Abstract
A possible solution to solve the restacking issue of graphene oxide (GO) nanosheets during large-scale production is to turn the two-dimensional (2D) nanosheets into three-dimensional (3D) crumpled balls that have excellent compressive properties but still maintain high free volumes. An aerosol-based process has been proven to be a rational method for this purpose, in which, the crumpling phenomenon, however, has hitherto remained unclear. Here we present a detailed understanding of the crumpling of GO nanosheets by a systematic investigation conducted in aerosolized droplets by means of in-line (e.g., scanning mobility particle sizer) and off-line (e.g., electron microscopy) measurements. Correlations between the confinement force and various parameters, such as evaporation rate and precursor concentration were established to derive a universally applicable equation. Both calculation and experimental results revealed that the evaporation rate plays an important role in controlling the crumpling process.
| Original language | English |
|---|---|
| Pages (from-to) | 3228-3233 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry Letters |
| Volume | 3 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 1 Nov 2012 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Materials Science
- Physical and Theoretical Chemistry