Fabrication of 3D honeycomb-like porous polyurethane-functionalized reduced graphene oxide for detection of dopamine

A. T.Ezhil Vilian, Suyeong An, Sang Rak Choe, Cheol Hwan Kwak, Yun Suk Huh, Jonghwi Lee, Young Kyu Han

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

A three dimensional reduced graphene oxide/polyurethane (RGO-PU) porous material with connected pores was prepared by physical adsorption of RGO onto the surface of porous PU. The porous PU was prepared by directional melt crystallization of a solvent, which produced high pores with controlled orientation. The prepared RGO-PU was characterized by scanning electron microscopy, spectroscopy and electro-chemical methods. The RGO-PU porous material revealed better electrochemical performance, which might be attributed to the robust structure, superior conductivity, large surface area, and good flexibility. Differential pulse voltammetry (DPV) analysis of DA using the RGO-PU exhibited a linear response range over a wide DA concentration of 100–1150 pM, with the detection limit of 1 pM. This sensor exhibited outstanding anti-interference ability towards co-existing molecules with good stability, sensitivity, and reproducibility. Furthermore, the fabricated sensor was successfully applied for the quantitative analysis of DA in human serum and urine samples with acceptable recovery, which indicates its feasibility for practical application.

Original languageEnglish
Pages (from-to)122-128
Number of pages7
JournalBiosensors and Bioelectronics
Volume86
DOIs
StatePublished - 15 Dec 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V.

Keywords

  • Dopamine
  • Electrocatalysis
  • Electrochemical sensor
  • Polyurethane
  • Reduced graphene oxide

Fingerprint

Dive into the research topics of 'Fabrication of 3D honeycomb-like porous polyurethane-functionalized reduced graphene oxide for detection of dopamine'. Together they form a unique fingerprint.

Cite this