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Research Article | Open Access

Enhancement in NO2 and H2-Sensing Performance of CuxO/TiO2 Nanotubes Arrays Sensors Prepared by Electrodeposition Synthesis

Araa Mebdir Holi1(), Ghufran Abd AL-Sajad1, Narahari Narayan Palei1, Asla Abdullah Al-Zahrani2, Asmaa Soheil Najm3
Department of Physics, College of Education, University of Al-Qadisiyah, Al-Diwaniyah, Al-Qadisiyah 58002, Iraq
Imam Abdulrahman bin Faisal University, Eastern Region, Dammam, Kingdom of Saudi
Department of Electrical Electronic & Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
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Abstract

The CuxO/TiO2 nanotubes arrays are fabricated in two stages. Firstly, TiO2-NTs are grown by the Ti-foil anodization process and then annealed for 2h at 500 ℃. Subsequently, CuxO thin film was deposited with different deposition times on the nanotubes by electrochemical cathodic reaction, then heated twice, once at 200 ℃ in the air and then at 300 ℃ in the closed furnace for 2 h, respectively. Pure-TNT and CuxO/TNTs heterostructure are characterized by XRD, FE-SEM, EDX, Hall effect, and as a gas sensor. Results show that the gas sensor (CuOx=1/TiO2 for NO2 and H2 gases) prepared at the time (1 min) is higher than the pure TiO2-NTs and also higher than Cux=2O/TiO2 which were synthesized at various times 3, 5, 7, and 10 mins.

Keywords

CuxO/TiO2 heterostructureGas sensorNanotube arraysElectrochemical deposition

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Nano Biomedicine and Engineering
Volume 14 Issue 1,
March 2022
Pages 7-14
DOI: 10.5101/nbe.v14i1.p7-14
Cite this article:
Mebdir Holi A, Abd AL-Sajad G, Palei NN, et al. Enhancement in NO2 and H2-Sensing Performance of CuxO/TiO2 Nanotubes Arrays Sensors Prepared by Electrodeposition Synthesis. Nano Biomedicine and Engineering, 2022, 14(1): 7-14. https://doi.org/10.5101/nbe.v14i1.p7-14
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