Qi Jian Quan, Guo Rui, Wang Yu, Liu Xuan Wen, Chan Helen Lai Wah
School of Materials Science and Natural resources, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, Hebei Province, People's Republic of China.
Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hung Hom, Hong Kong.
Nanoscale Res Lett. 2016 Dec;11(1):120. doi: 10.1186/s11671-016-1338-4. Epub 2016 Mar 1.
The role of electric field is investigated in determining the structure, morphology, and crystallographic characteristics of CaCO3 nanostructures crystallized from solution. It is found that the lattice structure and crystalline morphology of CaCO3 can be tailed by the electric field applied to the solution during its crystallization. The calcite structure with cubic-like morphology can be obtained generally without electric field, and the vaterite structure with the morphology of nanorod is formed under the high electric field. The vaterite nanorods can be piled up to the petaliform layers. Both the nanorod and the petaliform layer can have mesocrystal structures which are piled up by much fine units of the rods with the size of several nanometers. Beautiful rose-like nanoflowers can be self-arranged by the petaliform layers. These structures can have potential application as carrier for medicine to involve into metabolism of living cell.
研究了电场在确定从溶液中结晶的碳酸钙纳米结构的结构、形态和晶体学特征方面的作用。研究发现，碳酸钙的晶格结构和晶体形态可以通过在溶液结晶过程中施加的电场来调控。通常在无电场的情况下可获得具有立方状形态的方解石结构，而在高电场下会形成具有纳米棒形态的球霰石结构。球霰石纳米棒可以堆积成花瓣状层。纳米棒和花瓣状层都可以具有介晶结构，这些介晶结构是由许多几纳米大小的细棒单元堆积而成的。花瓣状层可以自组装成美丽的玫瑰状纳米花。这些结构作为药物载体参与活细胞代谢具有潜在应用价值。
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