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Tunable Morphology of SrTiO3 Nanomaterials Controlled by Surfactant Concentration

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Microemulsion formed by the surfactant molecules has supplied us a wider range of possibilities in fabrication materials. Here, we report the controllable synthesis of SrTiO3 nanomaterials with tunable morphology by the hydrothermal method with the assistance of microemulsion science. In order to make clear the growth mechanism, the time-dependence morphology, size and growth process of SrTiO3 particles were studied. The results indicate that the crystallization process of SrTiO3 particles can be described as the nanoparticle-mediated crystallization, which is clearly affected by the concentration of surfactant. It is found the structure of microemulsion which is consisted of oleic acid can be tuned from spherical micelle to lamellar liquid structure with different concentration in a mixture of water and oil. The diffusion of primary SrTiO3 nanocrystals constrained in the confined space provided by the microemulsion, makes the oriented attachment of SrTiO3 nanoparticles available to form the nanoplate and nanocube.
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Keywords: Microemulsion; SrTiO3; Surfactant

Document Type: Research Article

Affiliations: 1: Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China 2: Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing 210023, China 3: Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong

Publication date: November 1, 2018

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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