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Fitted data for the release of protocatechuic acid from PANE samples at (A) pH 7.4, (B) 5.3, and (C) 4.8 and from PAND samples at (D) pH 7.4, (E) 5.3, and (F) 4.8.
Abbreviations: PAND, protocatechuic acid-Mg/Al nanocomposite synthesized by direct method; PANE, protocatechuic acid-Mg/Al nanocomposite synthesized by ion-exchange method; min, minute.
