Fabrication of ultra-sensitive piperidine chemical sensor with a direct grown well-aligned ZnO nanorods on FTO substrate as a working electrode

Rizwan Khan, Uthirakumar Periyayya, Gyu Cheol Kim, In-Hwan Lee

Research output: Contribution to journalArticle

Abstract

In this work, we report a direct growth of well-aligned zinc oxide nanorods (ZNRs) on fluorine doped tin oxide (FTO) substrate by a single step chemical method in an aqueous solution; the synthesized ZNRs were then used for piperidine sensing studies, as a working electrode. The ZNRs were uniformly grown in a large area, highly crystalline, and vertically aligned with an average length and diameter of ~650 nm and ~50 nm, respectively. The vertically aligned ZNRs provide the higher surface area for electrocatalytic activity of piperidine, and thus exhibited an ultra-sensitivity of 527 μAmM−1cm−2, a low detection limit (~60 nM), and a wide linear detection range from 0.1 μM to 200 μM. The improved piperidine sensing response characteristics of direct grown ZNRs on FTO substrate due to the large surface area, higher electrocatalytic activity and the fast electron transfer process, which makes them interesting candidate for fabricating other chemical sensing devices.

Original languageEnglish
Article number105986
JournalSolid State Sciences
Volume97
DOIs
Publication statusPublished - 2019 Nov 1

Fingerprint

Zinc Oxide
piperidine
Fluorine
Zinc oxide
Tin oxides
Chemical sensors
Nanorods
zinc oxides
tin oxides
nanorods
fluorine
Fabrication
Electrodes
fabrication
electrodes
sensors
Substrates
electron transfer
stannic oxide
Crystalline materials

Keywords

  • Chemical sensor
  • Piperidine
  • Solution method
  • Ultra-sensitivity
  • ZnO nanorods

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Fabrication of ultra-sensitive piperidine chemical sensor with a direct grown well-aligned ZnO nanorods on FTO substrate as a working electrode. / Khan, Rizwan; Periyayya, Uthirakumar; Kim, Gyu Cheol; Lee, In-Hwan.

In: Solid State Sciences, Vol. 97, 105986, 01.11.2019.

Research output: Contribution to journalArticle

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AU - Lee, In-Hwan

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