Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 14, Issue 11, Pages 8891-8897Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2014.9957
Keywords
Cyclic Ligand; Mesoporous Materials; Heavy Metal Ions; Selective Adsorption; Metal Coordination
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Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT, and Future Planning, Korea {Pioneer Research Center Program} [2010-0019308/2010-0019482]
- BK 21 Plus Program [21A2013800002]
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Hard donor atoms (N and 0) containing macrocyclic ligand was synthesized and further functionalized with mesoporous SBA-15 materials by chemical modification method. The modification was achieved by the immobilization of 3-chloropropyltriethoxysilane (CIPTES) onto mesoporous silica surface followed by post grafting route. The resulting material (Py-Cy-SBA-15) has been characterized by low angle X-ray diffraction (XRD), nitrogen adsorption-desorption isotherm, Fourier-transform infrared (FT-IR) spectroscopy, Si-29 and C-13 CP MAS NMR spectroscopic analyses, Thermogravimetric analysis (TGA) and elemental analysis. The long range orders of the materials were identified by transmission electron microscopy (TEM). The functionalized material was employed to the heavy metal ions adsorption from aqueous solution containing Cu2+, Co2+, Zn2+, Cd2+ and Cr2+. The prepared hybrid material showed high selectivity and adsorption capacity for Co2+ ion at pH 8.0.
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