کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8021172 1517271 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrothermal synthesis of Cu2WS4 as a visible-light-activated photocatalyst in the reduction of aqueous Cr(VI)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Hydrothermal synthesis of Cu2WS4 as a visible-light-activated photocatalyst in the reduction of aqueous Cr(VI)
چکیده انگلیسی
An inexpensive and less pollutive hydrothermal method, which was based on the autoclave-sealed reactions of CuCl, Na2WO4·2H2O and thioacetamide in mixed solution of equal volume of water and ethanol at 190 °C for 72 h, was employed to synthesize Cu2WS4. X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and N2 adsorption-desorption isotherms indicated that the as-synthesized product was body-centered tetragonal structure Cu2WS4 (I-Cu2WS4) submicron crystallites with a BET specific surface area of 2.199 m2/g. UV-vis diffuse reflectance spectrum suggested that the as-synthesized I-Cu2WS4 submicron crystallites had a direct bandgap of about 2.15 eV. Besides, the as-synthesized I-Cu2WS4 submicron crystallites exhibited considerably high photocatalytic activity in the reduction of aqueous Cr(VI) under visible-light (λ>420 nm) irradiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 117, 15 February 2014, Pages 24-27
نویسندگان
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