Abstract
There has been a continuous call for active, durable, and low-cost catalysts for a range of catalysis reactions. In this paper, porous Co@C composed of uniformly dispersed Co metal nanoparticles in hexagonal-shaped prisms carbon matrix were fabricated by in situ pyrolysis of hexagonal-shaped prismatic Co-MOF-74 crystals. The obtained nanoporous carbons have a high surface area of 195.2 m2/g and a strong magnetic response, thereby realizing fast molecular diffusion of reactant and easy magnetic separation. The resulting Co@C catalyst show a superior and durable catalytic activity for reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). Moreover, Co@C can be recycled and still retains more than 75% of its original catalytic activity after 6 cycles. Therefore, it is reasonable to believe that such Co@C nanocomposites have great potential as a highly efficient and low-cost heterogeneous catalyst. It is believed that MOFs can be used to produce other catalysts with high porosity and uniformly dispersed active sites.
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ACKNOWLEDGMENTS
Financial support from the National Natural Science Foundation of China (Nos. 21162027 and 21261022), the Graduate Student Research Innovation Project of Xinjiang (No. XJGRI2013016), and the Outstanding Doctoral Innovation Project of Xinjiang University (XJUBSCX-2012020) is gratefully acknowledged.
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Li, H., Chi, L., Yang, C. et al. MOF derived porous Co@C hexagonal-shaped prisms with high catalytic performance. Journal of Materials Research 31, 3069–3077 (2016). https://doi.org/10.1557/jmr.2016.314
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DOI: https://doi.org/10.1557/jmr.2016.314