WALAILAK JOURNAL OF SCIENCE AND TECHNOLOGY

Volume 18, No. 13, Month JULY, Year 2021, Pages -

Structural, thermal and surface properties of a formulated sunscreen znal-nitrate layered double hydroxide intercalated with 4-aminobenzoic aci

Fadhlin Sakina MOHD RAJIDI, Iman Nur Fathihah Abdul AZIZ, Mazlina MUSA, Rozita YAHAYA Articl

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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 compound was confirmed by Powder X-ray diffraction (PXRD) pattern with a basal spacing of 15.3 Å. The presence of COO- and C6H5NH2 functional groups of 4-AB at 1,517 and 1,178 cm–1 in Fourier transform infrared (FTIR) spectrum reinforced 4-AB intercalated into the resulting compound. Based on the thermal analysis, 4-AB in ZALAB compound was more stable compared to pure 4-AB. Breuneur, Emmet and Teller/Barret-Joyner-Halenda (BET/BJH) analyses demonstrated that ZALAB compound is a mesopores-type IV compound with 4.25 m2/g surface area. This material is an irregular shape with different sizes of particles. ZALAB is a potential sunscreen formulation that minimizes the harmful effect on the skin, improving pharmaceutical technology in the skincare treatment.

Keywords

Zn Al layered double hydroxide, 4-aminobenzoic acid, Sunscreen formulation, Intercalation, Skin

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