4.6 Article

Formation of multi-layered chitosan honeycomb spheres via breath-figure-like approach in combination with co-precipitation processing

Journal

MATERIALS LETTERS
Volume 211, Issue -, Pages 91-95

Publisher

ELSEVIER
DOI: 10.1016/j.matlet.2017.09.091

Keywords

Chitosan bead; Honeycomb structure; Co-precipitation; Magnetic adsorbent; Breath figure

Funding

  1. National Natural Science Foundation of China [41772264, 51408074]
  2. Research Fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection [SKLGP2017Z009]
  3. Hong Kong Scholars Program [XJ2015005, G-YZ80]

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Highly ordered, multi-layered, regular hexagonally patterned and size controlled honeycomb magnetic chitosan hydrogel beads were successfully fabricated by a facile method combining breath-figure templating and co-precipitation processing. The chitosan honeycomb beads were characterized and the unique structure formation mechanism was outlined. The diameter of pores in the hexagonally patterned structure was similar to 10 mu m, and the saturation magnetization of the chitosan honeycomb containing Fe3O4 nanoparticles (ca. 5 +/- 2 nm) was around 12 emu/g. (C) 2017 Elsevier B.V. All rights reserved.

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