Green crosslinking with oxidized sodium alginate for enhanced Mo(VI) adsorption in alginate-based membranes.

• Tác giả: Menglin Chen, Qiuyi Chen, Jinshuai Liu, Yayuan Mo, Xianyi Yang, Zhe Zhang, Yan Zhao
• Ngôn ngữ: eng
• Ký hiệu phân loại: 070.48346 Journalism
• Thông tin xuất bản: Netherlands : International journal of biological macromolecules , 2025
• Bộ sưu tập: NCBI
• ID: 718753
• Chủ đề: 1. Green; 2. Crosslinking; 3. With

Tóm tắt

The use of green and nontoxic crosslinking agents in material synthesis is both important and challenging. In this study, oxidized sodium alginate (OSA) was synthesized via sodium periodate oxidation and used for the preparation of sodium alginate/polyethyleneimine membranes. FTIR confirmed the presence of aldehyde groups after the oxidation of sodium alginate. In addition, the appearance of the Schiff base structure of the OSA membrane indicated that crosslinking was successful. SEM revealed the roughness and porosity of the surfaces of OSA membranes, which were favourable for the adsorption of Mo(VI). XPS indicated that adsorption was potentially related to the coordination reactions of amino groups on PEI and to electrostatic attraction. Permeation characterization revealed that the membrane had excellent mechanical strength and durability. The maximum adsorption amount calculated via the Sips equation was 452.112 mg g