Prussian blue electrodeposited on nano Ag-coated multiwalled carbon nanotubes composite for the determination of hydrogen peroxide.
A prussian blue (PB) electrodeposited on nano Ag-coated multiwalled carbon nanotubes (nano Ag-MWNTs) was reported. Also a PB/nano Ag-MWNTs composite modified glass carbon (GC) electrode was used to investigate the electrochemical behavior concerning the reduction of hydrogen peroxide. The experiment results showed that the PB/nano Ag-MWNTs/GC electrode had a wide linear range, a fast response time and high sensitivity toward the electrocatalytic reduction of hydrogen peroxide. PB and nano Ag-MWNTs had a synergistic electrocatalytic effect toward the reduction of hydrogen peroxide. The PB/nano Ag-MWNTs/GC electrode exhibited a wide linear response range of 8 x 10(-8) to 5 x 10(-3) mol/L with a correlation coefficient of 0.998 for the detection of hydrogen peroxide. Also the response time, detection limit (S/N = 3) and sensitivity of the PB/nano Ag-MWNTs/GC electrode were respectively determined to be 2 s, 4 x 10(-8) mol/L and 920 A/mol cm(2). Another attractive characteristic was that the PB/nano Ag-MWNTs/GC electrode showed high stability and reproducibility.
Zhai
Xiurong
X
Department of Chemisry and Chemical Engineering, Jining University, Qufu 273155, China. zhaixiurong@163.com
Gao
Zhongjun
Z
D004563:Electrochemistry; D004566:Electrodes; D005295:Ferrocyanides / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000032:analysis*; D053768:Metal Nanoparticles / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties
D005295:Ferrocyanides; D037742:Nanotubes, Carbon; D012834:Silver; D006861:Hydrogen Peroxide; C000170:ferric ferrocyanide