Abstract

Mohammad Sadegh Asgari¹, Afsaneh Zonouzi¹, Rahmatollah Rahimi², Mahboubeh Rabbani²

DOI : http://dx.doi.org/10.13005/ojc/310331

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 (q_max) of THPP-SBA-15 for Pb²⁺ was found to be 134 mg/g.

SBA-15; Tetrakis(4-hydroxyphenyl)porphyrin; THPP; Lead; Adsorption

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