NIMTE OpenIR  > 2018专题
Boosted Electrocatalytic N-2 Reduction to NH3 by Defect-Rich MoS2 Nanoflower
Li, Xianghong; Li, Tingshuai; Ma, Yongjun; Wei, Qin; Qiu, Weibin; Guo, Haoran; Shi, Xifeng; Zhang, Peng; Asiri, Abdullah M.; Chen, Liang; Tang, Bo; Sun, Xuping
2018
发表期刊ADVANCED ENERGY MATERIALS
卷号8期号:30
摘要The industrial artificial fixation of atmospheric N-2 to NH3 is carried out using the Haber-Bosch process that is not only energy-intensive but emits large amounts of greenhouse gas. Electrochemical reduction offers an environmentally benign and sustainable alternative for NH3 synthesis. Although Mo-dependent nitrogenases and molecular complexes effectively catalyze the N-2 fixation at ambient conditions, the development of a Mo-based nanocatalyst for highly performance electrochemical N-2 fixation still remains a key challenge. Here, greatly boosted electrocatalytic N-2 reduction to NH3 with excellent selectivity by defect-rich MoS2 nanoflowers is reported. In 0.1 m Na2SO4, this catalyst attains a high Faradic efficiency of 8.34% and a high NH3 yield of 29.28 mu g h(-1) mg(cat.)(-1) at (-)0.40 V versus reversible hydrogen electrode, much larger than those of defect-free counterpart (2.18% and 13.41 mu g h(-1) mg(cat.)(-1)), with strong electrochemical stability. Density functional theory calculations show that the potential determining step has a lower energy barrier (0.60 eV) for defect-rich catalyst than that of defect-free one (0.68 eV).
关键词Efficient Hydrogen Evolution Total-energy Calculations Single Molybdenum Center Active Edge Sites Wave Basis-set Ambient Conditions Ultrathin Nanosheets Atmospheric-pressure Catalytic-reduction Nitrogen-fixation
学科领域Chemistry ; Materials Science ; Physics
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17106
专题2018专题
推荐引用方式
GB/T 7714
Li, Xianghong,Li, Tingshuai,Ma, Yongjun,et al. Boosted Electrocatalytic N-2 Reduction to NH3 by Defect-Rich MoS2 Nanoflower[J]. ADVANCED ENERGY MATERIALS,2018,8(30).
APA Li, Xianghong.,Li, Tingshuai.,Ma, Yongjun.,Wei, Qin.,Qiu, Weibin.,...&Sun, Xuping.(2018).Boosted Electrocatalytic N-2 Reduction to NH3 by Defect-Rich MoS2 Nanoflower.ADVANCED ENERGY MATERIALS,8(30).
MLA Li, Xianghong,et al."Boosted Electrocatalytic N-2 Reduction to NH3 by Defect-Rich MoS2 Nanoflower".ADVANCED ENERGY MATERIALS 8.30(2018).
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