Synthesis and characterization of nanocomposites Fe3O4–SiO2–chitosan based on lbl technology


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Abstract

In this paper, the apparent chain-like core-shell structure Fe3O4–SiO2–chitosan nanoparticles was synthesized by two-step method with cross-linking action of glutaraldehyde based on layer-by-layer technology, the composite particles were characterized by IR, XRD, TEM, SEM, EDS and VSM analytical methods, and the synthesis conditions of the product were studied. The results indicated that the diameter of the composite particles is about 106.5 nm, the parietal layer of chitosan is 20 nm, and after crosslinking action of glutaraldehyde, chitosan uniformaly coated the outer surface of Fe3O4–SiO2.

About the authors

Yuxiang Yang

School of Chemical and Environmental Engineering; School of Chemistry and Molecular Engineering

Author for correspondence.
Email: yxyang@ecust.edu.cn
China, Shanghai, 201418; Shanghai, 200237

Xiangnong Liu

Analysis Test Center

Email: yxyang@ecust.edu.cn
China, Yangzhou, 225009

Hailan Xu

School of Chemical and Environmental Engineering

Email: yxyang@ecust.edu.cn
China, Shanghai, 201418

Haowei Shi

School of Chemistry and Molecular Engineering

Email: yxyang@ecust.edu.cn
China, Shanghai, 200237


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