Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 5, Pages 2320-2326Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b07679
Keywords
MoS2 nanodots; N-2 reduction reaction; C-S-C bridging bonds; ambient conditions; electrocatalysis
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Funding
- Natural Science Foundation of China [51672277, 61804154]
- CAS Pioneer Hundred Talents Program
- CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China
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Electrochemical N-2 reduction to NH3 has been considered as a promising sustainable and clean process to replace the conventional Haber-Bosch process. However, the development of efficient and stable electrocatalysts with superior activity for the electrochemical N-2 reduction reaction (NRR) remains a great challenge. In this work, a composite of MoS2 nanodots highly dispersed on reduced graphene oxide (MoS2 NDs/RGO) is prepared as an effective catalyst for electrochemical N-2 fixation. Benefiting from the homogeneous dispersion of the MoS2 NDs on RGO and the strong C-S-C bridging bonds between them, this composite can provide abundant active sites and boost the electron transfer in the reaction. As a result, the MoS2 NDs/RGO hybrid achieves a remarkable faradaic efficiency of 27.93% and NH3 yield rate of 16.41 mu g h(-1) mg(cat.)(-1) at ambient conditions, which is much better than the NRR performance achieved by MoS2 nanosheets on reduced graphene oxide (MoS2 NS/RGO). Additionally, the catalyst shows high electrochemical selectivity and stability.
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