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A surfactant-free route to synthesize Ba x Sr1−x TiO3 nanoparticles at room temperature, their dielectric and microwave absorption properties

室温下无表面活性剂合成钛酸锶钡(Ba x Sr1−x TiO3)纳米晶及其介电和微波吸收性能研究

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Abstract

Perovskite materials, such as Ba x Sr1−x TiO3 (BST), have been continuously receiving attentions due to their unique ferroelectric, pyroelectric, dielectric, piezoelectric and electric-optic properties. Here, we report a facile route for the synthesis of BST nanocrystalline materials by fast mixing of MCl2 (M = Ba, Sr) aqueous solution and titanium isopropoxide ethanol solution at room temperature without using any surfactants or structure-directing templates. The molar ratio of Ba/Sr was controlled by adjusting the original molar ratio of BaCl2·2H2O and SrCl2·6H2O. The dielectric properties and microwave absorption capability of the BST nanocrystalline were studied. The results indicate that the BST nanocrystalline material has the best dielectric and microwave absorption properties in the case of Ba0.7Sr0.3TiO3. The present strategy is facile, low cost and high yield, which may provide a new route for the synthesis of other perovskite materials.

摘要

因其优异的铁电、焦热电、介电、压电和电-光性能, 钙钛矿材料, 尤其是钛酸锶钡(Ba x Sr1−x TiO3)受到了广泛且持续的关注. 本 文报道一种简易温和的方法, 通过快速混合氯化钡、氯化锶水溶液和异丙醇钛的乙醇溶液, 无需表面活性剂和结构指引模板, 在室温下静 置数小时即可制备钛酸锶钡(Ba x Sr1−x TiO3)纳米晶, 其中, 钡/锶的摩尔比可以通过改变氯化钡和氯化锶的初始投料比精确调控. 我们对产物 的介电性能和微波吸收性能进行了研究, 结果显示当x = 0.7时, 产物的介电性能和微波吸收性能达到最佳. 该合成方法条件温和、成本低 廉且产率很高, 也为其他钙钛矿材料的制备提供了一条可能的新途径.

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Authors and Affiliations

  1. Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Science at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China

    Qing-Song Wu  (吴庆松), Jian-Wei Liu  (刘建伟), Guang-Sheng Wang  (王广胜), Shao-Feng Chen  (陈绍锋) & Shu-Hong Yu  (俞书宏)

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  1. Qing-Song Wu  (吴庆松)
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  2. Jian-Wei Liu  (刘建伟)
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  3. Guang-Sheng Wang  (王广胜)
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  4. Shao-Feng Chen  (陈绍锋)
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  5. Shu-Hong Yu  (俞书宏)
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Corresponding authors

Correspondence to Jian-Wei Liu  (刘建伟) or Shu-Hong Yu  (俞书宏).

Additional information

Qing-Song Wu received his PhD degree in materials physics and chemistry under the supervision of Prof. Shu-Hong Yu from the University of Science and Technology of China (USTC) in 2009. He is interested in the synthesis and application of perovskite nanomaterials.

Jian-Wei Liu received his BSc degree in chemical engineering and technology fromHefeiUniversity of Technology in 2007, and his PhD degree in nano-chemistry under the supervision of Prof. Shu-Hong Yu from the USTC. He is interested in the synthesis and self-assembly of one dimensional nanomaterials as well as nano-device fabrication based on well aligned nanowires.

Shu-Hong Yu received his BSc atHefeiUniversity of Technology and his PhD degree (inorganic chemistry) fromthe USTC. He was a postdoctoral fellow with M. Yoshimura (Tokyo Institute of Technology) and a Humboldt Fellow with M. Antonietti and H. Cölfen (MPI of Colloids and Interfaces, Germany). In 2002, he was appointed the Cheung Kong Professor at USTC. Currently, he leads the Division of Nanomaterials & Chemistry at the Hefei National Laboratory for Physical Sciences at Microscale, USTC. His current research interests include bio-inspired synthesis and self-assembly of new nanostructured materials and nanocomposites, and their related properties. He serves as an editorial advisory board member of journals Accounts of Chemical Research, Chemistry of Materials, Chemical Science, Materials Horizons, Nano Research, ChemNanoMat, CrystEngComm, Part. Part. Syst. Charact. and Current Nanoscience. His recent awards include Chem. Soc. Rev. Emerging Investigator Award (2010) and Roy-Somiya Medal of the International Solvothermal and Hydrothermal Association (ISHA) (2010).

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40843_2016_5072_MOESM1_ESM.pdf

A surfactant-free route to synthesize Ba x Sr1−x TiO3 nanoparticles at room temperature, their dielectric and microwave absorption properties

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Wu, QS., Liu, JW., Wang, GS. et al. A surfactant-free route to synthesize Ba x Sr1−x TiO3 nanoparticles at room temperature, their dielectric and microwave absorption properties. Sci. China Mater. 59, 609–617 (2016). https://doi.org/10.1007/s40843-016-5072-5

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