Impact of sodium on acetone sensing behaviour of ZnO prepared by microwave-assisted combustion method

• Published in: Discover materials Vol. 5; no. 1; pp. 142 - 14
• Main Authors: Singh, Divyanshu, Shukla, Anurag, Mishra, Sumit, Singh, Brajendra
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 24.07.2025; Springer Nature B.V; Springer
• Subjects: Acetone sensing; Alkali metal; Atoms & subatomic particles; Biomaterials; Characterization and Evaluation of Materials; Chemistry and Materials Science; Electron microscopes; Energy Materials; Materials Science; Metallic Materials; Microwave-assisted combustion synthesis; Morphology; Na-doped ZnO; Scanning electron microscopy; Sensors; Sodium; Software; Structural Materials; Temperature; VOCs; Volatile organic compounds; X-rays; Zinc oxides; Microwave-assisted combustion synthesis; Acetone sensing; Alkali metal; Na-doped ZnO; Morphology
• ISSN: 2730-7727; 2730-7727
• DOI: 10.1007/s43939-025-00340-5

Herein, we have reported the preparation, characterization, and acetone sensing properties of ZnO, 2%,5%, and 10% Na-doped ZnO samples synthesized using the microwave-assisted combustion method, aimed to enhance the sensitivity at low temperatures. The prepared samples were characterized using several characterization techniques to analyze their phase structure, crystallinity, and morphology. X-ray diffraction (XRD) analysis confirmed that the synthesized ZnO samples possess a well-crystalline hexagonal wurtzite crystal structure. The detailed experiments revealed that at an optimized temperature, i.e., ~ 50 °C, 5% Na-ZnO sample exhibited a significant sensitivity towards acetone concentrations of 100, 200, 300, 400, and 500 ppm with response value of ~ 39, ~54, ~ 100, ~214, and ~ 300% and the response and recovery time of ~ 442 /~62 s, respectively. The results indicate that 5% Na-ZnO samples have a high sensing response towards acetone at low operating temperatures.