HKUST-1 modified ultrastability cellulose/chitosan composite aerogel for highly efficient removal of methylene blue

Qun Liu; Haihuan Yu; Fanming Zeng; Xiao Li; Jing Sun; Chun Li; Hai Lin; Zhongmin Su

doi:10.1016/j.carbpol.2020.117402

HKUST-1 modified ultrastability cellulose/chitosan composite aerogel for highly efficient removal of methylene blue

Carbohydr Polym. 2021 Mar 1:255:117402. doi: 10.1016/j.carbpol.2020.117402. Epub 2020 Nov 17.

Authors

Qun Liu¹, Haihuan Yu², Fanming Zeng³, Xiao Li⁴, Jing Sun⁵, Chun Li², Hai Lin², Zhongmin Su⁶

Affiliations

¹ School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, China; Department of Light Chemical Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, China.
² School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
³ School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, China; Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China. Electronic address: zengfm@cust.edu.cn.
⁴ Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China. Electronic address: lix@cust.edu.cn.
⁵ Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China.
⁶ School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, China; Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China. Electronic address: zmsu@nenu.edu.cn.

PMID: 33436228
DOI: 10.1016/j.carbpol.2020.117402

Abstract

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 aerogel 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 m² g^-1, which is much larger than that of CCSA (9.74 m² 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 ultra-stable polysaccharide-based composite aerogel with high specific surface area and hierarchical pores, branching out more applications in pollutant treatment fields.

Keywords: Adsorption; Aerogel; Cellulose; Chitosan; Cotton; Cupric nitrate; Dyes; HKUST-1; Hydrogel; Metal–organic frameworks; Methylene blue; Organic dyes; Trimesic acid.