Shape evolution of zinc oxide from twinned disks to single spindles through solvothermal synthesis in binary solvents |
| |
Authors: | Aisheng Huang Jürgen Caro |
| |
Institution: | Institute of Physical Chemistry and Electrochemistry, Leibniz University of Hannover, Callinstraße 3-3A, D-30167 Hannover, Germany |
| |
Abstract: | Shape evolution of ZnO crystals from twinned disks to single spindles was studied through solvothermal synthesis in binary solvents N,N-diethylformamide (DEF) and methanol (MeOH). The MeOH content in DEF had large influence on the morphology of the obtained ZnO crystals. In MeOH-free DEF, well-shaped ZnO twinned disks with perfect mirror symmetry could be formed through the assembly of ZnO46−–julolidinium–ZnO46− growth units on the (0 0 0 1) growth interfaces. For small amounts of MeOH (MeOH/DEF=0.04), elongated twinned disks were formed since the growth along the polar c-axis was enhanced. With increasing MeOH content (MeOH/DEF=0.1), twinned rods with reduced mirror symmetry were formed. When a large amount of MeOH was added to DEF (MeOH/DEF=0.5), single spindles rather than twinned disks or twinned rods were obtained. A similar shape evolution of zinc oxide was observed in binary solvents DEF and N,N-dimethylformamide (DMF), suggesting that the growth of ZnO crystals with tuneable shape and size can be controlled by the composition of the binary solvent mixture. |
| |
Keywords: | A1 Crystal morphology A1 Crystal structure A2 Growth from solutions A2 Single crystal growth B1 Inorganic compounds |
本文献已被 ScienceDirect 等数据库收录! |
|