Hierarchical assemblies of Si3N4 nanostructures |
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| Institution: | 1. School of Materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China;2. Key Laboratory of Advanced Materials Technology, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China;3. SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China;1. National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, PR China;2. School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, PR China;3. Key Laboratory of Microsystems and Micronanostructrues Manufacturing, Harbin Institute of Technology, Harbin 150080, PR China;1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2. Shanxi Academy of Medical Sciences and Shanxi Dayi Hospital, Taiyuan 030032, China;3. College of Materials Science and Engineering, Taiyuan University of Science and Technology, 030024, China |
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| Abstract: | In the present work, for the first time, we report the growth of hierarchical assemblies of Si3N4 nanostructures via catalyst-assisted pyrolysis of a polymeric precursor on the Si substrates. The synthesized products were characterized by using field emission scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. It is found that the size of the catalytic droplet plays a critical role on the formation of hierarchical assemblies of Si3N4 nanostructures rather than common single nanowire. A mechanism based on the Vapor–Liquid–Solid (VLS) process was proposed for the assembly of hierarchical Si3N4 nanostructures. |
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| Keywords: | Hierarchical assemblies Catalyst-assisted pyrolysis |
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