کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5511868 | 1540215 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lignosulfonate-stabilized selenium nanoparticles and their deposition on spherical silica
ترجمه فارسی عنوان
نانوذرات سلنیوم پایدار لیگنوسولفونات و رسوب آنها بر روی سیلیکا کروی
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کلمات کلیدی
نانوذرات سلنیوم، لیگنوسولفونات ها، سیلیکا کروی،
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
We report a novel room-temperature synthesis of selenium nanoparticles, which for the first time uses lignosulfonate as a stabilizer. Various lignosulfonates obtained both from hardwood and softwood were tested. Selenium oxide was used as the precursor of zero-valent selenium. Three different reducers were tested â sodium borohydride, hydrazine and ascorbic acid â and the latter proved most effective in terms of the particle size and stability of the final colloid. The lignosulfonate-stabilized selenium nanoparticles had a negative zeta potential, dependent on pH, which for some lignosulfonates reached â50Â mV, indicating the excellent stability of the colloid. When spherical silica particles were introduced to the synthesis mixture, selenium nanoparticles were deposited on their surface. Additionally, star-like structures consisting of sharp selenium needles with silica cores were observed. After drying, the selenium-functionalized silica had a grey metallic hue. The method reported here is simple and cost-effective, and can be used for the preparation of large quantities of selenium colloids or the surface modification of other materials with selenium.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 103, October 2017, Pages 403-408
Journal: International Journal of Biological Macromolecules - Volume 103, October 2017, Pages 403-408
نویسندگان
Anna Modrzejewska-Sikorska, Emilia KonowaÅ, Åukasz Klapiszewski, Grzegorz Nowaczyk, Stefan Jurga, Teofil Jesionowski, Grzegorz Milczarek,