A facile and environmentally friendly NaCl nonaqueous ionic liquid route to prepare crystalline ¦Â-CaSiO₃ nanowires

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• 作者：Wenzhong Wang ; ^{wzhwang@aphy.iphy.ac.cn} ; Suyun Zhang ; Lijuan Wang ; Honglong Shi
• 关键词：Biological materials ; Nanostructured materials ; Solid state reaction ; Crystal structure
• 刊名：Materials Science and Engineering: C
• 出版年：2013
• 出版时间：1 May, 2013
• 年：2013
• 卷：33
• 期：4
• 页码：2288-2293
• 全文大小：2005 K

文摘

We described an environmentally friendly and facile NaCl nonaqueous ionic liquid route for the first time to synthesize ¦Â-CaSiO₃ nanowires. ¦Â-CaSiO₃ nanowires were prepared by annealing precursor calcium silicate hydrate (CSH) nanostructures in NaCl nonaqueous ionic liquid, in which the precursor CSH nanostructures were first prepared by a facile one-step, solid state reaction, ground with both NaCl and surfactant nonyl phenyl ether (9) (NP-9), and heated at 850 ¡ãC for 2 h. ¦Â-CaSiO₃ nanowires were characterized by XRD, TEM and HRTEM. The comparative experiments have been conducted systemically to investigate the growth mechanism of ¦Â-CaSiO₃ nanowires, and the roles of salt NaCl nonaqueous ionic liquid and NP-9 on the formation of ¦Â-CaSiO₃ nanowires. The results demonstrated that both salt NaCl nonaqueous ionic liquid and surfactant NP-9 played key roles on the formation of ¦Â-CaSiO₃ nanowires. A rational growth mechanism of ¦Â-CaSiO₃ nanowires has been proposed on the basis of experimental results.