Journal
NANOSCALE
Volume 8, Issue 2, Pages 1033-1039Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr06626c
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Funding
- National Natural Science Foundation of China [21375123]
- 973 Project [2011CB911002]
- Ministry of Science and Technology of China [2013YQ170585]
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In this work, we synthesized high-performance electrocatalysts for oxygen evolution reaction (OER) by one-step carbonization of cobalt(Co)-doped NH2-MIL-53(Fe) with different molar ratios between Fe and Co. The results showed that the as-prepared composite with a molar ratio between Fe and Co = 1 : 3 and the calcination temperature of 550 degrees C displayed the best OER activity, denoted as MOF(Fe-1-Co-3)(550N). The MOF(Fe-1-Co-3) 550N possesses a microporous structure with a high Brunauer-Emmett-Teller (BET) surface area of 235.37 m(2). g(-1). It shows excellent OER catalytic behavior in 0.1 M KOH solution. The overpotential at 10 mA cm(-2) is 0.39 V and the Tafel slope is 72.9 mV dec(-1), which is comparable to that of the as-synthesized RuO2. The satisfactory results are attributed to the presence of pyridine N, Co3O4, the enlarged surface area and the micropore structures after calcination.
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