Advanced Materials

Microfluidic Synthesis of Titania Shells on Colloidal Silica

Authors

  • S. A. Khan,

    1. Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (USA)
    2. Present address: Assistant Professor, National University of Singapore, Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, Blk E5, #02-28 Singapore 117576, Singapore
    Search for more papers by this author
  • K. F. Jensen

    1. Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (USA)
    Search for more papers by this author

  • This work was supported primarily by the MRSEC Program of the National Science Foundation under award number DMR 02-13282.

Abstract

Multi-step addition microfluidic system for growth of well defined shell coatings without complications of secondary nucleation. Coating of colloidal silica core particles with titania layers of tunable thickness in a one-step, continuous flow process through controlled hydrolysis of titanium tetraethoxide.

original image

Ancillary