期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 181, 期 -, 页码 1030-1038出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.04.078
关键词
Carboxymethylcellulose sodium; Magnetic aerogel; Dye adsorbent
资金
- Fundamental Research Funds for the Central Universities [2682017CY08, 2682017CX9]
- Guangdong Provincial Key Laboratory of Distributed Energy Systems [2020DES4]
A novel strategy for preparing efficient and collectable magnetic aerogels as adsorbents for dyes was proposed in this work. The magnetic composite aerogels showed high adsorption and collectable performance for dyes in water, with stable structure and floatability.
A low-cost, collectable, and efficient material is essential for adsorbing water pollution, such as dyes and heavy metal ions pollution. In this work, we proposed a novel strategy for the preparation of an efficient and collectable magnetic aerogel as adsorbent for dye. The magnetic aerogels were prepared from sodium carboxymethylcellulose (CMC) hydrogel using citric acid (CA) as the crosslinker, followed by vacuum freeze-drying technique to obtain aerogels. The effects of magnetic Fe3O4 nanoparticle contents on the adsorption properties of the aerogels were investigated. The results show that the as-prepared magnetic composite aerogels exhibit porous structure and display good adsorption and collectable performance for methylene blue (MB) in water with the removal rate of 97.5% in 6 h. The maximum compress strength and absorption capacity of the magnetic aerogel with 1 wt% Fe3O4 nanoparticle loading for MB is 0.13 MPa and 83.6 mg/g, respectively. Aerogels with Fe3O4 nanoparticies exhibited magnetism which enables the aerogels to easily collect. This excellent structure stability and collectability guarantees long-term integrity and floatability of the magnetic aerogels in water. (C) 2021 Elsevier B.V. All rights reserved.
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