Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 144, Issue -, Pages 947-953Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2019.09.172
Keywords
Lignin; Silver nanoparticles; 4-NP
Funding
- National Natural Science Foundation of China [21676039, 21776026]
- State Key Laboratory of Bio-Fibers and Eco-Textiles [2017kfkt12]
- Innovative Talents in Liaoning Universities and Colleges [LR2017045]
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As the second largest natural polymer in nature, lignin has a large amount of reserves and has important practical application value, which has attracted increasing attention. Ag@LPAH, a nanometer silver catalyst with a 3D structure, was successfully prepared in a simple operation. In batch experiment and fixed-bed experiment, it showed excellent catalytic degradation ability and stability of 4-NP. Thanks to the large number of carboxyl groups present in the lignin-polyacrylic acid hydrogel, the silver nanoparticles are well controlled to grow with no agglomeration. Ag@LPAH-20 exhibited optimal catalytic performance and stability, requiring only 123 s to complete the reaction and maintaining 99% catalytic efficiency after 10 cycles. In addition, the catalytic efficiency can be maintained over 90% for more than 120 min in fixed bed experiment. (C) 2019 Elsevier B.V. All rights reserved.
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