کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
582656 1453167 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impregnated silica nanoparticles for the reactive removal of sulphur mustard from solutions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Impregnated silica nanoparticles for the reactive removal of sulphur mustard from solutions
چکیده انگلیسی
High surface area (887.3 m2/g) silica nanoparticles were synthesized using aerogel route and thereafter, characterized by N2-Brunauer-Emmet-Teller (BET), SEM and TEM techniques. The data indicated the formation of nanoparticles of silica in the size range of 24-75 nm with mesoporous characteristics. Later, these were impregnated with reactive chemicals such as N-chloro compounds, oxaziridines, polyoxometalates, etc., which have already been proven to be effective against sulphur mustard (HD). Thus, developed novel mesoporous reactive sorbents were tested for their self-decontaminating feature by conducting studies on kinetics of adsorptive removal of HD from solution. Trichloroisocyanuric acid impregnated silica nanoparticles (10%, w/w)-based system was found to be the best with least half-life value (t1/2 = 2.8 min) among prepared systems to remove and detoxify HD into nontoxic degradation products. Hydrolysis, dehydrohalogenation and oxidation reactions were found to be the route of degradation of HD over prepared sorbents. The study also inferred that 10% loading of impregnants over high surface area and low density silica nanoparticles enhances the rate of reaction kinetics and seems to be useful in the field of heterogeneous reaction kinetics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 161, Issues 2–3, 30 January 2009, Pages 933-940
نویسندگان
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