کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9801400 | 1515482 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Luminescent nanoparticles of Mn doped ZnS passivated with sodium hexametaphosphate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Luminescent nanoparticles of Mn doped ZnS passivated with sodium hexametaphosphate Luminescent nanoparticles of Mn doped ZnS passivated with sodium hexametaphosphate](/preview/png/9801400.png)
چکیده انگلیسی
We report the synthesis of luminescent nanoparticles of manganese doped zinc sulfide (ZnS:Mn2+) with an emission peak at around 590Â nm. Nanoparticles of ZnS:Mn2+ are prepared by a co-precipitation reaction from homogenous solutions of zinc and manganese salts. Based on Ostwald ripening and surface passivation, we discuss a mechanism for the formation of ZnS:Mn2+ nanoparticles. The reaction proceeds with the nucleation of ZnS crystals, which are immediately passivated by the anions in the solution. This in turn attracts cations including zinc and manganese which contribute to the growth of the crystal. These nanoparticles are sterically stabilized using polyphosphates of sodium namely sodium tripolyphosphate (STTP) and sodium hexametaphosphate (SHMP). The nanoparticles consist of particles of 60-80Â nm in diameter, each containing primary crystallites that was estimated from the X-ray diffraction patterns to be at around 2.2Â nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science and Technology of Advanced Materials - Volume 6, Issues 3â4, AprilâMay 2005, Pages 296-301
Journal: Science and Technology of Advanced Materials - Volume 6, Issues 3â4, AprilâMay 2005, Pages 296-301
نویسندگان
H.C. Warad, S.C. Ghosh, B. Hemtanon, C. Thanachayanont, J. Dutta,