Graphene based ultra sensitive ion sensor for phosphate detection

Jungyoon Kim, Li Wang, Tianhong Cui

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

Abstract

This paper reports graphene based, highly ion sensitive field effect transistor sensor for phosphate detection using a phosphate selective membrane. In the experiment, the shifted dirac point is measured to check the ions amount in the water. The selective membrane is synthesized by molecular imprinted polymer. The performance of sensor is tested with four different ion solutions (phosphate, sulfate, chloride and nitrate). Each solution has four different concentrations (0.05, 0.1, 1and 10 ppm). The dirac point shift from -0.08 V to -0.06 V as increasing the concentration. The detection limit and response time are 0.05 ppm and 1 min, respectively.

Original languageEnglish (US)
Title of host publication21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017
PublisherChemical and Biological Microsystems Society
Pages473-474
Number of pages2
ISBN (Electronic)9780692941836
StatePublished - Jan 1 2020
Event21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017 - Savannah, United States
Duration: Oct 22 2017Oct 26 2017

Publication series

Name21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017

Conference

Conference21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017
CountryUnited States
CitySavannah
Period10/22/1710/26/17

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Keywords

  • Graphene
  • Phosphate
  • Selective membrane
  • Sensor

Cite this

Kim, J., Wang, L., & Cui, T. (2020). Graphene based ultra sensitive ion sensor for phosphate detection. In 21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017 (pp. 473-474). (21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017). Chemical and Biological Microsystems Society.