کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1883631 1043302 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
γ-Ray synthesis of starch-stabilized silver nanoparticles with antibacterial activities
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
پیش نمایش صفحه اول مقاله
γ-Ray synthesis of starch-stabilized silver nanoparticles with antibacterial activities
چکیده انگلیسی

Silver nanoparticles (Ag NPs) are fabricated through γ-irradiation reduction of silver ions in aqueous starch solutions. The UV–vis analyses show smaller sizes of Ag NPs produced, with higher yields, as the irradiation doses and/or Ag+ concentrations are increased. Higher concentrations of starch enhance the yields of Ag NPs, with no significant effects on their size. The most economical Ag NPs are produced at 5 kGy γ-irradiation of a 2×10−3 M solution of AgNO3 containing 0.5% starch. They show a relatively narrow size distribution, indicated by TEM and its corresponding size distribution histogram. The XRD pattern confirms the face-centered cubic (fcc) Ag NPs embedded in starch molecules. Interactions between these nanoparticle surfaces and starch oxygen atoms are indicated by FT–IR. Antibacterial activities of Ag NPs against Escherichia coli appear dependent on the γ-ray doses applied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 77, Issue 9, September 2008, Pages 1074–1078
نویسندگان
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