کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4766780 | 1424108 | 2017 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
FeS2-doped MoS2 nanoflower with the dominant 1T-MoS2 phase as an excellent electrocatalyst for high-performance hydrogen evolution
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Well-established methods to improve the hydrogen evolution reaction (HER) performances include, but are not limited to, tailoring the morphology and electronic structure of transition metal dichalcogenides (TMDs), and doping of earth abundant chemicals such as iron pyrite FeS2 into existing TMDs. In this work, MoS2 nanoflowers with the majority being octahedral MoS2 (1T-MoS2) and doped with FeS2 were prepared and applied to HER. The as-prepared catalysts were characterized by X-ray absorption fine structure at the K-edge of Mo, S, and Fe to probe the local electronic structures. The resulting nanomaterial was identified to be FeS2 doped MoS2 nanoflower (denoted as Fe-MoS2NF) with 66% 1T-MoS2 which was the metallic phase and could drastically boost the HER properties. The Fe-MoS2NF exhibited high HER performance with a Tafel slope of 82Â mVÂ decâ1 and it needs 136Â mV to achieve a current density of 10Â mAÂ cmâ2. The synthesis of Fe-MoS2NF with refined morphology and active electronic structure is expected to open a new era for improving the catalytic activity and stability of MoS2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 249, 20 September 2017, Pages 72-78
Journal: Electrochimica Acta - Volume 249, 20 September 2017, Pages 72-78
نویسندگان
Xue Zhao, Xiao Ma, Qingqing Lu, Qun Li, Ce Han, Zhicai Xing, Xiurong Yang,