Abstract
Several organic ultraviolet (UV) -absorbents such as 4-hydroxy-3-methoxybenzoic acid (HMBA), 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid (HMBSA), 4-hydroxy-3-methoxycinnamic acid (HMCA), 4, 4'-diaminostilbene-2, 2'-disulfonic dcid (DASDSA), p-aminobenzoic acid (PABA) and urocanic acid (UA) were intercalated into Zn2Al layered double hydroxides (Zn2Al-LDHs) by anion-exchange and/or co-precipitation and the photochemical properties of the nanocomposites materials obtained were investigated. The UV ray absorption ability of the organic UV absorbents increased and their catalytic activity for the air oxidation of castor oil greatly decreased when they were intercalated into the interlayer spaces of the Zn2Al-LDHs.
