Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1641748 | Materials Letters | 2016 | 4 Pages |
Abstract
Here we report a study of ZnO nanorod array (ZNA) treated by twice low-temperature hydrothermal process with precursor solution of Zn(NO3)2·6H2O and C6H12N4 (1:1 M ratio) at varying concentrations. Thin and uniform ZnO nanorods were first grown on a substrate with a ZnO seed layer through a hydrothermal process with the concentration of precursor solution at 0.02 wt%. After a second hydrothermal process, they were transformed into distinct structures, dependent on the precursor concentration during the hydrothermal process. At higher precursor concentration (0.1 wt%), syringe needle-shaped nanocolumns with an inverted hexagonal pyramid head were obtained, while the high aspect ratio nanowires were formed at lower concentration (0.02 wt%). The probable transformation mechanisms of the ZNA associated with precursor concentration were proposed and discussed with SEM results.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Tingting Feng, Lang Wen, Dongxia Wang, Dan Xie, Mengqiang Wu,