A simultaneous voltammetric temperature and humidity sensor

Linhongjia Xiong, Ai M. Fletcher, Stephen G. Davies, Sarah E. Norman, Christopher Hardacre, Richard G. Compton

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

We report the simultaneous measurement of temperature and humidity by analysing square wave voltammetric responses of two ferrocene derivatives, decamethylferrocene (DmFc) and 1,2-diferrocenylethylene (bisferrocene, BisFc) in 1-(2-methoxyethyl)-1-methyl-pyrrolidinium tris(pentafluoroethyl) trifluorophosphate ([Moepyrr][FAP]). These two molecules produce three peaks in square wave voltammetry. Through study of the peak potentials of BisFc/BisFc(+) (vs. DmFc/DmFc(+)) and BisFc(+)/BisFc(2+) (vs. DmFc/DmFc(+)) over a temperature range of 298 K to 318 K and humidity range of 1% to 50% using square wave voltammetry, the temperature and humidity dependences of the relative peak potentials were investigated. A reliable method to calculate the humidity and temperature based on the voltammetric experiment is characterised and demonstrated.

Original languageEnglish
Pages (from-to)4951-4957
Number of pages7
JournalAnalyst
Volume137
Issue number21
DOIs
Publication statusPublished - 07 Nov 2012

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Electrochemistry
  • Biochemistry
  • Environmental Chemistry

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