首页|Novel Co2+ passivated carbon nanodots with up-conversion effects combined with NH2-MIL-125 for improving photocatalytic NO purification and hydrogen evolution
Novel Co2+ passivated carbon nanodots with up-conversion effects combined with NH2-MIL-125 for improving photocatalytic NO purification and hydrogen evolution
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NSTL
Elsevier
? 2022Novel ionic state Co passivated carbon nanodots (Co-CDs) combined with NH2-MIL-125 as efficient photocatalysts Co-CDs/NH2-MIL-125 were fabricated in a convenient process for the first time. These materials exhibited excellent photocatalytic activity in both NO purification and hydrogen production under visible light irradiation. The NO purification rate of Co-CDs/NH2-MIL-125 increased to 46.6%, which was 20.2% and 13.4% higher than that of NH2-MIL-125 and CDs/NH2-MIL-125, respectively. Moreover, the hydrogen production efficiency of Co-CDs/NH2-MIL-125 reached 2261 μmol g?1, which was 6.86 times and 3.54 times of the values for NH2-MIL-125 and CDs/NH2-MIL-125, respectively. The corresponding properties characterized by Mott-Schottky, UCPL, and in situ DRIFTS, indicated that the introduction of Co2+ could not only passivate the CDs to further improve physicochemical properties, but also enhance the photocatalytic activity via the photosensitization and up-conversion effect. This research provides a promising strategy that adding active metal ions passivated CDs in the catalyst platform to improve photocatalytic performance.
Co passivated carbon nanodotsHydrogen productionNH2-MIL-125NO purificationUp-conversion effect
Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and Resources Chongqing Technology and Business University
School of Chemistry and Chemical Engineering Sichuan University of Arts and Science
School of Materials and Energy University of Electronic Science and Technology of China
NSTL
Elsevier
