کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6592956 1423364 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Antioxidant activity of phytosynthesized biomatrix-loaded noble metallic nanoparticles
ترجمه فارسی عنوان
فعالیت آنتیاکسیدانی نانوذرات فلزی نجیب زیستی با لیپید پتاسیم
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Biofabrication of noble monometallic platinum nanoparticles (Pt-NPs) and bimetallic gold-silver nanoparticles (AuAg-NPs) using aqueous extract of Delonix regia is presented here. Antioxidant activity of biomatrix-loaded metallic nanoparticles is estimated for scavenging of two model radicals i.e., 2,2′-Azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt and 1,1′-Diphenyl-2-picrylhydrazyl. Broad spectral continuum spanning from visible to ultra-violet region (Pt-NPs: 30 min) and broad high intensity absorption peak around at 500 nm (AuAg-NPs: 10 min) in two different UV-Visible spectra confirmed the biofabrication. Nanoparticles fabricated with distorted spherical shape and crystalline face-centred-cubic geometry. Strong signal around at 2.10 keV (pure-phase platinum) and typical X-ray peaks observed at 2.20 and 3 keV suggested, co-existence and alloying interaction of Au and Ag in AuAg-NPs. ζ potential (− 15.2 mV: Pt-NPs and − 13.9 mV: AuAg-NPs) values suggested surface adsorption of polyphenolic compounds to provide stability. Nanoparticles exhibited pronounced antioxidant activity against free radicals through their electron/hydrogen transfer ability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Chemical Engineering - Volume 26, Issue 5, May 2018, Pages 1200-1208
نویسندگان
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