在高含量硅羟基的SBA-15介孔孔道中用3-氨丙基三乙氧基硅烷(APTES)表面改性后, 在介孔孔道内合成了1代和2代的PAMAM (Poly(amide amine)) 枝状化合物. 利用该复合体系进行了重金属离子吸附实验, 并与只用APTES(3-氨丙基三乙氧基硅烷) 改性的SBA-15进行对比, 得到了各代样品对Pb2+和Cu2+的饱和吸附容量, 并且用TG-MS分析方法证实了PAMAM改性后的SBA-15对金属离子的络合强度要比仅用APTES改性的要强. 在模拟废水溶液吸附实验中, 该复合体系对Pb2+、Zn2+离子具有选择吸附, 处理后溶液中Pb2+、Zn2+离子浓度为0.003mg/L和0.037mg/L, 均低于国家饮用水标准.
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.
参考文献
| [1] | Vogtle F, Weber E. Angew. Chem. Int. Ed. Engl., 1974, 13 (12): 814-816. [2] Wooly K L, Hawker C J, Frechet J M. J. Chem. Soc., Perkin. Trans. 1, 1991: 1059-1076. [3] Kim Y H. Adv. Mater., 1992, 4 (11): 764-766. [4] Pesak D J, Moore J S. Macromolecules, 1997, 30 (21): 6467-6482. [5] Kim Y H. J. Polym. Sci., Part A: Polym. Chem., 1998, 36 (11): 1685-1698. [6] Zhao M, Sun L, Cooks R M. J. Am. Chem. Soc., 1998, 120 (19): 4877-4878. [7] Wells M, Cooks R M. J. Am. Chem. Soc., 1996, 118 (16): 3988-3989. [8] Katsuma K, Shirota Y. Adv. Mater., 1998, 10 (3): 223-226. [9] Jiang D L, Aida T. Nature, 1997, 388: 454-456. [10] Sadamoto R, Tomioka N, Aida T. J. Am. Chem. Soc., 1996, 118 (16): 3978-3979. [11] Cooper A I, Londono J D, Wignall G, et al. Nature, 1997, 389: 368-371. [12] Kollner C, Pugin B, Togni A, et al. J. Am. Chem. Soc., 1998, 120 (39): 10274-10275. [13] Acosta E J, Gonzalez E O, Simanek E. J. Polym. Sci., Part A: Polym. Chem., 2005, 43 (1): 168-177. [14] Alper H, Arya P, Bourque S C, et al. Can. J. Chem., 2000, 78 (6): 919-923. [15] Acosta E J, Carr C S, Simanek E, et al. Adv. Mater., 2004, 16 (12): 985-989. [16] Reynhardt J P K, Yang Y, Alper H. Adv. Synth. Catal., 2005, 347 (10): 1379-1388. [17] Tomalia D A. Polym. J., 1985, 17 (1): 117-132. [18] Diallo M S, Christie S, Swaminathan P, et al. Environ. Sci. Technol., 2005, 39 (5): 1366-1377. [19] Diallo M S, Balogh L, Shafagati A, et al. Environ. Sci. Technol., 1999, 33 (5): 820-824. [20] GB5749-85, 中华人民共和国国家标准生活饮用水卫生标准. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%