کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11026617 | 1666370 | 2019 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
NH4Cl-assisted in air, low temperature synthesis of SnS2 nanoflakes with high visible-light-activated photocatalytic activity
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This communication reports a viable low temperature method for scalable production of SnS2 nanomaterials with promising applications in visible-light photocatalysis and photovoltaics. SnS2 nanoflakes were synthesized via heating the mixture of NH4Cl, S and Sn powders in air at 250â¯Â°C for 2â¯h, followed by a washing process. X-ray diffraction, scanning electron microscope, and nitrogen adsorption-desorption isotherms characterization indicated the formation of pure SnS2 nanoflakes with a specific surface area of 32.081â¯m2/g. Comparative synthesis experiments manifested that NH4Cl played an indispensable role in our low temperature synthesis of SnS2. UV-vis absorbance spectrum demonstrated that the as-synthesized SnS2 nanoflakes had much higher absorption of visible-light than hydrothermally synthesized SnS2 and thermally exfoliated g-C3N4. Transient photocurrent measurements and photocatalytic tests indicated that our product had not only exceptionally larger photocurrent, but also significantly higher photocatalytic activity than hydrothermally synthesized SnS2 and thermally exfoliated g-C3N4 in the reduction of Cr(VI) under visible-light (λâ¯>â¯420â¯nm) irradiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 234, 1 January 2019, Pages 361-363
Journal: Materials Letters - Volume 234, 1 January 2019, Pages 361-363
نویسندگان
Shaoling Wang, Tianxiao Peng, Yongcai Zhang,