Nanorod-direct oriented attachment growth and promoted crystallization processes evidenced in case of ZnWO4
Nanorod-direct oriented attachment growth and promoted crystallization processes evidenced in case of ZnWO4
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DOI：
10.1021/jp037129q
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发表时间：
2004-02
影响因子：
3.3
通讯作者：
Biao Liu;Shuhong Yu;Linjie Li;Fen Zhang;Qiao Zhang;M. Yoshimura;P. Shen
中科院分区：
文献类型：
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作者：
Biao Liu;Shuhong Yu;Linjie Li;Fen Zhang;Qiao Zhang;M. Yoshimura;P. Shen
在回流条件或温和水热条件下，单晶ZnWO4纳米棒可以指导非晶纳米颗粒的自聚集，促进纳米棒/非晶纳米颗粒共存体系中简单过饱和沉淀反应产生的非晶纳米颗粒的结晶和转变过程。在该体系中，明显观察到ZnWO4的纳米棒-直接外延聚集过程，而不是传统的Ostwald成熟过程。这一发现可能适用于各种氧化物体系，甚至非氧化物体系。这种由良好结晶的纳米棒诱导的自发自聚集和结晶可以为改善各向异性材料的性能提供独特的途径，因为它们由微小的纳米颗粒构建块组成的粗糙表面结构，可以用于形成更复杂的晶体三维结构，其中分支位点可以作为单独的分支位点添加。
Single-crystal ZnWO4 nanorods can direct the self-aggregation of the amorphous nanoparticulates and promote the crystallization and transformation process of the amorphous nanoparticulates derived from a simple supersaturation precipitation reaction in a nanorod/amorphous nanoparticle coexisting system under refluxing conditions or mild hydrothermal conditions. In this system, the obvious nanorod-direct epitaxial aggregation process in the case of ZnWO4 was clearly observed instead of the traditional Ostwald ripening process. This finding could be universal to various oxide systems or even non-oxide systems. Such spontaneous self-aggregation and crystallization induced by the well-crystallized nanorods could provide a unique route for improving the property of an anisotropic material due to their rough surface structures made of tiny nanoparticle building blocks and could be used for the formation of more complex crystalline three-dimensional structures in which the branching sites could be added as indiv...