Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Key Laboratory of Paper based Functional Materials of China National Light Industry, College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China.
Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Key Laboratory of Paper based Functional Materials of China National Light Industry, College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China.
Carbohydr Polym. 2019 Mar 15;208:328-335. doi: 10.1016/j.carbpol.2018.12.081. Epub 2018 Dec 26.
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 for rhodamine B), heavy metal ions (35.6 mg g for Cr (VI)) and organic solvents (45.2 g g 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.
大气中有毒气体的过量排放和饮用水中的重金属离子仍然严重威胁着人类健康。本文采用简单的原位绿色生长法，制备了一种具有优异气体吸附和重金属离子去除性能的轻质多孔沸石咪唑酯骨架-8@纤维素纳米纤维@纤维素泡沫（ZIF-8@CNF@纤维素泡沫）。ZIF-8@CNF@纤维素泡沫的氮气吸附性能比纯纤维素泡沫高 30 倍。此外，吸附测试表明，复合泡沫对荧光染料（罗丹明 B 的吸附量为 24.6mg/g）、重金属离子（Cr(VI)的吸附量为 35.6mg/g）和有机溶剂（DMF 的吸附量为 45.2g/g）具有较高的吸附能力。此外，含有 40wt.% CNF 的 ZIF-8/纤维素基泡沫表现出优异的机械性能，压缩强度值达到 1.30MPa。本工作为制备 ZIF-8@CNF@纤维素泡沫复合材料提供了一种可行的方法，该复合材料可吸附气体分子和重金属离子，在大气和水处理方面具有巨大的应用潜力。
