Synthesis of La2(MoO4)3: electrocatalytic activity for the oxygen evolution in alkaline media

La-Mo oxides were synthesised by heating the powder, obtained from the reaction of lanthanum nitrate with molybdenum carbonyl in organic media, at 573 K for 2 h. The structure, morphology and chemical composition were determined by oxygen determination, atomic absorption spectrometry, X-ray diffract...

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Bibliographic Details
Published in:International journal of hydrogen energy 1998, Vol.23 (11), p.999-1003
Main Authors: Gonzalez-rojas, G.P, Bonifacio-martinez, J, Ordoñez-Regil, E, Fernandez-valverde, S.M
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Energy
Exact sciences and technology
Fuels
Hydrogen
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Summary:La-Mo oxides were synthesised by heating the powder, obtained from the reaction of lanthanum nitrate with molybdenum carbonyl in organic media, at 573 K for 2 h. The structure, morphology and chemical composition were determined by oxygen determination, atomic absorption spectrometry, X-ray diffraction and scanning electron microscopy. The results showed an amorphous structure. After heating the compound in vacuum, we obtained the X-ray diffraction pattern of La 2(MoO 4) 3. The electrochemical behaviour of the La–Mo oxides was determined in KOH 0.5 M. In the range 700–1000 mV vs Hg/HgO/KOH 0.5 M electrode, the results showed a very good performance for the oxygen evolution reaction.
ISSN:0360-3199
1879-3487
DOI:10.1016/S0360-3199(98)00018-4