Accessing renewable magnetic cellulose nanofiber adsorbent to enhance separation efficiency for adsorption and recovery of Cd2

Zi-Xiong Zhou; Jun-Jie Yang; Nan-Dan Zhao; Yan Wang; Wen-Xiu Zheng; Yuan-Ru Guo; Qing-Jiang Pan; Shujun Li

doi:10.1016/j.ijbiomac.2025.139765

Accessing renewable magnetic cellulose nanofiber adsorbent to enhance separation efficiency for adsorption and recovery of Cd²

Int J Biol Macromol. 2025 Jan 10:139765. doi: 10.1016/j.ijbiomac.2025.139765. Online ahead of print.

Authors

Zi-Xiong Zhou¹, Jun-Jie Yang¹, Nan-Dan Zhao², Yan Wang³, Wen-Xiu Zheng², Yuan-Ru Guo⁴, Qing-Jiang Pan², Shujun Li⁵

Affiliations

¹ Engineering Research Center of Advanced Wooden Materials (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
² Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
³ Harbin Center for Disease Control and Prevention (Harbin Center for Health Examination), Harbin 150030, China.
⁴ Engineering Research Center of Advanced Wooden Materials (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China. Electronic address: guoyrnefu@163.com.
⁵ Engineering Research Center of Advanced Wooden Materials (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China. Electronic address: lishujun@nefu.edu.cn.

PMID: 39800031
DOI: 10.1016/j.ijbiomac.2025.139765

Abstract

To address the issue of toxic cadmium pollution and meet the need for rapid separation from water body, a magnetic bio-composite material, marked as CFeMg, was prepared via a facile method. It explicitly includes components of cellulose nanofiber (CNF), Fe₃O₄ and Mg (OH)₂. The microstructures and morphology were characterized and analyzed using XRD, FT-IR, SEM, and TEM. CNF was chemically coupled by Fe₃O₄, which together constructed the overall layered structure. Between layers were Mg(OH)₂ flakes attached. While dealing with Cd²⁺, q_max of the best sample reached 361.5 mg g^-1 with high adsorption efficiency. The roles of three components were explored and the adsorption mechanism was proposed. Assisted by magnetic CNF, it only took 3 min to efficiently and completely salvage the spent CFeMg sample from water after adsorption. Due to its high adsorption capacity and facile recovery performance, the prepared composite has promising application as water treatment.

Keywords: Cadmium pollution; Magnetic cellulose nanofiber; Mg(OH)(2).