کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8022194 | 1517282 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of TiO2 fibers by combined electrospinning method and hydrothermal reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Crystalline TiO2 fibers were fabricated using a hydrothermal reaction or calcination treatment from titanium isopropoxide/poly(methyl methacrylate) fibers prepared using a sol-gel method and an electrospinning technique. The samples were characterized using thermogravimetric analysis, field-emission scanning electron microscopy, and X-ray diffraction. The TiO2 fiber prepared by hydrothermal reaction than calcinations treatment could be obtained to anatase phase of the small crystallite size. The crystallites size of the hydrothermal-185, calcination-450, and calcination-500 were 6.28, 12.80, and 15.39Â nm, respectively. These photocatalysts were evaluated based on the photodecomposition of methylene blue under ultraviolet light. The photocatalytic degradation rate followed a pseudo-first-order equation. The kinetic constant (k1) of the hydrothermal-185, calcination-450, and calcination-500 samples were 7.40Ã10â3, 2.21Ã10â2, and 1.55Ã10â2, respectively. The TiO2 fibers prepared using calcination treatment had higher efficiencies than those prepared using a hydrothermal reaction, but the TiO2 fibers prepared without calcination treatment could be used as photocatalysts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 106, 1 September 2013, Pages 41-44
Journal: Materials Letters - Volume 106, 1 September 2013, Pages 41-44
نویسندگان
Do-Young Choi, Cheol-Ho Hwang, Jae-Wook Lee, In-Hwa Lee, Il-Hong Oh, Ju-Young Park,