کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4998917 1460404 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced visible-light-driven photocatalytic degradation of RhB by AgIO3/WO3 composites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Enhanced visible-light-driven photocatalytic degradation of RhB by AgIO3/WO3 composites
چکیده انگلیسی


- AgIO3/WO3 composite was fabricated by a successive hydrothermal-deposition method.
- The visible-light-driven AgIO3/WO3 catalyst exhibited excellent photocatalytic properties.
- A possible mechanism for the improved photocatalytic activity of AgIO3/WO3 was proposed.

A novel heterojunction photocatalyst AgIO3/WO3 was fabricated through hydrothermal and chemical precipitation methods. The AgIO3/WO3 samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Energy dispersive X-ray detector, and UV-vis diffuse reflectance spectroscopy (UV-vis DRS). Moreover, the photocatalytic activities of AgIO3/WO3 samples were estimated by the decomposition of organic dye RhB under visible light irradiation (λ >420 nm). The result reveled that AgIO3/WO3 composite showed higher photocatalytic performance than pure AgIO3 and WO3 photocatalysts, and 50% AgIO3/WO3 heterojunction was recorded to have the optimum rate constant. The enhancement of the photocatalytic activity could be attributed chiefly to the effective separation and migration of photogenerated electron-hole pairs at the interface of AgIO3 and WO3. In addition, radical trap experiments confirmed that the ·OH was the primary reactive species during the photodecomposition of RhB. A possible photocatalytic mechanism of RhB decomposition over AgIO3/WO3 heterostructures was also presented.

The visible-light-driven AgIO3/WO3 catalyst exhibited excellent photocatalytic properties. A possible mechanism for the improved photocatalytic activity of AgIO3/WO3 was proposed212.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Taiwan Institute of Chemical Engineers - Volume 70, January 2017, Pages 359-365
نویسندگان
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