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Mesoporous silica SBA-15 was synthesized using P123 as surfactant and functionalized with (3-chloropropyl) triethoxysilane. For the first time, the composite of THPP-SBA-15 was prepared using incorporation of tetrakis(4-hydroxyphenyl)porphyrin in functionalized SBA-15. The materials were characterized by BET, SEM, XRD, FT-IR, DRS, and UV–Vis spectroscopy techniques. The synthesized composite was employed as adsorbent of heavy metal ion (Pb2+) from water at room temperature. Results indicated that the presence of porphyrin in silica significantly increased heavy metal ion adsorption. The maximum adsorption capacity (qmax) of THPP-SBA-15 for Pb 2+ was found to be 134 mg/g.

Application of Porphyrin Modified SBA-15 in Adsorption of Lead Ions from Aqueous Media