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Fourier transform infrared spectra of free protocatechuic acid (A) Mg/Al-layered double hydroxide (B), PANE (C), and PAND (D).
Abbreviations: PAND, protocatechuic acid-Mg/Al nanocomposite synthesized by direct method; PANE, protocatechuic acid-Mg/Al nanocomposite synthesized by ion-exchange method.
