Journal
CRYSTENGCOMM
Volume 16, Issue 30, Pages 6873-6881Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ce00001c
Keywords
-
Categories
Funding
- National Natural Science Foundation of P.R. China [21071005, 21271006, 21105001]
- Research Culture Funds of Anhui Normal University [2011rcpy038]
- university students' innovative undertaking training program [201310370080, 201310370085]
- Natural Science Foundation of Anhui Province [1208085QE102]
- Natural Science Foundation of the Anhui Higher Education Institutions of China [KJ2013B305, KJ2010B250]
- Doctoral Research Initial Foundation of Wannan Medical College [201221]
Ask authors/readers for more resources
Self-assembly of crystalline alpha-Fe2O3 nanoplates into columnar one dimensional superstructures (CODS) was achieved in high yield by a simple hydrothermal route in the presence of glycerin. The alpha-Fe2O3 micro-/nanocrystals with controllable sizes and morphologies, such as nanospheres, nanoparticles, polyhedrons and plates, were also synthesized by this facile process. Contrast experiments indicated that the glycerin not only acted as a structure-directing agent for controlling growth of alpha-Fe2O3 plates but also played a role in assembling alpha-Fe2O3 individual plates into columnar superstructures. Based on the time-dependent experiments, a reasonable growth mechanism of alpha-Fe2O3 CODS has been proposed. The obtained alpha-Fe2O3 crystals displayed ferromagnetic behavior and their magnetic properties were dependent on their sizes and shapes. Furthermore, the coercivity values of the alpha-Fe2O3 single microplates (similar to 2.5 mu m in diameter) and CODS (similar to 2.2 mu m in length) were high up to 1872.6 Oe and 889.7 Oe, respectively. In addition, gas sensors based on plate-like alpha-Fe2O3 and their CODS exhibited high sensitivity for ethanol and formaldehyde, respectively.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available