The synthesis of a core-shell hybrid composite micro-sphere with controllable homogenous or heterogeneous multi-shell structure by multiple-growth via a combination method

Mengjing Cao, Minchao Jin, Jianquan Qiu, Xiang Zhao, Yushan Liu, Xueling Zhang, Qiang Cai, Weiyao Zhu

Research output: Contribution to journalArticle

Abstract

The preparation of controllable multi-shell nano and micro particles has great significance not only for their potential applications but also for fabricating novel composite functional advanced materials. In this paper, MSiO2, MTiO2 and SSiO2 with good monodispersity and no agglomeration among spheres have been synthesized successfully based on Stöber's method. MSiO2 were characterized as the silica with a worm-like mesopore structure and with uniform pore sizes of about 2.0nm, and about 700m2/g of specific surface area. A core-shell hybrid composite micron-sized spherical particle with multi-shell structures by using the synthesized MSiO2, MTiO2 and SSiO2 with a combination method has been designed and fabricated. The multiple-layers of these spherical particles can be controllably prepared via multiple deposits in an alcohol solution system, and the standard deviations of particle size of each sample are less than 3%. The temperature and the seeds mass effect on the morphologies of MSiO2/SSiO2 and MSiO2/SSiO2/SSiO2 via multiple-growth by coating solid silica layers have been investigated. In order to illustrate the sphere with multi-shell structure may have multi-functionalized, the MSiO2 sphere embedded methylene blue in the pores and coated with solid silica shell was fabricated.

Original languageEnglish (US)
Pages (from-to)289-298
Number of pages10
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume444
DOIs
StatePublished - Mar 5 2014

Keywords

  • Controllable
  • Mesoporous silica spheres
  • Mesoporous titanium dioxide spheres
  • Monodispersed
  • Multi-shell structure
  • Solid silica

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Fingerprint Dive into the research topics of 'The synthesis of a core-shell hybrid composite micro-sphere with controllable homogenous or heterogeneous multi-shell structure by multiple-growth via a combination method'. Together they form a unique fingerprint.

  • Cite this