FLOWER-LIKE NANOPARTICLES OF Pt–BiIII ASSEMBLED ON AGMATINE SULFATE MODIFIED GLASSY CARBON ELECTRODE AND THEIR ELECTROCATALYSIS OF H2O2

A new electrochemical technique to detect hydrogen peroxide (H2O2) was developed. The Pt nanoparticles and BiIII were subsequently assembled on agmatine sulfate (AS) modified glassy carbon electrode (GCE) and the prepared GCE–AS-Pt–BiIII was characterized by scanning electron microscopy (SEM) with result showing that the flower-like nanostructure of Pt–BiIII was yielded. Compared with Pt nanoparticles, the flower-like nanostructure of Pt–BiIII greatly enhanced the electrocatalysis of GCE–AS-Pt–BiIII towards H2O2, which is ascribed to more Pt–OH obtained on GCE–AS-Pt–BiIII surface for the presence of BiIII. Based on its high electrocatalysis, GCE–AS-Pt–BiIII was used to determine the content of H2O2 in the sample of sheet bean curd with standard addition method. Meantime, its electrocatalytic activity also was studied.