کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10621067 | 988771 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ-templated hydrothermal synthesis of Fe-doped anatase nanorods
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Anatase single crystal nanorods with aspect ratios of 4-10 and diameters of 70-100 nm were prepared by hydrothermal treatment of tetraethylammonium hydroxide peptized titania sol doped with Fe(III) cations at 200 °C. Two types of iron sources were used as dopants: (i) Fe(NO3)3, which could form α-FeOOH during the hydrothermal synthesis; (ii) hydrothermally synthesized α-FeOOH. The formation of anatase nanorods in the Fe3+ doped titania could be attributed to porous goethite (α-FeOOH) rods formed during the hydrothermal treatment. The in situ formed α-FeOOH template could lead to well dispersed anatase nanorod crystals in contrast to the strongly agglomerated rods obtained when adding as-synthesized α-FeOOH. The templates do not need to be removed since a solid solution forms between the Fe ions and anatase during hydrothermal treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 53, Issue 5, March 2005, Pages 1479-1484
Journal: Acta Materialia - Volume 53, Issue 5, March 2005, Pages 1479-1484
نویسندگان
Juan Yang, Sen Mei, Sandra Quaresma, Poul Norby, José M.F. Ferreira,