K. Q. Zhou, J. J. Liu, P. Y. Wen, Y. Hu and Z. Gui (2015) Morphology-controlled synthesis of Co3O4 by one step template-free hydrothermal method. Journal/Materials Research Bulletin 67 87-93. [In English]
Web link: http://dx.doi.org/10.1016/j.materresbull.2015.03.006
Keywords: Nanostructures; Semiconductors; Solvothermal; Transmission electron; microscopy (TEM); Optical properties; COBALT OXIDE CATALYSTS; GAS-SENSING PROPERTIES; LITHIUM-ION BATTERIES; MAGNETIC-PROPERTIES; POROUS CO3O4; OXIDATION; TEMPERATURE; NANOSTRUCTURES; NANOPARTICLES; NANOCRYSTALS
Abstract: We had developed a facile synthetic route of Co3O4 crystals with different morphologies via one step template-free hydrothermal method. The phase and composition of the Co3O4 were investigated by X-ray powder diffraction and Raman spectrum. The morphology and structure of the synthesized samples were characterized by scanning electron microscopy and transmission electron microscopy. The H2O2 played a crucial role in morphological control of Co3O4 nanostructures. It only obtained Co-based precursor in the absence of H2O2. On the contrary, the Co3O4 with different morphologies including nanoparticles, nano-discs and well-defined octahedral nanostructures were synthesized in the presence of H2O2. In addition, the optical property of the obtained Co3O4 samples was investigated by UV-vis spectra. (C) 2015 Published by Elsevier Ltd.