Presented here is a simple, inexpensive approach to aggregating colloids into hierarchically structured spherical particles. Successive aggregation steps are used to assemble a particle that is self-similar on two size scales and is permeated by an ordered pore network with a bidisperse size distribution. The structure of the o- and macropore networks as well as the mechanical integrity of the structure can be controlled by varying sintering conditions.
Bibliographical noteFunding Information:
This work was supported by Grants GM 45988 from the National Institutes of Health and CHE 917029 from the National Science Foundation. D.H.R. gratefully recognizes support through a Biotechnology Training Fellowship through the National Institutes of General Medical Sciences (IT32-GM08347). Thanks also go to the Surface Analysis Center at the University of Minnesota for instrumentation.
Copyright 2017 Elsevier B.V., All rights reserved.
- colloid aggregation
- liquid chromatography