کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7942117 | 1513213 | 2015 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparative study of photocatalytic activities of magnetically separable WO3/TiO2/Fe3O4 nanocomposites and TiO2, WO3/TiO2 and TiO2/Fe3O4 under visible light irradiation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Comparative study of photocatalytic activities of magnetically separable WO3/TiO2/Fe3O4 nanocomposites and TiO2, WO3/TiO2 and TiO2/Fe3O4 under visible light irradiation Comparative study of photocatalytic activities of magnetically separable WO3/TiO2/Fe3O4 nanocomposites and TiO2, WO3/TiO2 and TiO2/Fe3O4 under visible light irradiation](/preview/png/7942117.png)
چکیده انگلیسی
In this study WO3/TiO2/Fe3O4 nanocomposite particles with different amount of WO3 content (1, 3, 5, 8 and 10Â wt.%) were prepared via sol-gel method. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) surface areas, diffuse reflectance spectra (DRS) and the vibration sample magnetometry (VSM) were used to characterize the nanocomposites. The photocatalytic activity of the nanoparticles was tested by degrading direct blue 71 dye solution under visible light irradiation. The enhanced photocatalytic activity is attributed to the electron-hole separation and transformation among the semiconductors. The effect of the initial dye concentration, catalyst dosage and the photocatalytic reaction apparent rate constant kapp were also investigated. On the other hand the WO3/TiO2/Fe3O4 nanocomposites could be readily recovered from the reaction solution by using a permanent magnetic bar and their photocatalytic activity was studied after six cycles of repetitive recycling. Then, this nanocomposite can be used as highly efficient and reusable photocatalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Superlattices and Microstructures - Volume 88, December 2015, Pages 211-224
Journal: Superlattices and Microstructures - Volume 88, December 2015, Pages 211-224
نویسندگان
Abdollah Fallah Shojaei, Ali Shams-Nateri, Maryam Ghomashpasand,