期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 403, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2020.123909
关键词
Silk nanofibril/ferric oxide nanohybrids; Advanced antimonite capturing; High selectivity
资金
- Natural science foundation of Shandong Province [ZR2019QD019]
- Program for Taishan Scholar of Shandong Province
A novel functional fiber-shaped nanohybrid was reported for efficient removal of antimonite by synthesizing ferric oxides anchored to silk nanofibril. The nanocomposites had high surface areas and activity, contributing to superior antimonite elimination in contaminated water.
Bioinspired fibrous materials have emerged as a unique class of matrix for fabrication of fiber-shaped nano material assemblies. Here, we report a novel functional fiber-shaped nanohybrid for efficient removal of antimonite via in situ synthesis of ferric oxides anchored to silk nanofibril. The silk nanofibril matrix played important roles in the growth of ferric oxides via metal-ligand interactions. The achieved nanocomposites had high surface areas and activity with more functional groups, contributing to superior antimonite elimination. The nanocomposite achieved a maximum removal capacity of 159.9 mg/g toward antimonite. And the common interfering ions of SO42-, NO3-, CO32- , PO43- and SiO32- exhibited negligible influence on antimonite removal. The mechanism study point that two factors are closely involved: surface complexation and hydrogen bonding. Benefiting from the low cost and environmental-friendly nature of silk fibroin as well as excellent removal capacity and high selectivity, it suggests that the nanohybrids might be promising for antimonite extraction from contaminated water.
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