Details

Autor(en) / Beteiligte

• Yang, Hua-Rong
• Li, Shan-Shan
• An, Qing-Da
• Zhai, Shang-Ru
• Xiao, Zuo-Yi
• Zhang, Li-Ping

Titel

Facile transformation of carboxymethyl cellulose beads into hollow composites for dye adsorption

Ist Teil von

• International journal of biological macromolecules, 2021-11, Vol.190, p.919-926

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2021

Quelle

MEDLINE

Beschreibungen/Notizen

• Novel millimeter hollow microspheres were fabricated from carboxymethyl cellulose microspheres and polyethyleneimine using glutaraldehyde as a crosslinking agent. The hollow microspheres prepared with different polyethyleneimine usages and different polyethyleneimine treatment time were investigated deeply and characterized via SEM-EDX, FT-IR, and BET surface area analysis. It was shown that polyethyleneimine could break the coordination bonds between the carboxyl and Al (III) in carboxymethyl cellulose microspheres, leading to the formation of hollow structures. Most importantly, the usage and treatment time of polyethyleneimine can distinctly tailor the structure of the carboxymethyl cellulose microspheres, resulting in the formation of different hollow microspheres with varied shell thickness and size. Most importantly, we found that the prepared hollow microspheres have excellent adsorption performance toward targeted methyl blue under testing conditions. By virtue of the large accessible amount of -NH2 groups and its unique hollow structure, this type of millimeter hollow microspheres have broad application prospects in the treatment of emerging contaminants in wastewater. A novel millimeter-sized hollow microsphere enriched with a large amount of -NH2 was prepared, and its formation was investigated. [Display omitted] •Novel millimeter hollow shell microspheres were prepared.•The hollow shell microspheres possess abundant -NH2.•A well-developed 3D network structure was formed in the hollow shell microspheres.•The hollow shell structure gradually changes with PEI treatment conditions.•This new hollow microsphere has good adsorption properties of methyl blue.