Facile synthesis of PtAu nanoparticles/graphene nanocomposites for direct electrochemistry and electrocatalysis

Li Min Lu, Ou Zhang, Tao Nie, Jing Kun Xu, Kai Xin Zhang, Li Ping Wu, Yang Ping Wen

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

PtAu bimetallic nanoparticles (NPs) were successfully synthesized on single-stranded DNA functionalized graphene nanomaterials (ss-DNA/GR) via a simple chemical reduction method. The nanocomposites (PtAu/ss-DNA/GR) were characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectrometer (EDS) and electrochemical techniques. Then a sensitive dopamine (DA) sensor was fabricated based on PtAu/ss-DNA/GR nanocomposites modified glassy carbon electrode (GCE). The results of electrochemical experiments demonstrated that the sensor exhibited excellent electrocatalytic activity to the oxidation of DA. The sensor displayed wide linear detection range from 8.0×10-8 to 1.0×10-5 M and 1.0×10-5 to 5.0×10-5 M and a low detection limit of 1.0×10-8 M (S/N = 3). In addition, the sensor also showed high selectivity, good reproducibility and stability for DA detection. Thus, it is considered to be an ideal candidate for practical application.

Original languageEnglish
Title of host publicationOptoelectronics Engineering and Information Technlogies in Industry
Subtitle of host publicationselected, peer reviewed papers from the 2013 2nd International Conference on Opto-Electronics Engineering and Materials Research (OEMR 2013)
Editors D. A. Li, W. H. Zhou
Place of PublicationZurich, Switzerland
PublisherTrans Tech Publications
Pages750-754
Number of pages5
ISBN (Print)9783037857731, 9781629936215
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2nd International Conference on Opto-Electronics Engineering and Materials Research, OEMR 2013 - Zhengzhou, Henan, China
Duration: 19 Oct 201320 Oct 2013

Publication series

NameAdvanced Materials Research
Volume760-762
ISSN (Print)1022-6680

Other

Other2nd International Conference on Opto-Electronics Engineering and Materials Research, OEMR 2013
CountryChina
CityZhengzhou, Henan
Period19/10/1320/10/13

Keywords

  • graphene
  • nanocomposite
  • PtAu bimetallic nanoparticles
  • electrocatalysis
  • dopamine sensor

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