Research Article

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

Figure 3

FTIR spectra of the thermal decomposition products (spectra (a), (b), (c), and (d) are for Dp1, Dp2, Dp3, and Dp4, resp.).
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