Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Efficient catalytic reduction of dyes by single or agglomerated nano‑silver functionalized wood and hydrodynamic simulation of wood channels
AU - Zheng, Guanfeng
AU - Li, Xinglin
AU - Song, Chaoyun
AU - Wang, Lei
AU - Li, Zhiyu
AU - Zhang, Yuchun
AU - Fu, Peng
PY - 2023/12/31
Y1 - 2023/12/31
N2 - Wood has a multi-scale pore structure, creating conditions for the development of new water purification materials. However, the adsorption capacity of wood for dyes is always limited, so this study combines the unique structure of wood with Ag nanoparticles (NPs) to achieve efficient catalytic reduction of dyes, harnessing the advantages of both. Ag/wood composite filtration materials with different Ag contents were prepared by hydrothermal method and vacuum impregnation. The results showed that with the increase of Ag content, the interaction between metal and wood channels and the degradation performance of Ag/wood composite materials exhibited a volcano-shaped trend. The contact area between Ag NPs and dye molecules plays a key role in the degradation of dye. The load phenomenon and internal flow state were discussed in detail by means of hydrodynamic simulation. Ag0.05/wood composite made silver nanoparticles and dye molecules reach a high balance and reduction degree. Therefore, Ag0.05/wood composites showed the highest catalytic reduction efficiency and great stability during the degradation of dyes, with a degradation efficiency of up to 96.9 %. The novelty of this study lies in the detailed description of the electron transfer process and mechanism of Ag NPs as a relay during MB degradation.
AB - Wood has a multi-scale pore structure, creating conditions for the development of new water purification materials. However, the adsorption capacity of wood for dyes is always limited, so this study combines the unique structure of wood with Ag nanoparticles (NPs) to achieve efficient catalytic reduction of dyes, harnessing the advantages of both. Ag/wood composite filtration materials with different Ag contents were prepared by hydrothermal method and vacuum impregnation. The results showed that with the increase of Ag content, the interaction between metal and wood channels and the degradation performance of Ag/wood composite materials exhibited a volcano-shaped trend. The contact area between Ag NPs and dye molecules plays a key role in the degradation of dye. The load phenomenon and internal flow state were discussed in detail by means of hydrodynamic simulation. Ag0.05/wood composite made silver nanoparticles and dye molecules reach a high balance and reduction degree. Therefore, Ag0.05/wood composites showed the highest catalytic reduction efficiency and great stability during the degradation of dyes, with a degradation efficiency of up to 96.9 %. The novelty of this study lies in the detailed description of the electron transfer process and mechanism of Ag NPs as a relay during MB degradation.
UR - https://researchportal.hw.ac.uk/en/publications/a3aa82ef-7a06-4317-a87d-ffe312b8c126
U2 - 10.1016/j.jwpe.2023.104522
DO - 10.1016/j.jwpe.2023.104522
M3 - Journal article
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
SN - 2214-7144
M1 - 104522
ER -