期刊
CARBOHYDRATE POLYMERS
卷 255, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.117402
关键词
Chitosan; Cellulose; Aerogel; HKUST-1; Adsorption; Organic dyes
资金
- National Natural Science Foundation of China [21471027, 21671034, 21801021, 61409220309, 6141B012822, 6141B012823]
- Jilin Provincial Department of Education [JJKH20200758KJ, JJKH20200761KJ]
The novel composite aerogel HKUST-1/CCSA, prepared through covalent cross-linking, vacuum freeze-drying, and solvothermal methods, exhibited high adsorption capacity and good recyclability, making it suitable for applications in pollutant treatment fields.
A novel composite HKUST-1/cellulose/chitosan aerogel (HKUST-1/CCSA) as an efficient adsorbent with hierarchical pores was prepared through a facile in situ growth way combining covalent cross-linking, vacuum freeze-drying, and solvothermal methods. By incorporating with cellulose (CE), covalently cross-linked cellulose (CE)/chitosan (CS) composite aemgel exhibits good stability, maintaining fine morphology and structures in acidic solutions under solvothermal conditions. Meantime, a high content of CS is beneficial to enhancing the growth of HKUST-1. Finally, the mass loading ratio of HKUST-1 is as high as 42.54 % in HKUST-1/CCSA. The BET specific surface area of HKUST-1/CCSA reaches 457.75 m(2) g(-1), which is much larger than that of CCSA (9.74 m(2) g(-1)). HKUST-1/CCSA was applied to remove methylene blue with high adsorption capacity (526.3 mg g(-1)) and good recycling capability. This strategy can provide an effective and facile pathway to prepare ultrastable polysaccharide-based composite aemgel with high specific surface area and hierarchical pores, branching out more applications in pollutant treatment fields.
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