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Self-assembled graphene oxide microcapsules with adjustable permeability and yolk-shell superstructures derived from
Wanbin Li1, Yufan Zhang, Zehai Xu
1Institute of Oceanic and Environmental Chemical Engineering, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, China. guoliangz@zjut.edu.cn.
Chemical Communications (Cambridge, England)
|November 6, 2014
Summary
Researchers developed graphene oxide (GO) microcapsules using spray-drying for sustained release applications. This method also enables the creation of metal-organic framework (MOF)-GO yolk-shell structures.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Engineering
Background:
- Developing advanced microcapsule systems is crucial for controlled substance delivery.
- Graphene oxide (GO) offers unique properties for material functionalization.
- Spray-drying is a scalable technique for particle fabrication.
Purpose of the Study:
- To develop a novel method for assembling graphene oxide (GO) microcapsules.
- To achieve tunable nanochannels for sustained release properties.
- To explore the encapsulation of metal-organic frameworks (MOFs) within GO microcapsules.
Main Methods:
- Utilized a spray-drying strategy to create atomized droplets.
- Assembled GO onto the surface of these droplets.
- Incorporated water-soluble polymers to adjust nanochannel properties.
- Encapsulated metal-organic frameworks (MOFs) to form yolk-shell superstructures.
Main Results:
- Successfully fabricated GO microcapsules with tunable nanochannels.
- Demonstrated sustained release capabilities of the microcapsules.
- Achieved the formation of MOF-GO yolk-shell superstructures.
Conclusions:
- The spray-drying strategy provides an effective route for GO microcapsule fabrication.
- Tunable nanochannels allow for controlled sustained release.
- This approach is versatile for creating advanced yolk-shell nanostructures.
