Preparation and Application of a Hydrochar-Based Palladium Nanocatalyst for the Reduction of Nitroarenes
In the present study, a novel heterogeneous catalyst was successfully fabricated through the decoration of palladium nanoparticles on the surface of designed Fe<sub>3</sub>O<sub>4</sub>-coffee waste composite (Pd-Fe<sub>3</sub>O<sub>4</sub>-CWH) for th...
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| Auteurs principaux: | , , , , |
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| Format: | article |
| Langue: | EN |
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MDPI AG
2021
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| Sujets: | |
| Accès en ligne: | https://doaj.org/article/23ba4cc529a64f0d8f61dcbe5fa0f50c |
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| Résumé: | In the present study, a novel heterogeneous catalyst was successfully fabricated through the decoration of palladium nanoparticles on the surface of designed Fe<sub>3</sub>O<sub>4</sub>-coffee waste composite (Pd-Fe<sub>3</sub>O<sub>4</sub>-CWH) for the catalytic reduction of nitroarenes. Various characterization techniques such as XRD, FE-SEM and EDS were used to establish its nano-sized chemical structure. It was determined that Pd-Fe<sub>3</sub>O<sub>4</sub>-CWH is a useful nanocatalyst, which can efficiently reduce various nitroarenes, including 4-nitrobenzoic acid (4-NBA), 4-nitroaniline (4-NA), 4-nitro-o-phenylenediamine (4-NPD), 2-nitroaniline (2-NA) and 3-nitroanisole (3-NAS), using NaBH<sub>4</sub> in aqueous media and ambient conditions. Catalytic reactions were monitored with the help of high-performance liquid chromatography. Additionally, Pd-Fe<sub>3</sub>O<sub>4</sub>-CWH was proved to be a reusable catalyst by maintaining its catalytic activity through six successive runs. Moreover, the nanocatalyst displayed a superior catalytic performance compared to other catalysts by providing a shorter reaction time to complete the reduction in nitroarenes. |
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