Journal
CARBOHYDRATE POLYMERS
Volume 208, Issue -, Pages 328-335Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.12.081
Keywords
Cellulose foam; ZIF-8 nanocrystal; Cellulose nanofiber; Adsorption capacity; Compression performance
Categories
Funding
- National Key R&D Program of China [2017YFB0308300]
- National Science Foundation of China [31670593]
- Key Scientific Research Group of Shaanxi Province [2017KCT-02]
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The excess emission of toxic gases in atmosphere and heavy metal ions in drinking water is still a serious threat to human health. In this paper, a lightweight and porous zeolitic imidazolate frameworks-8@cellulose nanofiber@cellulose foam (ZIF-8@CNF@cellulose foam) with excellent gas adsorption and heavy metal ions removal properties was prepared using a simple in situ green growth method. The nitrogen adsorption property of ZIF-8@CNF@cellulose foam was 30 times higher than pure cellulose foam. Furthermore, the adsorption testing demonstrated that the composite foam showed high adsorption capacity for fluorescent dyes (24.6 mg g(-1) for rhodamine B), heavy metal ions (35.6 mg g(-1) for Cr (VI)) and organic solvents (45.2 g g(-1) for DMF). Additionally, the ZIF-8/cellulose-based foam with 40 wt.% CNF exhibited an excellent mechanical performance, reaching a compressive strength value of 1.30 MPa. Herein, this work provides a feasible method to prepare ZIF-8@CNF@cellulose foam composite materials, which could adsorb gas molecules and heavy metal ions and show a great potential in atmosphere and water treatment.
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