Synthesis and Characteristics of Valeric Acid-Zinc Layered Hydroxide Intercalation Material for Insect Pheromone Controlled Release Formulation

Figure 7

Fitting the data of valeric acid released from its intercalation compound into distilled water at different pHs using pseudo-first order and pseudo-second order and parabolic diffusion models at (a–c) pH 4, (d-e) pH 6.5, and (g–i) pH 8.

(a) (Pseudo-first order)

(b) (Pseudo-second order)

(c) (Parabolic diffusion)

(d) (Pseudo-first order)

(e) (Pseudo-second order)

(f) (Parabolic diffusion)

(g) (Pseudo-first order)

(h) (Pseudo-second order)

(i) (Parabolic diffusion)