Molten salt synthesis of SrTiO3 nanocrystals using nanocrystalline TiO2 as a precursor |
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| Authors: | Tian Xi Wang Shuang Zhi Liu Jun Chen |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China;2. College of Chemical Engineering, Kaifeng University, Kaifeng 475004, China;1. The Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing City, 100084, China;2. International Graduate School at Shenzhen, Tsinghua University, Shenzhen City, 518055, China;3. College of Materials Science and Hydrogen Energy, Foshan University, Foshan City, 528000, China;4. College of Wenzheng, Soochow University, Suzhou City, 215104, China;1. Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China;2. Science and Technology on Plasma Physics Laboratory, Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang, 621900, China;3. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Science, 72 Wenhua Road, Shenyang, 110016, China;1. Key Laboratory of Optical Field Manipulation of Zhejiang Province, and Key Laboratory of ATMMT Ministry of Education, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, PR China;2. Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, PR China;3. School of Medical and Pharmaceutical Engineering, Taizhou Vocational & Technical College Taizhou, People’s Republic of China;1. School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; Zhenjiang, Jiangsu 212018, China;2. Research Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan;1. Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai Ube, 755-8611, Japan;2. Department of Chemical System Engineering, The University of Tokyo, 7-3-1Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;3. Graduate School of Engineering, Toyota Technological Institute, 2-12-1Hisakata, Tempaku, Nagoya 468-8511, Japan |
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| Abstract: | A molten salt method was proposed to synthesize SrTiO3 nanocrystals in the eutectic NaCl–KCl at 700 °C for 6 h, by using the homemade TiO2 nanocrystals and commercial Sr(NO3)2 powder as raw materials. Besides, a control experiment with the commercial TiO2 submicron-sized crystallites as a precursor was also conducted. The structure and composition of the obtained products were characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The results from XRD and XPS revealed the preparation of pure cubic phase SrTiO3 powders. The TEM observation demonstrated that the nanocrystalline TiO2 precursor played an important role in the current molten salt synthesis of SrTiO3 nanocrystals, which were likely formed by the template formation mechanism. |
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