Journal
ANALYTICAL SCIENCES
Volume 26, Issue 3, Pages 343-347Publisher
JAPAN SOC ANALYTICAL CHEMISTRY
DOI: 10.2116/analsci.26.343
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Funding
- Program of Shandong Province Education Department [J06D55]
- Nature Science Foundation of Shandong Province [Y2007B15]
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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(4) 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.
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