微波溶剂热合成增强钇稳定四方氧化锆纳米粉体分散性的研究

IF 0.8 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Nano Research Pub Date : 2022-07-12 DOI:10.4028/p-rk18uy

Haifeng Li, Guangxin Wang, M. Guo, Haoyan Cheng, Hao Hu, Zihan Lin, X. He

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引用次数: 1

摘要

采用微波溶剂热法(MSM)合成了钇稳定的四方氧化锆(y0.08 zr0.940 o2, YSZ)纳米粉体。对合成温度、保温时间和矿化剂浓度进行了优化。采用DSC/TG、XRD、FESEM、TEM、FTIR、DLS、BET等方法对制备的YSZ纳米粉体的结晶和颗粒分布进行了表征。对不同干燥方法和聚乙烯亚胺(PEI)改性的YSZ纳米粉体的分散性进行了分析和讨论。结果表明，PEI改性后的样品分散性最好，冷冻干燥后的样品分散性优于传统干燥后的样品。BET测定的PEI改性样品表面积计算得到的粒径为15.7 nm，与TEM测定的16.5 nm一致，但略小于XRD测定的Scherrer公式计算得到的22.3 nm。这可能归因于这些方法中不同的测试原则。

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Enhancing Dispersion of Yttria-Stabilized Tetragonal Zirconia Nanopowders with Microwave Solvothermal Synthesis

Yttria stabilized tetragonal zirconia (Y0.08Zr0.94O2, YSZ) nanopowders were successfully synthesized by microwave solvothermal method (MSM). The synthesizing temperature, holding time and mineralizer concentration were optimized. The crystallization and particle distribution of as-prepared YSZ nanopowders were identified by DSC/TG, XRD, FESEM, TEM, FTIR, DLS, and BET. The dispersion of YSZ nanopowders dried by different methods and modified by polyethyleneimine (PEI) was analyzed and discussed. The results show that the PEI modified samples have the best dispersion, and the dispersion of freeze-dried samples is better than that of traditional dried ones. The particle size of the PEI modified samples calculated from the surface area determined by BET is 15.7 nm, which is consistent with that determined by TEM (16.5 nm), but slightly smaller than that calculated by the Scherrer formula according to XRD (22.3 nm). This may be attributed to the different testing principles in these methods.

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来源期刊

Journal of Nano Research 工程技术-材料科学：综合

CiteScore

2.40

自引率

5.90%

发文量

审稿时长

4 months

期刊介绍： "Journal of Nano Research" (JNanoR) is a multidisciplinary journal, which publishes high quality scientific and engineering papers on all aspects of research in the area of nanoscience and nanotechnologies and wide practical application of achieved results. "Journal of Nano Research" is one of the largest periodicals in the field of nanoscience and nanotechnologies. All papers are peer-reviewed and edited. Authors retain the right to publish an extended and significantly updated version in another periodical.