A Hydrogen Peroxide Sensor Based on Pt@Au Nanoparticles Loading to Polyethyleneimine Functionalized Carbon Nanotubes
10.3724/SP.J.1096.2014.31176
- VernacularTitle:聚乙烯亚胺功能化碳纳米管负载铂@金核壳纳米粒子的过氧化氢传感器
- Author:
Weiwei WANG
;
Yu QIU
;
Shaopeng ZHANG
;
Jiawei LI
;
Xiaoquan LU
;
Xiuhui LIU
- Publication Type:Journal Article
- Keywords:
Seed-mediated growth;
Polyethyleneimine;
Functionalized carbon nanotubes;
Pt Au nanoparticles;
Modified electrode;
Hydrogen peroxide
- From:
Chinese Journal of Analytical Chemistry
2014;(6):835-841
- CountryChina
- Language:Chinese
-
Abstract:
A novel hydrogen peroxide sensor was fabricated by the seed-mediated growth method. First, polyethyleneimine(PEI) functionalized multiwalled carbon nanotubes(MWNTs) were used as growth scaffold on the glass carbon electrode ( GCE). Then, Au nanoparticles were electrodeposited uniformly as seeds. Finally, Pt nanoparticles ( PtNPs ) grew on Au nanoparticles to form Pt @ Au core-shell structure nanocomposite. A new type of electrochemical sensor based on Pt @ Au / PEI-MWNTs nanocomposites for detection of hydrogen peroxide was developed, and the designed Pt@ Au / PEI-MWNTs/ GCE was characterized by electrochemical methods and field emission scanning electron microscopy (FESEM). The Differential pulse experimental results showed that the modified electrode exhibited excellent electrocatalytic activity towards the reduction of H2 O2 with the wide linear range from 9. 2 ×10-8 mol/ L to 1. 3 ×10-3 mol/ L. The correlation coefficient was 0. 9994 and the low detection limit was 3. 1×10-8 mol/ L at the signal-to-noise of 3.
