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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Characterization of TiO2 fibers by combined electrospinning method and hydrothermal reaction
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 15.39 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 7.40×10−3, 2.21×10−2, and 1.55×10−2, 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
نویسندگان
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