PAMAM-SBA-15 Composite in Application of Heavy Metals Ions Adsorption

doi:10.3724/SP.J.1077.2008.01231

Abstract

Abstract: Using 3-aminopropyltriethoxysilan (APTES) to modify the interior surface of SBA-15 channels, PAMAM of generation 1 and generation 2 were successfully grafted in the meso-channels of SBA-15. The PAMAM-SBA-15 hybrids are employed in the adsorption of heavy metal ions to determine their adsorptive capacity, with the APTES modified SBA-15 as a reference sample. The bonding between PAMAM hybrids and metal ions are proved to be much stronger than that of APTES modified SBA-15 by TG-MS tests. Hybrids are used in deposition solution containing several kinds of heavy metal ions, and the selective adsorption of Pb²⁺ and Zn²⁺ is found. After deposition, the concentrations of Pb²⁺ and Zn²⁺ are reduced to 0.003mg/L and 0.037mg/L, respectively, which are lower than the national standard of drinking water.

Key words: heavy metal adsorption, PAMAM, mesoporous

CLC Number:

TB332
TE685

YU Chi-Chao,ZHANG Ling-Xia,QIN Fei,LI Jiang-Tian,SHI Jian-Lin,YAN Dong-Sheng. PAMAM-SBA-15 Composite in Application of Heavy Metals Ions Adsorption[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.01231.

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PAMAM-SBA-15 Composite in Application of Heavy Metals Ions Adsorption

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