首页> 美国卫生研究院文献>Frontiers in Chemistry >Amino- and Thiol- Polysilsesquioxane Simultaneously Coating on Poly(p-Phenylenetherephthal Amide) Fibers: Bifunctional Adsorbents for Hg(II)
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Amino- and Thiol- Polysilsesquioxane Simultaneously Coating on Poly(p-Phenylenetherephthal Amide) Fibers: Bifunctional Adsorbents for Hg(II)

机译:氨基和巯基聚倍半硅氧烷同时在聚对苯二甲酰对苯二胺纤维上涂覆:汞(II)的双功能吸附剂

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摘要

A double reagents simultaneous functionalization (DRSF) was used to prepare porous polysilsesquioxane with NH2 and SH bifunctional groups (PAMPSQ) coated poly(p-phenylenetherephthal amide) (PPTA) fibers adsorbents (PPTA-AM), via in situ condensations with aminopropyltriethoxysilane (APTES) and mercaptopropyltriethoxysilane (MPTES). The PAMPSQ coated on the PPTA surface was in the form of nanoparticles and its morphology varied with the proportion of the reactants. The PAMPSQ exhibited loose open meso- or macroporous features. The functional groups utilization of PAMPSQ was much higher than those of polysilsesquioxane on the mono-functional adsorbents with thiol or amino groups. The selective adsorption of PPTA-AM adsorbents for Hg(II) in binary component metal ion systems indicated their potential application in environmental remediation. The adsorption mechanism of Hg(II) onto PPTA-AM was proposed.
机译:通过与氨基丙基三乙氧基硅烷(APTES)原位缩合,使用双试剂同时官能化(DRSF)制备具有NH2和SH双官能团(PAMPSQ)涂层的聚对苯二甲醚对苯二胺(PPTA)纤维吸附剂(PPTA-AM)的多孔聚倍半硅氧烷)和巯基丙基三乙氧基硅烷(MPTES)。涂覆在PPTA表面上的PAMPSQ为纳米颗粒形式,其形态随反应物的比例而变化。 PAMPSQ表现出疏松的中孔或大孔特征。在具有巯基或氨基的单官能吸附剂上,PAMPSQ的官能团利用率远高于聚倍半硅氧烷。 PPTA-AM吸附剂在二元组分金属离子系统中对Hg(II)的选择性吸附表明它们在环境修复中的潜在应用。提出了Hg(II)在PPTA-AM上的吸附机理。

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