棒状Pd/FeVO4粉体的制备及其气体敏感性能研究的探究性实验设计

Exploratory Experimental Design Based on Synthesis and Gas Sensitive Property Research of Rod-like Pd/FeVO4 Powders

  • 摘要: 棒状Pd/FeVO4粉体的制备及其气体敏感性能的探究性实验是一个新型的实验课程。通过低温水热-化学还原法制备了棒状Pd/FeVO4粉体,对样品的晶体结构、形貌、元素组成进行了表征,并研究了其对苯甲醇气体的气敏性能。实验结果显示,Pd纳米颗粒修饰的FeVO4粉体气敏性能得到了明显的提升。实践表明,该实验涵盖知识点多,综合了一维纳米材料的低温化学法制备、结构表征和半导体材料物理性能测试及研究等基本实验技能,有利于培养学生综合运用知识并进行科学研究的精神及团队协作能力,可作为陕西师范大学物理学院创新班的探究性实验内容。

     

    Abstract: The preparation of rod-shaped Pd/FeVO4 powder and its gas sensitivity performance investigation experiment is a new experimental course. The rod-shaped Pd/FeVO4 powder was prepared by low temperature hydrothermal-chemical reduction method. The crystal structure, morphology and elemental composition of the samples were characterized. The gas sensing properties of benzyl alcohol gas were also studied. The experimental results show that the gas sensitivity of Pd nanoparticles modified FeVO4 powder has been significantly improved. Practice shows that the experiment covers a wide range of knowledge, comprehensive basic experimental skills such as low temperature chemical preparation, structural characterization and physical properties testing and research of semiconductor materials. It is conducive to cultivating students’ ability to comprehensively apply knowledge and conduct scientific research. It can be used as an exploratory experiment for the innovation class of Physics College of our university.

     

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