Ultrasensitive micro sensor based on layer-by-layer self-assembled graphene and gold nanoparticles for trace mercury (II) ions determination

Z. Wu, L. Wang, G. Jing, T. Cui

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A novel ultrasensitive micro sensor for the detection of trace mercury (II) is designed and fabricated by depositing mixture of gold nanoparticles (Au NPs) and graphene nanosheets on a gold electrode surface by layer-by-layer self-assembled (LBL SA) technique. The sensor's performance was enhanced greatly in determination of Hg (II) using anodic stripping voltammetry (ASV) due to unique properties of graphene nanosheets, as well as uniformly distributed gold nanoparticles. Eventually, this sensor's limit of detection (LOD) could be derived as 0.361 ppb, with a sensitivity of 0.958 μA/ppb.

Original languageEnglish (US)
Title of host publication20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016
PublisherChemical and Biological Microsystems Society
Pages1104-1105
Number of pages2
ISBN (Electronic)9780979806490
StatePublished - Jan 1 2016
Event20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016 - Dublin, Ireland
Duration: Oct 9 2016Oct 13 2016

Publication series

Name20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016

Other

Other20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016
CountryIreland
CityDublin
Period10/9/1610/13/16

Keywords

  • Gold nanoparticles
  • Graphene
  • Layer-by-layer self-assembly
  • Mercury ions sensor

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  • Cite this

    Wu, Z., Wang, L., Jing, G., & Cui, T. (2016). Ultrasensitive micro sensor based on layer-by-layer self-assembled graphene and gold nanoparticles for trace mercury (II) ions determination. In 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016 (pp. 1104-1105). (20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016). Chemical and Biological Microsystems Society.