کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1637722 | 1516991 | 2012 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced photocatalytic properties of hierarchical nanostructured TiO2 spheres synthesized with titanium powders
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced photocatalytic properties of hierarchical nanostructured TiO2 spheres synthesized with titanium powders Enhanced photocatalytic properties of hierarchical nanostructured TiO2 spheres synthesized with titanium powders](/preview/png/1637722.png)
چکیده انگلیسی
Using Ti powder as reagent, TiO2 nanoneedle/nanoribbon spheres were prepared via hydrothermal method in NaOH solution. The samples were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) with selected area electron diffraction (SAED), X-ray diffraction (XRD), and UV-visible light absorption spectrum. The results indicate that the growth orientations of the crystals are influenced by the hydrothermal temperature and NaOH concentration. The diameter of the nanoneedle spheres and nanoribbon spheres (40-50 μm) are almost the same as that of Ti powders. TiO2 nanoneedle/nanoribbon sphere powders are anatase after heat treatment at 450 °C for 1 h. Furthermore, methyl orange was used as a target molecule to estimate the photocatalytic activity of the specimens. Under the same testing conditions, the photocatalytic activities of the products decrease in the following order: TiO2 nanoneedle sphere, TiO2 nanoribbon sphere and P25.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 22, Issue 8, August 2012, Pages 2049-2056
Journal: Transactions of Nonferrous Metals Society of China - Volume 22, Issue 8, August 2012, Pages 2049-2056
نویسندگان
Jie TAO, Jie DENG, Xiang DONG, Hong ZHU, Hai-jun TAO,