期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 3, 期 21, 页码 3228-3233出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz3015869
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资金
- Lopata Endowment at Washington University in St. Louis
- National Science Foundation [ECS-0335765]
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 anclear. Here we present a detailed understanding of the crumpling of GO nanosheet 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.
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