| 摘要: |
| 目的 以石墨烯量子点为填充材料，纤维素为基体，制备石墨烯量子点/纤维素复合气凝胶。方法 以原生木浆纤维为原料，氯化锌溶液为溶剂来溶解纤维素，以无水硫酸钠为成孔剂，石墨烯量子点为填充材料，经水洗固化、低温冷冻干燥制备纤维素气凝胶复合材料。利用扫描电镜、X射线衍射、红外光谱、吸附实验等研究气凝胶的微观结构和对甲基蓝的吸附性能。结果 制备的气凝胶材料具有三维多孔结构，大孔较多，密度低，纤维素气凝胶的密度为0.113 g/cm3，吸附率为5.85%；复合气凝胶的密度为0.116 g/cm3 ，吸附率为11.22%。结论 石墨烯量子点的加入改善了纤维素气凝胶对甲基蓝的吸附效果。 |
| 关键词: 石墨烯量子点 纤维素气凝胶 甲基蓝 吸附性能 |
| DOI：10.19554/j.cnki.1001-3563.2020.05.016 |
| 分类号:TB484.3 |
| 基金项目:陕西省创新团队支持计划（2017KCT-17） |
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| Preparation and Adsorption Property of Graphene Quantum Dots/Cellulose Aerogel Composites |
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CHENG You-liang1, ZHAO Wei-na1, FANG Chang-qing1, LIU Ming2, DU You-wu2
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1.Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi'an University of Technology, Xi'an, 710048, China;2.Yangzhou City Xianghua New Materials Technology Co., Ltd., Yangzhou 225600, China
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| Abstract: |
| This work aims to prepare graphene quantum dots (GQDs)/cellulose aerogel composites with cellulose and GQDs as the matrix and the filler. The aerogel composites were prepared by washing, solidifying and freeze-drying with primary wood pulp fibers as raw materials, aqueous solution of zinc chloride as solvent, anhydrous sodium sulfate as pore forming agent and GQDs as filling materials. The SEM, XRD, FT-IR and adsorption experiments were used to study the microstructure of aerogel materials and the adsorption property to methyl blue. The results showed that the aerogel materials prepared had a three-dimensional porous structure of low density and many large pores. The density of as-prepared cellulose aerogel was 0.113 g/cm3, and the removal rate of methyl blue was 5.85%. The density of aerogel composites was 0.116 g/cm3, and the absorption rate of methyl blue was 11.22%. Therefore, the addition of GQDs improves the adsorption effect of cellulose aerogel on methyl blue. |
| Key words: graphene quantum dots cellulose aerogel methylene blue adsorption property |
