Facile, noncovalent decoration of graphene oxide sheets with nanocrystals

By G. Lu, Shun Mao, Sungjin Park, Rodney S. Ruoff, Junhong Chen. 2009

156 citations recorded by the source corpus.

Facile dry decoration of graphene oxide sheets with aerosol Ag nanocrystals synthesized from an arc plasma source has been demonstrated using an electrostatic force directed assembly technique at room temperature. The Ag nanocrystal-graphene oxide hybrid structure was characterized by transmission electron microscopy (TEM) and selected area diffraction. The ripening of Ag nanocrystals on a graphene oxide sheet was studied by consecutive TEM imaging of the same region on a sample after heating in Ar at elevated temperatures of 100 °C, 200 °C, and 300 °C. The average size of Ag nanocrystals increased and the number density decreased after the annealing process. In particular, migration and coalescence of Ag nanocrystals were observed at a temperature as low as 100 °C, suggesting a van der Waals interaction between the Ag nanocrystal and the graphene oxide sheet. The availability of affordable graphene-nanocrystal structures and their fundamental properties will open up new opportunities for nanoscience and nanotechnology and accelerate their applications.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/50662a55ad42086831750ff736df4247638f1db4

How researchers see this paper

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In Biomedical Engineering

1. Hongjie Dai
2. Yongye Liang
3. Hailiang Wang
4. Zhuo Chen
5. Bo Yan
6. P. Trogadas
7. M. Ye
8. Thomas F. Fuller

In Electronic, Optical and Magnetic Materials

1. Hongjie Dai
2. Hailiang Wang
3. Yongye Liang
4. P. Trogadas
5. Thomas F. Fuller
6. P. Strasser
7. L. Dai
8. Frank Schwierz

In Materials Chemistry

1. Hailiang Wang
2. Yongye Liang
3. Hongjie Dai
4. Zhuo Chen
5. H. Sanchez Casalongue
6. Bo Yan
7. P. Trogadas
8. M. Ye

Citations in the corpus

• Carbon as Catalyst and Support for Electrochemical Energy Conversion (2014, background): “To circumvent this issue, highly conductive metal nanoparticles are attached onto multi-layer graphene increasing the electrical conductivity of the material [356]; silver nanoparticles are the most commonly used material to dope multi-layer graphene due to the high electrical and thermal conductivi”
• Facile synthesis and application of Ag-chemically converted graphene nanocomposite (2010, background): “[51] Lu, G.”
• TiO2 nanocrystals grown on graphene as advanced photocatalytic hybrid materials (2010, background): “3 deposition [7], sol-gel process [8] and gas phase deposition [9, 10].”
• Recent advances in chemical modifications of graphene (2015, unknown): “[200] presented a facile noncovalent decoration of graphene using silve nanoparticles.”