Structural, Thermal and Surface Properties of a Formulated Sunscreen: Zn/Al-nitrate Layered Double Hydroxide Intercalated with 4-aminobenzoic Acid

Intercalation of 4-amino benzoic acid (4-AB) into Zn/Al-nitrate layered double hydroxide (ZAL2) to form Zn/Al-4AB (ZALAB) compound was successfully synthesized from nitrate salt by using direct co-precipitation method. ZALAB confirmed Powder X-ray diffraction (PXRD) pattern with a basal spacing 15.3 Å. The presence COO- and C6H5NH2 functional groups 4-AB at 1,517 1,178 cm–1 in Fourier transform infrared (FTIR) spectrum reinforced intercalated the resulting compound. Based on thermal analysis, more stable compared pure 4-AB. Breuneur, Emmet Teller/Barret-Joyner-Halenda (BET/BJH) analyses demonstrated that is mesopores-type IV 4.25 m2/g surface area. This material an irregular shape different sizes particles. potential sunscreen formulation minimizes harmful effect skin, improving pharmaceutical technology skincare treatment. HIGHLIGHTS composed carboxylic aromatic potentially filter UV-B radiation Layered (LDH) known as ionic clay based brucite (Mg (OH)2) -like cations layers containing charge-balancing anions water method has higher stability GRAPHICAL ABSTRACT