锆钛纳米氧化物的结构与性能研究

发布时间：2018-03-15 04:32

  本文选题：复合氧化物　切入点：氧化锆　出处：《河北工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：通过真空熔炼法制备出不同锆铁比的合金,将锆铁合金阳极氧化制备锆铁氧化物纳米管。利用SEM、XRD、VSM、XPS、UV-Vis等测试方法对所制备的纳米管的形貌、结构、磁学性能及吸附性能等进行了研究;采用共沉淀法制备不同比例的锆铁纳米粉体和钛铁纳米粉体,对其性能进行了测试,并与纳米管的性能进行了对比。1.在甲酰胺与甘油的体积比为1:1、含1wt%去离子水和1wt%NH4F的电解液中,采用阳极氧化法制备出形貌良好的锆铁复合氧化物纳米管,研究了铁含量对晶化温度和晶体结构的影响。结果表明,随着铁掺杂量的增加晶化温度从400℃提高到600℃,晶粒粒径变小,四方相含量逐渐增加。2.对锆铁氧化物纳米管阵列的磁学性质进行了研究,并探讨了不同退火温度对磁学性能的影响,研究发现退火温度不同时样品的磁学性能有很大变化。3.对复合氧化物纳米管的带隙和吸附性能进行了研究,结果发现随着铁掺杂量的增加吸收带边发生了红移现象,对Cr6+的吸附性能比单一氧化物纳米管有所提高。4.与单一的氧化锆与氧化铁相比,锆铁复合氧化物纳米粉体的晶化温度提高,晶粒粒径变小。随铁含量增加,复合氧化物磁性增强,当锆铁原子比为1:2和1:3时,复合氧化物的矫顽力与氧化铁相近,剩磁和饱和磁化强度明显大于氧化铁。复合氧化物对Cr6+的吸附性能随锆铁比而改变,但优于锆铁复合氧化物纳米管,也优于氧化锆和氧化铁。5.研究了退火温度对钛铁复合氧化物粉体吸附性能的影响,未退火的钛铁复合氧化物粉体的吸附性能优于550℃退火的样品。
[Abstract]:Zirconium iron oxide nanotubes were prepared by anodic oxidation of zirconium iron alloy by vacuum melting method. The morphology and structure of the prepared nanotubes were measured by means of SEMXRDX VSMX XPSN UV-Vis, etc. The magnetic properties and adsorption properties of ferrozirconium and iron titanate nanocrystalline powders were prepared by coprecipitation method and their properties were tested. The properties of nanotubes were compared with that of nanotubes. In the electrolyte containing 1wt% deionized water and 1wtNH4F in the volume ratio of formamide to glycerol, zirconium iron composite oxide nanotubes with good morphology were prepared by anodic oxidation method. The effect of iron content on the crystallization temperature and crystal structure is studied. The results show that the grain size becomes smaller with the increase of Fe doping content from 400 鈩，

本文编号：1614469