Localized crystallization: a chemical transformation of Nb2O5 rod-like arrays into ordered niobate arrays
Localized crystallization: a chemical transformation of Nb2O5 rod-like arrays into ordered niobate arrays
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DOI：
10.1039/c0ce00449a
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发表时间：
2011-03
期刊：
影响因子：
3.1
通讯作者：
Junshu Wu;D. Xue
中科院分区：
文献类型：
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作者：
Junshu Wu;D. Xue
含铌（Nb）薄膜的各种应用的关键限制是缺乏用于有效地产生大规模有序阵列的显著经济、简单和通用的方法。我们使用了良好的对齐Nb2O5棒状阵列作为牺牲前体，以展示如何通过局部结晶过程可以获得广泛的铌酸盐阵列。通过碱溶液与固体Nb2O5模板之间的动态可控界面反应，选择性地晶化了NaNb3O8微管阵列、NaNbO3微棒阵列和新相K2Nb2O6微管阵列。目前的低温水热合成被证明是简单和技术灵活的形状和结构控制的氧化物表面结构。最重要的是，高度有序的Nb基二元和三元氧化物阵列的化学合成提供了更深入的理解结晶行为在一个化学模板过程中，也是一个成功的化学策略结晶更多的碱金属或碱土金属复合氧化物薄膜具有很大的技术重要性。
A key limitation for various applications of niobium (Nb)-containing thin films is the lack of remarkably economic, simple and versatile methods for effectively generating large-scale ordered arrays. We used well-aligned Nb2O5 rod-like arrays as a sacrificial precursor to demonstrate how a wide range of niobate arrays can be obtained through a localized crystallization process. NaNb3O8 microtube arrays, NaNbO3 microrod arrays, and new-phase K2Nb2O6 microtube arrays were selectively crystallized by dynamically controllable interfacial reactions between alkali solution and solid Nb2O5 template. The current low-temperature hydrothermal synthesis was proved straightforward and technically flexible for the shape- and structure-control of oxide surface architectures. Most importantly, the chemical synthesis of highly ordered Nb-based binary and ternary oxide arrays provided a much deeper understanding of crystallization behaviour during a sacrificial-templating process and also a successful chemical strategy for crystallizing more alkali or alkaline earth metal complex oxide films with great technological importance.