Au nanoparticles decorated polypyrrole/reduced graphene oxide hybrid sheets for ultrasensitive dopamine detection

•A new strategy to improve the sensitivity of PPy/GS composite sensors is proposed.•Au@PPy/GS composite was facilely synthesized by the novel initiation of HAuCl4.•The prepared composite is dramatically obtained a crumpled and wrinkled surface.•The flower-like Au nanoparticles are decorated on the P...

Full description

Saved in:
Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2014-03, Vol.193, p.759-763
Main Authors: Qian, Tao, Yu, Chenfei, Zhou, Xi, Wu, Shishan, Shen, Jian
Format: Article
Language:English
Subjects:
Au nanoparticles
Decoration
Dopamine
Electrochemical detection
Gold
Graphene
Nanoparticles
Oxides
Polypyrrole
Polypyrroles
Reduced graphene oxide
Sheets
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•A new strategy to improve the sensitivity of PPy/GS composite sensors is proposed.•Au@PPy/GS composite was facilely synthesized by the novel initiation of HAuCl4.•The prepared composite is dramatically obtained a crumpled and wrinkled surface.•The flower-like Au nanoparticles are decorated on the PPy/GS hybrid sheets.•Au@PPy/GS sensor offers an ultrasensitive detection for DA in biological systems. Au nanoparticles decorated polypyrrole/reduced graphene oxide hybrid sheets were facilely fabricated through a facile process. The prepared composite is dramatically obtained a crumpled and wrinkled surface, and uniform flower-like Au nanoparticles, which significantly improve the electrochemical properties in nano-molar level detection of dopamine. The novel sensor exhibits a remarkable sensitivity of 16.40μA/μM with a linear range of 0.1–5000nM and limit of detection as low as18.29pM.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2013.12.055