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Preparation of Paper-based Palladium Nanoparticles Composite Catalytic Material and Its Catalytic Reduction Performance for Cr(Ⅵ) |
Received:September 11, 2022 |
DOI:10.11980/j.issn.0254-508X.2022.11.008 |
Key Words:paper-based materials lignocellulose palladium nanoparticles catalytic reduction |
Fund Project:国家自然科学基金(32171723)。 |
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Abstract:In this study, micro-nano lignocellulose paper-based materials as carriers, the paper-based palladium nanoparticle composite catalytic materials with “sandwich” structure were prepared by using lignin as both reducing agents and capping agents, and the catalytic reduction performance of hexavalent chromium ions (Cr6+) was analyzed and discussed. The resalts showed that the size of palladium nanoparticles (Pd NPs) decreased with the increase of lignin content. When the lignin content was 3.07%, the loading capacity of Pd NPs reached 0.50%, the catalytic efficiency of the composite catalytic materials for Cr6+ reached the maximum, and the complete degradation and transformation of Cr6+ to Cr3+ could be achieved within 8 min. Moreover, after 5 times recycling, the catalytic efficiency still reached more than 99%, good stability and reusability of the materials were showed by improving the general bonding strength through hot pressing. |
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