A Hydrogen Peroxide Sensor Based on Palladium Nanoparticles Loading to Poly(amidoamine) Dendrimers Functionalized Carbon Nanotubes
10.11895/j.issn.0253-3820.160170
- VernacularTitle:基于聚酰胺-胺功能化碳纳米管负载钯纳米粒子的过氧化氢传感器
- Author:
Yanjun ZHANG
;
Xiuhui LIU
;
Juanjuan LU
;
Hongwei WEI
;
Xiaoquan LU
- Publication Type:Journal Article
- Keywords:
Palladium nanoparticles;
Poly ( amidoamine ) dendrimers;
Functionalized carbon nanotube;
Electrodepositing;
Hydrogen peroxide sensor
- From:
Chinese Journal of Analytical Chemistry
2016;44(9):1402-1409
- CountryChina
- Language:Chinese
-
Abstract:
The fourth generation poly( amidoamine) dendrimers ( G4. 0 PAMAM) functionalized multiwalled carbon nanotube ( G4 . 0-MWCNTs ) was prepared by amidation between carboxylated multiwalled carbon nanotube (MWCNTs) and G4. 0 PAMAM. Then a novel hydrogen peroxide (H2O2) sensor was fabricated by electrodepositing Pd nanoparticles (NPs) on a glassy carbon electrode (GCE) modified with G4. 0-MWCNTs composites. The modified electrode was characterized by field emission scanning electron microscopy ( FESEM) , cyclic voltammetry ( CV) and electrochemical impedance spectroscopy ( EIS) . A large amounts of highly dispersion PdNPs could be well loaded on the surface of the G4. 0-MWCNTs, and the modified electrode exhibited excellent electrocatalytic activity towards the reduction of H2 O2 . Under the optimized conditions, the reduction peak currents of H2 O2 were linear to their concentrations in the range from 1. 0 × 10-9 mol/L to 1. 0×10-3 mol/L and the limit of detection of 2. 3×10-8 mol/L was obtained. The recovery of standard addition for human serum samples was 96 . 7%-103 . 1%.
