Selective Synthesis and Formation Mechanism of TiS2 Dendritic Crystals

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• 作者：Jingjing Ma ; Hua Jin ; Xiaoyang Liu ; Michael E. Fleet ; Jixue Li ; Xuejing Cao ; Shouhua Feng
• 刊名：Crystal Growth & Design
• 出版年：2008
• 出版时间：December 3, 2008
• 年：2008
• 卷：8
• 期：12
• 页码：4460-4464
• 全文大小：343K
• 年卷期：v.8,no.12(December 3, 2008)
• ISSN：1528-7505

文摘

High-purity TiS₂ dendritic crystals have been selectively synthesized via an easy and simple CVT (chemical vapor transport) process using only inorganic reagents. Reaction temperature and duration are the most important factors controlling the morphologies of TiS₂ dendrites. Instead of using organic reagents as templates to induce the self-assembly of inorganic molecules, a simple CVT process was adopted to realize the hierarchical self-assembly of inorganic molecules via transport in a sulfur-rich atmosphere far from thermodynamic equilibrium conditions. The phase structures and morphologies of the TiS₂ products were characterized by XRD, polarized-light microscopy, SEM, and TEM. All microscopic observations not only indicate a dendritic morphology but also provide direct evidence for the growth process of TiS₂ dendrites. The formation mechanism for TiS₂ fractals is further investigated and discussed on the basis of the experimental results.