Inorganic Chemicals Industry >
Preparation and formation mechanism of hollow barium titanate
Received date: 2020-08-14
Online published: 2021-02-06
Barium titanate powders with tetragonal phase polymorph and hollow morphology were successfully synthesized by hydrothermal synthesis using titanium dioxide（TiO2） and eight hydrated barium hydroxide [Ba（OH）2·8H2O] as raw materi-als.The morphologies,structure and polymorph of the products were characterized by transmission electron microscopy（TEM）and X-ray diffraction（XRD）,and the formation mechanism of hollow barium titanate were discussed in detail through the study of the dynamic change of the structure and polymorph of barium titanate powders with time in the reaction process.Effects of different reaction temperature and barium concentration on the crystallization and growth of barium titanate were also investigated.Results showed that the reaction temperature and the barium concentration affected the crystal structure and morphology of barium titanate powders,and then the formation mechanism of hollow barium titanate was proposed.Under the conditions of reaction temperature of 180 ℃ and barium concentration of 3.0 mmol/L,uniform particle size distribution of hol-low barium titanate powders with tetragonal phase polymorph could be obtained.
Key words： hollow barium titanate; crystallization; titanium dioxide
Yali Wu , Yihan Wu , Ruimin Zhang , Xiaoyu Shi , Xin Dong . Preparation and formation mechanism of hollow barium titanate[J]. Inorganic Chemicals Industry, 2021 , 53(2) : 51 -54 . DOI: 10.11962/1006-4990.2020-0141
| [1] | Zhang Lei, Wen Jiaxin, Zhang Zixi, et al. Enhanced dielectric pro-perties of BaTiO3 based on ultrafine powders by two stepcalcina-tion[J]. Physica B: Condensed Matter., 2019,560:155-161. |
| [2] | Bi Meihua, Hao Yanan, Zhang Jiameng, et al. Particle size effect of BaTiO3 nanofillers on the energy storage performance of polymer nanocomposites[J]. Nanoscale, 2017,42(9):16386-16395. |
| [3] | Gomes M A, Lima A S, Eguiluz K I B, et al. Wet chemical synjournal of rare earth-doped barium titanate nanoparticles[J]. Journal of Ma-terials Science, 2016,51(10):4709-4727. |
| [4] | 左悦, 成明亮, 张康, 等. BaTiO3/NiFe2O4/PANI三元纳米复合材料的制备及吸波性能研究[J].化工新型材料, 2019(7):125-129. |
| [5] | 展红全, 邓册, 吴传琦, 等. 新颖十二面体钛酸钡纳米晶体的水热生长机理[J]. 材料导报, 2019,33:98-101. |
| [6] | Bowland, C C, Sodano, H A. Hydrothermal synjournal of tetragonal phase BaTiO3 on carbon fiber with enhanced electromechanical coupling[J]. Journal of Materials Science, 2017,52(13):7893-7906. |
| [7] | 章秋晨, 朱归胜, 徐华蕊, 等. 微波固相法合成四方相钛酸钡纳米粉体[J]. 功能材料, 2019,50(7):7008-7016. |
| [8] | 凌云, 江伟辉, 刘健敏, 等. 非水解溶胶-凝胶法低温合成钛酸钡粉体[J]. 人工晶体学报, 2016,12:2801-2806. |
| [9] | Simon-Seveyrat L, Hajjaji A, Emziane Y, et al. Re-investigation of synhesis of BaTiO3 by conventional solid-state reaction and oxalate coprecipitation route for piezoelectric applications[J]. Ceramics In-ternational, 2007,33(1):35-40. |
| [10] | 徐军, 许杰, 孔旗. 钛酸钡和十三钛酸钡的水热法合成[J]. 武汉工程大学学报, 2015,37(6):42-45. |
| [11] | Pithan C, Hennings D, Waser R. Progress in the synjournal of nano-crystalline BaTiO3 powders for MLCC[J]. International Journal of Applied Ceramic Technology. 2005,2(1):1-14. |
| [12] | 展红全, 罗志云, 李小红, 等. 钛酸钡纳米粉体的水热合成研究[J]. 中国陶瓷, 2015,51(4):13-16. |
| [13] | 范海龙, 朱归胜, 徐华蕊, 等. 常压水热合成钛酸钡纳米粉体的微波煅烧性能[J]. 桂林电子科技大学学报, 2019,39(5):420-424. |
| [14] | 戴梦炜, 王芸, 潘茂植, 等. 空心/多孔微球制备技术研究进展[J]. 材料导报, 2013,27(5):80-86. |
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