Fabrication of hollow multifunctional spheres containing MCM-41 nanoparticles and magnetite nanoparticles using layer-by-layer method

Sajanikumari Sadasivan, Gleb B. Sukhorukov

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

Macroscopic mesoporous silica spheres have been fabricated by alternatively depositing preformed MCM-41 nanoparticles and polyelectrolytes onto polystyrene lattices. High surface area hollow mesoporous spheres were obtained by removal of the core by solvent or calcination. Further, the versatility of the layer-by-layer (LBL) method was extended to fabricate magnetite-mesoporous silica composites by depositing magnetite and MCM-41 nanoparticles onto polystyrene beads. Such high surface area composites are important since the mesopores can be used for encapsulation of varied materials like enzymes and drugs while the presence of magnetite ensures application in biocatalysis and separation under magnetic field.

Original languageEnglish
Pages (from-to)437-441
Number of pages5
JournalJournal of Colloid and Interface Science
Volume304
Issue number2
DOIs
Publication statusPublished - 15 Dec 2006
Externally publishedYes

Keywords

  • Capsules
  • Layer-by-layer
  • Magnetite
  • MCM-41
  • Mesoporous
  • Polyelectrolytes

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