TY - JOUR
T1 - Low-temperature fabrication of Mn 3O 4 nanorods by solid-state decomposition of exfoliated MnO 2 nanosheets
AU - Lee, Na Ra
AU - Jung, Hyun
PY - 2012/12
Y1 - 2012/12
N2 - A novel synthetic route has been developed to prepare manganese oxide nanorods. Using unilamellar manganese dioxide (MnO 2) nanosheets as starting materials, we succeeded in obtaining hausmannite (Mn 3O 4) nanorods. The starting materials, exfoliated manganese dioxide nanosheets, were obtained by intercalation and delamination reaction of the protonic manganese dioxide with the tetrabutylammonium (TBA) cation. The transformation of layered MnO 2 nanosheets to Mn 3O 4 nanorods was achieved by simple pH control and a calcination process, even at a temperature of about 150 °C. Physicochemical characterization and studies of the mechanism of transformation were done using X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), high-resolution transmission electron microscopy (HR-TEM) and field emission scanning electron microscopy (FE-SEM). The components of the reaction and the thermal behavior of the sample were measured by elemental analysis (EA), Fourier transform infrared (FT-IR) spectroscopy and thermal analysis, including thermogravimetry (TG) and differential thermal analysis (DTA).
AB - A novel synthetic route has been developed to prepare manganese oxide nanorods. Using unilamellar manganese dioxide (MnO 2) nanosheets as starting materials, we succeeded in obtaining hausmannite (Mn 3O 4) nanorods. The starting materials, exfoliated manganese dioxide nanosheets, were obtained by intercalation and delamination reaction of the protonic manganese dioxide with the tetrabutylammonium (TBA) cation. The transformation of layered MnO 2 nanosheets to Mn 3O 4 nanorods was achieved by simple pH control and a calcination process, even at a temperature of about 150 °C. Physicochemical characterization and studies of the mechanism of transformation were done using X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), high-resolution transmission electron microscopy (HR-TEM) and field emission scanning electron microscopy (FE-SEM). The components of the reaction and the thermal behavior of the sample were measured by elemental analysis (EA), Fourier transform infrared (FT-IR) spectroscopy and thermal analysis, including thermogravimetry (TG) and differential thermal analysis (DTA).
KW - A. Nanostructure
KW - B. Chemical synthesis
KW - C. X-ray diffraction
KW - D. Phase transitions
UR - http://www.scopus.com/inward/record.url?scp=84867581331&partnerID=8YFLogxK
U2 - 10.1016/j.jpcs.2011.12.029
DO - 10.1016/j.jpcs.2011.12.029
M3 - Article
AN - SCOPUS:84867581331
SN - 0022-3697
VL - 73
SP - 1473
EP - 1477
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 12
ER -