A Low-Cost Ion Selective Nitrate Sensor Based On Self-Assembled Graphene Microelectrode Arrays

Li Wang, Jungyoon Kim, Tianhong Cui

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

1 Scopus citations

Abstract

This paper reports a novel micro sensor which used self-assembled graphene microelectrode arrays to selectively detect nitrate solutions. Graphene microelectrode arrays were utilized to sensitively detect the change of ion density. Self-assembly technique provided an effective 3-dimensional platform for sensing applications. An ion selective ionophore film was deposited upon graphene surface to make the sensor selectively sensitive for nitrate ions. As a result, the self-assembled graphene microelectrode arrays showed superb sensing performance for pH with advantages of low cost and label free. After decorating nitrate ionophore film, the selective sensor demonstrated high sensitivity and reproducibility for nitrate ions. This simple, low-cost and selective sensor could lead to wide applications in environmental monitoring.

Original languageEnglish (US)
Title of host publication2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1234-1237
Number of pages4
ISBN (Electronic)9781728120072
DOIs
StatePublished - Jun 2019
Event20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII - Berlin, Germany
Duration: Jun 23 2019Jun 27 2019

Publication series

Name2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII

Conference

Conference20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
CountryGermany
CityBerlin
Period6/23/196/27/19

Keywords

  • Nitrate sensor
  • graphene
  • ion selective
  • self-assembly

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