Synthesis and characterization of LaCr(1-x)MoxO3

LaCrO3 is a well known perovskite compound utilizing as semiconductors, catalysts, fuel cell, electronic devices, and others. In this preliminary study, the properties of LaCrO3 added by varying Mo contents were examined. TheLaCr(1-x)MoxO3 (with x=0.01 and 0.03) were synthesized by sol-gel pectin me...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-06, Vol.1572 (1)
Main Authors: Yuliarni, T, Situmeang, R T M, Simanjuntak, W, Ratri, C R
Format: Article
Language:English
Subjects:
Ammonium molybdate
Crystallites
Electronic devices
Fuel cells
Lanthanum oxides
Pectin
Perovskites
Physics
Sol-gel processes
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Summary:LaCrO3 is a well known perovskite compound utilizing as semiconductors, catalysts, fuel cell, electronic devices, and others. In this preliminary study, the properties of LaCrO3 added by varying Mo contents were examined. TheLaCr(1-x)MoxO3 (with x=0.01 and 0.03) were synthesized by sol-gel pectin method using La, Cr nitrate, and ammonium molybdate as precursors, freeze-dried, and followed by calcination at 700 °C for 3 hours. The prepared materials were characterized using XRD, TEM, and DRS. The formation of the compounds for x=0.01 are La2Mo2O9, LaCrO3, and Cr2O3, and for x=0.03 are La2Mo2O9, LaCrO3, and La2O3. The crystallite sizes were determined using Scherrer formula and they are found to be 24 nm (x=0.01) and 33 nm (x=0.03). The TEM images showed that the obtained grains size was in the range of 24 nm (x=0.01) and 34 nm (x=0.03). The bandgap values are 2.59 eV for x=0.01 and 2.68 eV for x=0.03.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1572/1/012064