Fig.4: PSA graph of a) sample LCU1(—) and sample LCU2( ).
Morphologies of LaCoO3 synthesized with the sol-gel
Auto-combustion method by glycine and urea as fuel are presented in
Fig.5 (a-b) and Fig.6 (a-b), respectively. The SEM images show nonporous
nature of the synthesized perovskite particles with spherical shape in
all samples. The porous nature can be due to the nitrate precursors
because burning of the nitrates at higher temperature may lead to the
porous structures.