The effect of Vanadium Addition on the Characteristics of LaCrO3 nanomaterial
Rudy Situmeang1,*, Lia Purniasari1, Harist Oktavian1 ,Elsina Azmi1, Simon Sembiring2
1 Department of Chemistry, University of Lampung, Indonesia
2 Department of Physics, University of Lampung, Indonesia
Abstract
Lanthanum chromite is a material that plays a large role in the development of fuel cells, catalysts, electronic devices, semiconductors and magnetics. The application of this compound is determined by the material characteristics. The LaCr1-xVxO3 compound was prepared using a simultaneously method of sol-gel and freeze-drying from salts of chrome, lanthanum, and vanadium in pectin solution. The characterization results using X-ray diffraction, diffuse-reflectance UV-Vis spectrophotometer, and SEM-EDS showed that the materials formed have the main structure of ABO3 perovskite (such as LaCrO3 and LaVO3) with minor phases of LaCr2O6 and LaVO4 while the band-gap energy of materials due to the addition of vanadium in LaCrO3, it shifts its energy to a lower direction, namely: 2.89; 2.3; 2.4; 2.5 eV for LaCr1-xVxO3 (where x = 0, 0.1, 0.3, and 0.5), respectively. Then, SEM micrographs showed that the distribution of the crystalline phase is fairly even and homogeneous.
Keywords: Perovskite, nanomaterial, band-gap energy, well distribution
Topic: Nano-materials and applications