纳米三氧化钨的水热合成及其性能研究
发布时间:2018-02-10 01:29
本文关键词: 三氧化钨 硫脲 菱形结构 气敏 出处:《化工新型材料》2017年09期 论文类型:期刊论文
【摘要】:以钨酸为前驱体,利用水热合成法制备出纳米三氧化钨粉体,通过透射电子显微镜(TEM)对合成产物进行了结构表征,前驱体钨酸的制备温度对纳米三氧化钨的形貌有较大影响,钨酸的制备温度为60℃时合成出具有纳米尺寸的菱形结构。比较不同条件下制备的纳米三氧化钨的气敏性能,随着乙醇和丙酮浓度的升高,它们的输出电压均呈现出上升的趋势,80℃下制备的钨酸水热合成的纳米三氧化钨不具有稳定的电压,具有菱形结构的纳米三氧化钨材料具备优异的气敏性能。
[Abstract]:Nanocrystalline tungsten trioxide powder was prepared by hydrothermal synthesis with tungstic acid as the precursor. The structure of the synthesized product was characterized by transmission electron microscopy (TEM). The preparation temperature of the precursor tungsten acid has a great influence on the morphology of nano-tungsten trioxide. The diamond-shaped structure with nanometer size was synthesized at the preparation temperature of 60 鈩,
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