کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
595204 1454003 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation of trichloroethylene using solvent-responsive polymer coated Fe nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Degradation of trichloroethylene using solvent-responsive polymer coated Fe nanoparticles
چکیده انگلیسی

For safe and effective targeted nanoparticles delivery in natural environments, we have presented a solvent-responsive polymer coated nanoscale zerovalent iron (PNZVI), which can be easily synthesized by the modified microemulsion method followed by a in situ surface-radical graft polymerization. The prepared PNZVI was used for the degradation of trichloroethylene (TCE). The factors controlling the reduction of TCE, such as pH, ionic strength, iron content as well as the initial TCE concentration were discussed. The experiment results demonstrated the ability of polymer to modify the Fe nanoparticles surface chemistry in a way that protected the Fe core from excessive oxidation by air, water and non-target compounds. Most interestingly, the PNZVI can be miscible with TCE due to the stimuli response of outer polymer layer, which provided a possibility of nanoparticles delivery between immiscible water/oil phases. Furthermore, such responsive capability of polymer enhanced the selectivity of PNZVI to target contaminant TCE.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 369, Issues 1–3, 20 October 2010, Pages 232–239
نویسندگان
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