Sol-Gel Derived ZnO: Nb₂O₅ Nanocomposite as Selective Hydrogen (H₂) Gas Sensor

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• 作者：G. Sarala Devi ; P. Siva Prasada Reddy ; K. Ramya
• 关键词：Sol-gel process ; Nanostructured ZnO ; Nb2O5 ; H2 Sensor
• 刊名：Materials Today: Proceedings
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：3
• 期：2
• 页码：224-229
• 全文大小：295 K

文摘

The present study investigates the incentive studies on phase transformations of ZnO: Nb₂O₅ nano composite, synthesized by sol gel protocol followed by impregnation process for sensing hydrogen gas. Detailed analyses of the synthesized nanomaterials were carried out by X-ray diffraction (XRD), transmission electron microscopy (TEM) and Particle size analysis. The material was subjected to different annealing temperatures ranging from 400°C to 800°C. The XRD result revealed the formation of single phase ZnNb₂O₆ at 700°C and above with average particle size of ∼ 67 nm. ZnO: Nb₂O₅ based sensor has shown enhanced gas sensing properties towards 1000 ppm H₂ gas.