GC and GO/AP/GC electrodes were characterized sequentially using cyclic voltammetry (CV) in the presence of 1.0 mM of potassium ferricyanide in 0.1 M KCl. In addition, GO and GO/AP/GC surfaces were characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The GO/AP/GC electrode was used for the analysis of Cd(II) and Cu(II) ions by adsorptive stripping voltammetry. The linearity range and the detection limit of Cd(II) and Cu(II) ions were 1.0 × 10−11–5.0 × 10−10 M and 3.3 × 10−12 M (S/N = 3), respectively.

We also recommend Trading Suppliers and Manufacturers of 6-(p-Aminophenyl)-5-methyl-2-nitrophenanthridinium chloride (cas 111415-82-8). Pls Click Website Link as below: cas 111415-82-8 suppliers

Prev:Wholly aromatic polyamides and polyimides prepared from 3,3″-di(4-aminophenyl)-5,5″-di(4-biphenylyl)-p-terphenyl and 3,3″-di(4-aminophenyl)-5,5″,6,6″-tetraphenyl-p-terphenyl
Next:9,9-Bis{4-[di-(p-biphenyl)aminophenyl]}fluorene: a high Tg and efficient hole-transporting material for electroluminescent devices)