Silica nanoparticles functionalized via click chemistry and ATRP for enrichment of Pb(II) ion.
Silica nanoparticles functionalized via click chemistry and ATRP for enrichment of Pb(II) ion.
复制标题
通过点击化学和 ATRP 功能化二氧化硅纳米粒子，用于富集 Pb(II) 离子
DOI：
10.1186/1556-276x-7-485
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发表时间：
2012-08-29
影响因子：
--
通讯作者：
Dai Y
中科院分区：
文献类型：
--
作者：
Li W;Xu Y;Zhou Y;Ma W;Wang S;Dai Y
Silica nanoparticles have been functionalized by click chemistry and atom transfer radical polymerization (ATRP) simultaneously. First, the silanized silica nanoparticles were modified with bromine end group, and then the azide group was grafted onto the surface via covalent coupling. 3-Bromopropyl propiolate was synthesized, and then the synthesized materials were used to react with azide-modified silica nanoparticles via copper-mediated click chemistry and bromine surface-initiated ATRP. Transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis were performed to characterize the functionalized silica nanoparticles. We investigated the enrichment efficiency of bare silica and poly(ethylene glycol) methacrylate (PEGMA)-functionalized silica nanoparticles in Pb(II) aqueous solution. The results demonstrated that PEGMA-functionalized silica nanoparticles can enrich Pb(II) more quickly than pristine silica nanoparticles within 1 h.
