期刊
ACS NANO
卷 10, 期 1, 页码 405-412出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b05108
关键词
oriented attachment; 3D superstructures; crystal growth; pressure; SnO2
类别
资金
- NSFC [51102151, 51372143, 50990061, 21073107]
- Natural Science Foundation of Shandong Province [ZR2011EMQ002, 2013GGX10208]
- Independent Innovation Foundation of Shandong University [2012GN051]
Oriented attachment (OA), a nonclassical crystal growth mechanism, provides a powerful bottom-up approach to obtain ordered superstructures, which also demonstrate exciting charge transmission characteristic. However, there is little work observably pronouncing the achievement of 3D OA growth of crystallites with large size (e.g., submicrometer crystals). Here, we report that SnO2 3D ordered superstructures can be synthesized by means of a self-limited assembly assisted by OA in a designed high-pressure solvothermal system. The size of primary building blocks is 200-250 nm, which is significantly larger than that in previous results (normally <10 nm). High pressure plays the key role in the formation of 3D configuration and fusion of adjacent crystals. Furthermore, this high-pressure strategy can be readily expanded to additional materials. We anticipate that the welded structures will constitute an ideal system with relevance to applications in optical responses, lithium ion battery, solar cells, and chemical sensing.
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