论文部分内容阅读
通过简单的、低耗的水热合成方法,以Y2O3为原料,在无模板条件下大规模地制备了氢氧化钇纳米管,采用X射线粉末衍射(XRD)、扫描电镜(SEM)和能谱(EDS)测试技术对合成产物进行了物相、形貌和成分的表征.氢氧化钇纳米管内径为200～300nm,外径为400～500nm,壁厚为100～200nm,分散性好.研究了几种关键因素对氢氧化钇纳米管合成的影响.结果表明:水热法制备氢氧化钇纳米管材料的最佳合成条件是乙醇和水的体积比为1∶2;采用氢氧化钠溶液调节反应体系pH值为11~12;反应温度为220℃、反应时间为24h.
Yttrium hydroxide nanotubes were prepared on a large scale without template by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (XRD) using simple and low-cost hydrothermal synthesis method. (EDS) was used to characterize the phase, morphology and composition of the synthesized product.The inner diameter of yttrium hydroxide nanotubes was 200-300 nm, the outer diameter was 400-500 nm, the wall thickness was 100-200 nm, and the dispersion was good. The effects of several key factors on the synthesis of yttrium hydroxide nanotubes were investigated.The results showed that the optimum synthesis conditions for the preparation of yttrium hydroxide nanotubes by hydrothermal method were as follows: the volume ratio of ethanol to water was 1: 2; using sodium hydroxide solution Adjust the pH value of the reaction system is 11 ~ 12; the reaction temperature is 220 ℃, the reaction time is 24h.