Abstract
Keratin-based adsorbents showed a great potential in environmental pollution remediation. However, fabrication of keratin adsorbent with an excellent performance remains a challenging issue mainly because of its poor mechanical properties. In this research, mechanical-reinforced keratin adsorbent was designed and engineered at mesoscopic scale by the induced molecular network transition method. It was found that the β-crystallite structure of silk fibroin template could induce the transformation of free unfolded molecular chains of keratin to β-sheet conformation in the keratin adsorbent and further resulted in the controllable manipulation of the mechanical properties of the adsorbent. The prepared keratin adsorbent exhibited an excellent adsorption performance for Reactive Black 5 (RB5). The qe and removal efficiency for RB5 by the adsorbent could reach as high as 550 mg/g and 95.3%, respectively. The adsorbent exhibited an excellent regeneration and recycle performance due to its mechanical reinforcement. The facile molecular network–induced reconstruction strategy is both straightforward and effective for fabricating mechanical robust adsorbent for environmentally pollutant remediation.
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Funding
This study was funded by the Public Projects of Zhejiang Province (LGF20E030005, LGF20E030006), Zhejiang Provincial Top Key Academic Discipline of Chemical Engineering and Technology of Zhejiang Sci-Tech University (CETT 2017003), the Opening Project of Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province (project number: 1808), Scientific Research Foundation of Zhejiang Sci-Tech University (grant number 18012211-Y), and Natural Science Foundation for Young Scientists of Hebei Province (grant number E2019208319).
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Zhu, W., Qian, X., Yu, H. et al. Fabrication of mechanical robust keratin adsorbent by induced molecular network transition and its dye adsorption performance. Environ Sci Pollut Res 27, 41577–41584 (2020). https://doi.org/10.1007/s11356-020-10165-9
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DOI: https://doi.org/10.1007/s11356-020-10165-9