Sy nthesis of Ni-Al la yered do uble hydr oxide as a nano-sor bent and its applic ation for extractio n of Para amino benzoic acid from pharmaceutica l and healthy prod ucts

Layered Double Hydroxides (LDHs), well known as a large class of anionic clays, cons ist of struct ures based o n brucite ty pe Layers of Mg(OH)۲ sheets, LDHs have the general formula [MII۱-x MIIIx(OH)۲] [xq-x/q.n(H۲ O)] (Xq-= S O۴۲-,CO۳۲-or Cl-)Mate rials and m ethods:[ Ni-A l (NO۳-] L DH The syn thesis was carried out Under N۲ a tmosphere, and all sol utions were prepared using deionized water to avoid conta mination. obtain stable Layered for this purpose, ۰.۵۸۱ g Ni(NO۳)۲ • ۶H۲O and ۰.۳۷۵ g Al(NO۳)۳ • ۹H ۲O were added Into ۳۰ mL deionized water u nder vigorous stirring at room tem p. The pH of The reaction mixtur e was adjusted to ۹.۶ B y The addition Of ۱ M NaOH Solution. Th en, The obtained slurry was Subje cted to ther mal treatme nt at a cons tant tempera ture of ۹۰.c in vessel oil for about ۲۴ h. The re sulting precipitate was separated by centrifuge Then washe d three time s with Deionized Water and Dried a t ۶۰°C For ۶ h.( Fig. ۲ Shown XRD Pattern of N i–Al (NO۳- ) LDH)The column was prepared by introducing ۲۰۰ mg of Ni-Al (NO ۳-) LDH into an empty ۲ ml polyp ropylene cartridge using The dry pa cking method. before lo ading The sa mple, ۲ mL of ۳ mol L-۱ NaOH or NaCl solution were passed through the column to clean It. then,The co lumn was c onditioned b y passing only ۳ mL of Deionized water through it prior to each Use. after loading,The retain ed analyte in the column was elute d with a ۲.۵ mL of ۱M Nacl as deso rbing and ion-exchanger solution. sample analy te inclusive being para amino ban zoic acid ۱۰۰mg portion of freshly weighted willow leaves was transferred into a mortar and complete crushing was c arried out in The with deionized water, axtraction of analyte Is based o n The adso rption of PABA ions on the Ni–Al (NO۳-) LDH and/or their exchangin g with LD H interlayer NO۳-ions.

کلیدواژه ها:

“Nick el-Aluminu m Layered Double Hydroxide ، Nanosorbe nt ، Solid Phase Extrac tion ، Spectrofluorometry ، PABA”