The effect of deposition time on the structural, morphological and H2S gas sensing properties of the V2O5 nanostructures deposited by hydrothermal method

  • M. Ali YıldırımEmail author
  • Sümeyra Tuna Yıldırım
  • Ali Orkun Çağirtekin
  • Mert Karademir
  • Irmak Karaduman Er
  • Aysun Coşkun
  • Aytunç Ateş
  • Selim Acar


V2O5 nanostructures were successfully deposited on glass substrates by hydrothermal method at 180 °C for the deposition times of 4, 6, 8, 10 h. The effect of deposition time on the structural, morphological, compositional and H2S gas sensing properties of the nanostructures were investigated by XRD, SEM, EDAX and gas measurement system, respectively. The XRD and SEM studies indicated that the nanostructures had polycrystalline nature with monoclinic phase of V2O5 and the structural and morphological properties of the nanostructures depended on the deposition time. The sensing measurements of the sensors were made based on temperature and gas concentration. The sensors exhibited high responses towards 50 ppm H2S gas concentration at operating temperature of 145 °C. In addition, the sensors showed acceptable responses at temperatures below the operating temperature of 50 °C. It was seen that the gas sensing properties of the nanostructure deposited for 6 h deposition time were better than others.



The authors would like to acknowledge the financial support given by the TUBİTAK Foundation, Project No: 216M387.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • M. Ali Yıldırım
    • 1
    Email author
  • Sümeyra Tuna Yıldırım
    • 2
  • Ali Orkun Çağirtekin
    • 3
  • Mert Karademir
    • 1
  • Irmak Karaduman Er
    • 4
  • Aysun Coşkun
    • 5
  • Aytunç Ateş
    • 6
  • Selim Acar
    • 3
  1. 1.Department of Electrical and Electronic Engineering, Engineering FacultyErzincan Binali Yıldırım UniversityErzincanTurkey
  2. 2.Department of Analytical Chemistry, Pharmacy FacultyErzincan Binali Yıldırım UniversityErzincanTurkey
  3. 3.Department of Physics, Science FacultyGazi UniversityAnkaraTurkey
  4. 4.Department of Medical Services and Techniques, Eldivan Medical Services Vocational SchoolÇankırı Karatekin UniversityÇankırıTurkey
  5. 5.Department of Computer Engineering, Technology FacultyGazi UniversityAnkaraTurkey
  6. 6.Department of Material Engineering, Engineering and Natural Sciences FacultyAnkara Yıldırım Beyazıt UniversityAnkaraTurkey

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