Averrhoa carambola: A Renewable Source of Oxalic Acid for the Facile and Green Synthesis of Divalent Metal (Fe, Co, Ni, Zn, and Cu) Oxalates and Oxide Nanoparticles

A green, simple, and environmentally benign synthetic approach has been utilised to obtain some bivalent metal oxalates from Averrhoa carambola juice extract, without any purification or special treatment of the juice. The main acid components (oxalic acid and ascorbic acid) of the juice were identi...

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Published inJournal of Applied Chemistry (Hindawi) Vol. 2014; pp. 1 - 9
Main Authors Nguefack Marius Borel, Nguimezong, Foba-Tendo, Josepha, Yufanyi, Divine Mbom, Peter Etape, Ekane, Eko, Jude Namanga, John Ngolui, Lambi
Format Journal Article
LanguageEnglish
Published Hindawi Publishing Corporation 17.09.2014
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Summary:A green, simple, and environmentally benign synthetic approach has been utilised to obtain some bivalent metal oxalates from Averrhoa carambola juice extract, without any purification or special treatment of the juice. The main acid components (oxalic acid and ascorbic acid) of the juice were identified by HPLC technique. The effect of temperature on the purity of the product has been investigated. The as-synthesized metal oxalates were thermally decomposed at low temperatures to their respective metal oxide nanoparticles. The metal oxalates and their respective thermal decomposition products were characterized by Fourier Transform Infrared spectroscopy, X-ray diffraction analysis, and thermogravimetry.
ISSN:2356-7171
2314-6923
DOI:10.1155/2014/767695