کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1281245 | 1497499 | 2014 | 9 صفحه PDF | دانلود رایگان |
• The GO and CoAPFP boned thought the amide bridge resulting strong electronic communications being appeared.
• GO-CoAPFP is functionalized by electrochemical investigation revealed that the ERGO sheet.
• ERGO-CoAPFP is highly efficient for oxygen reduction reaction (ORR) catalysis.
• ERGO-CoAPFP improves electrocatalytic activity and establishes a four-electron transfer pathway.
Cobalt[5,15-(p-aminophenyl)-10,20-(pentafluorophenyl)porphyrin] (CoAPFP) functionalized with graphene oxide (GO) by N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDC hydrochloride) was used as an amide-coupling reagent (GO-CoAPFP). Electrochemical investigation revealed that ERGO-CoAPFP exhibited much better catalysis and better-improved oxygen reduction reaction (ORR) than GO-CoAPFP. ERGO-CoAPFP is a simple and facile method of improving electrocatalytic activity. The ERGO-CoAPFP catalysts were tested in ORR using electrochemical techniques such as cyclic voltammetry (CV) and rotating-ring-disk-electrode (RRDE) hydrodynamic voltammetry to quantitatively obtain the ORR kinetic constants and the reaction mechanisms on a glassy carbon electrode (GCE) in a 0.1 M KOH solution. The electrocatalytic oxygen reduction reaction of RRDE modified with ERGO-CoAPFP established a pathway of four-electron transfer reactions.
Figure optionsDownload as PowerPoint slide
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 10, 26 March 2014, Pages 4803–4811