Abstract
Poly(1-methylpyrrol-2-yl)squaraine (PMPS) particles have been characterised using SEM. The PMPS particles were used as templates to prepare bare silica and iron-silica hollow spheres, which were characterised using TEM and SEM. The PMPS particles and the hollow spheres are not uniformly sized and are agglomerated. The hollow spheres with larger diameters (>900 nm) contain an internal 'Russian doll' structure. The iron-silica hollow spheres are fused to one another, and the hollow spheres have a heterogeneous wall thickness. The silica and iron-silica hollow spheres both aggregate by size. There are two different size populations (for the diameter) of the bare silica and iron-silica hollow spheres. The smaller silica spheres have thinner walls compared to the larger silica hollow spheres. The larger silica hollow spheres and the iron-silica hollow spheres have similar wall thicknesses. The iron compound in the iron-silica hollow spheres has an oxidation state of 3+ and is crystalline. ? The Author(s) 2010.
| Original language | English |
|---|---|
| Pages (from-to) | 3697-3706 |
| Number of pages | 10 |
| Journal | Journal of Materials Science |
| Volume | 45 |
| Issue number | 14 |
| Early online date | 11 May 2010 |
| DOIs | |
| Publication status | Published - Jul 2010 |
Bibliographical note
This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.Keywords
- Hollow Sphere
- Electron Energy Loss Spectrometry
- Silica Shell
- Ultra Thin Section
- Bare Silica