کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7707771 | 1497319 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photodeposition of amorphous MoSx cocatalyst on TiO2 nanosheets with {001} facets exposed for highly efficient photocatalytic hydrogen evolution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Semiconductor-based photocatalytic hydrogen production is a promising approach to convert solar energy to renewable and clean hydrogen energy. However, development of cheap and efficient hydrogen evolution cocatalyst to replace noble metal based cocatalysts remains a challenge. Here, we report a MoSx/TiO2 nanohybrid prepared by a facile photo-assisted deposition method. The amorphous MoSx grows intimately on the single-crystalline TiO2 nanosheet with {001} facets exposed to form a heterojunction, which can not only facilitate the charge separation and transfer, but also provide plenty of active sites for hydrogen evolution reaction owing to abundant unsaturated S atoms on amorphous MoSx. As a result, the MoSx/TiO2 nanohybrid shows a remarkable enhancement in photocatalytic hydrogen evolution performance in comparison to bare TiO2 nanosheet. The best 0.5%-MoSx/TiO2 nanohybrid exhibits a hydrogen production rate at 1835.7 μmol gâ1 hâ1 under Xenon light irradiation, which is about 177 times higher than that of bare TiO2 nanosheet. This work paves a way for the design and construction of low-cost and noble-metal-free photocatalysts for efficient photocatalytic hydrogen evolution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 6, 8 February 2018, Pages 3223-3234
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 6, 8 February 2018, Pages 3223-3234
نویسندگان
Fuying Du, Hao Lu, Shengsen Lu, Jie Wang, Yan Xiao, Weiran Xue, Shunan Cao,