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Title
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Construction of ZIF-67-On-UiO-66 Catalysts as a Platform for Efficient Overall Water Splitting
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Type
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JournalPaper
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Keywords
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metal− organic frameworks (MOFs),Water Splitting,UiO-66-on-ZIF-67,MZU-CoxZry
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Abstract
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A well-organized construction of hybrid metal− organic frameworks (MOFs) with exquisite structures is vital due to their potential applications. Herein, a novel hybrid nanostructure of UiO-66-on-ZIF-67, denoted as MZU-CoxZry (x and y represent the mass ratios of ZIF-67 and UiO-66, respectively), was successfully prepared by a simple method and showed a highly efficient and stable bifunctionality of both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in an alkaline medium. The MZU-Co2.5Zr1 shows remarkable OER performance with a low overpotential of 252 mV and an overpotential of 172 mV @ 10 mA/cm2 for HER in 1 mol/L KOH. With MZU-Co2.5Zr1 as the cathode and anode, the integrated water decomposition device has achieved low total potentials of 1.56 V @ 10 mA/cm2 and 1.59 V @ 30 mA/cm2 , exhibiting its excellent performance of overall water splitting. Based on the experimental results, the mechanism of the superior electrocatalytic performance of MZU-CoxZry was discussed. This work supplies guidance for the rational design of nonprecious composites for energy conversion
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Researchers
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Bingying Rao (Not In First Six Researchers), Guanghui Wu (Not In First Six Researchers), M J (Not In First Six Researchers), A R (Fifth Researcher), Hualin Jiang (Fourth Researcher), Guifang Li (Third Researcher), Mengxue Wang (Second Researcher), Pinghua Chen (First Researcher)
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