TY - NEWS
TI - Effect of Calcination Temperature on the Behavior of the Agglomerated Co3O4 Nanoparticles Obtained Through the Sol–Gel Method
AU - Raba, Angela
AU - Cardenas-Flechas, L. J.
AU - Barba-Ortega, J.
AU - Rincón Joya, Miryam
AU - Moreno-Aldana, Luis Carlos
AB - gglomerates of Co3O4 were obtained using the sol–gel method for the synthesis with subsequent calcination of the samples up to 550 °C. Through X-rays it was observed that the samples presented the pure spinel phase with a crystallite size between 33.73 and 41.45 nm. In the thermogravimetric measurement from 262 °C high structural stability is presented with phase change at 917 °C. As the temperature increases, the particles increase in size, observing agglomerated nanometer particles that increase with temperature (3.5–3.8 μm). The 683 cm−1 Raman mode for 550 °C clearly presents an shifted compared to the other samples. The band gap for the samples under study varied with the temperature change of 1.77–1.81 eV. The FWHM decreases at a higher temperature, this confirms the larger crystallite size and the higher degree of sintering
DA - 2020-07-31
PB - Journal of Inorganic and Organometallic Polymers and Materials
UR - https://repositorio.ufps.edu.co/handle/ufps/1821
ER -