Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 741, Issue -, Pages 1203-1211Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.01.271
Keywords
Oxygen-doped graphitic carbon nitrogen; Support; Dispersion; Thermal treatment; Oxygen evolution reaction
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Funding
- National Natural Science Foundation of China [21375050, 21505055, 21705058]
- Provincial Natural Science Foundation of Jiangsu [BK20170524]
- Research Foundation of Jiangsu University [17JDG007]
- Research Foundation of Zhenjiang Science and Technology Bureau [NY2016011]
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Uniform distribution of nanoparticles (NPs) with small particle size is hardly controllable, which has an impact on the electrocatalytic properties. In this work, CoFe2O4/oxygen-doped graphitic carbon nitrogen (O-C3N4) was synthesized by glycine-nitrate combustion method, which has many advantages such as high compositional homogeneity and fine particle size. O-C3N4 as a support possessing abundant oxygenated functional groups can provide more active sites for anchoring metal ions, and effectively avoid or minimize the growth and aggregation of CoFe2O4 NPs. As a result, CoFe2O4 NPs with a number-mean particle size of 5.06 +/- 0.42 nm were homogeneously fabricated on the surface of O-C3N4. Moreover, the performance of catalysis was estimated using oxygen evolution reaction (OER) as a model system. The OER performance was remarkably improved including long-term stability and the overpotential of CoFe2O4/O-C3N4 hybrid for 10 mA/cm(2) current densities with a decrease of 131 mV and 61 mV compared with CoFe2O4 and CoFe2O4/graphitic carbon nitrogen (g-C3N4) hybrid, respectively. These indicate that oxygenated functional groups on O-C3N4 not only leads to homogeneous distribution of CoFe2O4 NPs, but also improves the performance for OER. Finally, O-C3N4 could act as a novel support to enhance the dispersion of NPs for the further application in catalysis. (C) 2018 Elsevier B.V. All rights reserved.
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