Highly sensitive ethanol gas sensors based on ag-doped ZnO nanocones

Ahmad Umar, Jong Heun Lee, Rajesh Kumar, O. Al-Dossary

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Herein, we report the successful synthesis, characterization and ethanol gas sensing applications of Ag-doped ZnO nanocones. The Ag-doped ZnO nanocones were synthesized by a facile hydrothermal process and characterized using various analytical tools such as scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and UV-visible spectroscopy. The detailed studies revealed that the synthesized Ag-doped ZnO nanocones possess good crystallinity and optical properties. Finally, the prepared Ag-doped ZnO nanocones were used as an electrode material to fabricate highly sensitive and selective gas sensors for reducing gases such as C2H5OH, H2 and CO. The fabricated Ag-doped ZnO nanocones based sensors exhibited a higher response for C2H5OH as compared to H2 and CO. Moreover, at a lower operating temperature of 400 C, excellent sensitivity was reported for C2H5OH as compared to the higher temperature of 450 C.

Original languageEnglish
Pages (from-to)241-246
Number of pages6
JournalNanoscience and Nanotechnology Letters
Issue number3
Publication statusPublished - 2016 Mar


  • Ag-ZnO Nanocones
  • Ethanol
  • Gas Sensor

ASJC Scopus subject areas

  • Materials Science(all)


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