文献类型：期刊文献

英文题名：Synthesis of poly(aminopropyl/methyl)silsesquioxane particles as effective Cu(II) and Pb(II) adsorbents

作者：Lu, Xin[1];Yin, Qiangfeng[1];Xin, Zhong[1];Li, Yang[1];Han, Ting[1]

机构：[1]E China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：196

起止页码：234

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20114514501612);WOS:【SCI-EXPANDED(收录号:WOS:000297881100032)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Project no. 21006025), the Fundamental Research Funds for the Central Universities (Project no. WA1013012), and East China University of Science and Technology (ECUST) through fostering the Undergraduates Innovating Experimentation Project (No. X0807).

语种：英文

外文关键词：Poly(aminopropyl/methyl)silsesquioxane; Particle; Adsorption; Copper; Lead

摘要：Poly(aminopropyl/methyl)silsesquioxane (PAMSQ) particles have been synthesized by a one-step hydrolytic co-condensation process using 3-aminopropyltriethoxysilane (APTES) and methyltrimethoxysilane (MTMS) as precursors in the presence of base catalyst in aqueous medium. The amino functionalities of the particles could be controlled by adjusting the organosilanes feed ratio. The compositions of the amino-functionalized polysilsesquioxanes were confirmed by FT-IR spectroscopy, solid-state (29)Si NMR spectroscopy, and elemental analysis. The strong adsorbability of Cu(II) and Pb(II) ions onto PAMSQ particles was systematically examined. The effect of adsorption time, initial metal ions concentration and pH of solutions was studied to optimize the metal ions adsorbability of PAMSQ particles. The kinetic studies indicated that the adsorption process well fits the pseudo-second-order kinetics. Adsorption phenomena appeared to follow Langmuir isotherm. The PAMSQ particles demonstrate the highest Cu(II) and Pb(II) adsorption capacity of 2.29 mmol/g and 1.31 mmol/g at an initial metal ions concentration of 20 mM, respectively. The PAMSQ particles demonstrate a promising application in the removal of Cu(II) and Pb(II) ions from aqueous solutions. (C) 2011 Elsevier B.V. All rights reserved.