Effect of annealing temperature for structural, electrical, and ammonia sensing properties of pristine ZnO and ZnO/SiO2 nanoparticles


  • Pitchanunt Chaiyo Faculty of sports and health science, Thailand National Sports University Sisaket Campus, Sisaket, 33000, Thailand
  • Kewalin Dokden Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand
  • Orathai Thumthan Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand
  • Supon Sumran Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand




ZnO, ZnO/SiO2, ZnO nanoparticles, electrical properties, gas sensing properties


The main objective of this research was to study the electrical and gas-sensing properties of Zinc oxide (ZnO) nanoparticles. The samples were divided into two conditions in the preparation process. In the first condition, ZnO powder was annealed at temperatures of 650, 700, and 750 C for 2 h, while the second condition involved mixing ZnO powder with SiO2 powder and annealing at temperatures of 650, 700 and 750 C for 2 h. The characteristics of the prepared samples were studied by scanning electron microscopy (SEM) and the X-ray diffraction technique (XRD). The SEM images showed the agglomeration of the particles with micron-sized diameters. In addition, the XRD patterns of all samples exhibited the hexagonal structure of ZnO. Assessment of the electrical properties of the samples was carried out by forward bias from 0 – 15 V and reverse bias from 0 V to -15 V. The I – V characteristic curves showed diode-like rectifying behavior.The gas-sensing property of the samples was investigated by using ammonia gas, and ZnO nanoparticles annealed at 750 ºC for 2 h were found to have the highest sensitivity.


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P. Chaiyo et al. / J. Mater. Sci. Appl. Energy. 13(2) (2024) 251482




How to Cite

Chaiyo, P., Dokden, K. ., Thumthan, O. ., & Sumran, S. . (2024). Effect of annealing temperature for structural, electrical, and ammonia sensing properties of pristine ZnO and ZnO/SiO2 nanoparticles. Journal of Materials Science and Applied Energy, 13(2), 251482. https://doi.org/10.55674/jmsae.v13i2.251482