期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 30, 页码 26891-26897出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b07100
关键词
MOF-derived Co3O4@NC; electrocatalysis; N-2 reduction reaction; NH3 electrosynthesis; nitrogen fixation
资金
- National Natural Science Foundation of China [21561026, 21802078, 21361020]
- National First-rate Discipline Construction Project of Ningxia: Chemical Engineering and Technology [NXY-LXK2017A04]
We report the development of MOF-derived nitrogen-doped carbon/Co3O4 nanocomposites (Co3O4@NCs) with core-shell structures as an efficient electrocatalyst for the artificial nitrogen fixation at room temperature and atmospheric pressure in 0.05 M H2SO4. It exhibits a high NH3 yield of 42.58 mu g h(-1) mg(cat)(-1) and a faradaic efficiency of 8.5% at -0.2 V versus reversible hydrogen electrode. Experimental results show that the great N-2 reduction reaction performance of Co3O4@NCs originates from the synergistic effects of N-doped carbon and Co3O4 with significant oxygen vacancy. In addition, we speculate that the core-shell structure can further enhance the electrochemical activity for producing NH3.
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