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A Study on Physical Dispersion and Chemical Modification of Graphene
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  • Journal title : Korean Chemical Engineering Research
  • Volume 53, Issue 6,  2015, pp.792-797
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2015.53.6.792
 Title & Authors
A Study on Physical Dispersion and Chemical Modification of Graphene
Yim, Eun-Chae; Kim, Seong-Jun;
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 Abstract
Graphene has a wide spectrum on its application field due to various and excellent physical properties. However, it is very difficult to apply that graphene exists as lump or fold condition in general organic solvents. Besides, graphene was difficult to maintain as uniform condition due to chemical inert and distributions with various size and shapes. Therefore, this study was focused to study dispersion and modifying methods of aggregated graphene. The dispersion methods contain as follow: i) physical milling using glass bead, ii) co-treatment of glass bead and ultrasonic waves, iii) dispersion in organic solvents, iv) modifying with dry-ice. Milling using glass bead with size 2.5 mm was effective to be size decrease of 36.4% in comparison with control group. Mixed treatment of glass bead (size 2.5 mm) and ultrasonic waves (225W, 10 min) showed relative size decrease of 76%, suggesting that the size decrease depends on the size of glass bead, intensity of ultrasonic waves and treatment time. Solvents of Ethyl acetate (EA) and Isoprophyl alcohol (IPA) were used in order to improve dispersion by modifying surface of graphene. IPA of them showed a favorable dispersion with more -CO functional groups in the FT-IR analysis. On the other hand, the oxygen content of graphene surface modified by dry-ice was highly increased from 0.8 to 4.9%. From the results, it was decided that the favorable dispersion state for a long time was obtained under the condition of -CO functional group increase in IPA solvent.
 Keywords
Graphene;Dispersion;Modification;Sonification;Dry ice;
 Language
Korean
 Cited by
 References
1.
Zhang, Y., Tan, J. W., Stormer, K. L. and Kim P., "Experimental Observation of the Quantum Hall Effect and Berry's Phase in Graphene," Nature, 438, 201-204(2005). crossref(new window)

2.
Kim, K. S., Zhao, Y., Jang, H., Lee, S. Y., Kim, J. M., Kim, K. S., Ahn, J. H., Kim, P., Choi, J. Y. and Hong, B. H., "Large-scale Pattern Growth of Graphene Films for Stretchable Transparent Electrodes," Nature, 457, 706-710(2009). crossref(new window)

3.
Lu, Y., Goldsmith, B. R., Kybert, N. J. and Johnson, A. T. C., "DN-decorated Graphene Chemical Sensors," Appl. Phys. Lett., 97, 083107(2010). crossref(new window)

4.
Bi, H., Huang, F., Liang, J., Xie, X. and Jiang, M., "Transparent Conductive Graphene Films Synthesized by Ambient Pressure Chemical Vapor Deposition Used as the Front Electrode of CdTe Solar Cells," Adv. Mater., 23, 3202-3206(2011). crossref(new window)

5.
Ramanathan, T., Abdala, A. A., Stankovich, S., Dikin, D. A., Herrera-Alonso, M., Piner, R. D., Adamson, D. H., Schniepp, H. C., Chen, X., Ruoff, R. S., Nguyen, S. T., Aksay, I. A., Prud'Homme, R. K. and Brinson, L. C., "Functionalized Graphene Sheets for Polymer Nanocomposites," Nature Nanotechnology, 3, 327-331 (2008). crossref(new window)

6.
Stankovich, S., Dikin, D. A., Piner, R. D., Kohlhaas, K. A., Kleinhammes, A., Jia, Y. Y., Wu, Y., Nguyen, S. T. and Ruoff, R. S., "Synthesis of Graphene-based Nanosheets via Chemical Reduction of Exfoliated Graphite Oxide," Carbon, 45, 1558-1565(2007). crossref(new window)

7.
Chen, J., Hamon, M. A., Hu, H., Chen, Y., Rao, A. M., Eklund, P. C. and Haddon, R. C., "Solution Properties of Single-walled Carbon Nanotubes," Science, 282, 95(1998). crossref(new window)

8.
Xu, Y., Bai, H., Lu, G., Li, C. and Shi, G., " Flexible Graphene Films via the Filtration of Water-Soluble Noncovalent Functionalized Graphene Sheets," J. Am. Chem. Soc., 130, 5856(2008). crossref(new window)

9.
Chen, R. J., Zhang, Y., Wang, D. and Dai, H., "Noncovalent Sidewall Functionalization of Single-Walled Carbon Nanotubes for Protein Immobilization," J. Am. Chem. Soc., 123, 3838-3839(2001). crossref(new window)

10.
Chunder, A., Liu, J. and Zhai, L., Reduced Graphene Oxide/Poly(3-hexylthiophene) Supramolecular Composites," Macromol. Rapid Commun., 31, 380-384(2010). crossref(new window)

11.
Lotya, M., Hernandez, Y., King, P. J., Smith, R. J., Nicolosi, V., Kalsson, L. S., Blighe, F. M., De, S., Wang, Z., McGovern, T., Duesberg, G. S. and Coleman, J. N., "Liquid Phase Production of Graphene by Exfoliation of Graphite in Surfactant/Water Solutions," J. Am. Chem. Soc., 131, 3611-3620(2009). crossref(new window)

12.
Rourke, J. P., Pandey, P. A., Moore, J. J., Bates, M., Kinloch, I. A., Young, R. J. and Wilson, N. R., "The Real Graphene Oxide Revealed; Stripping the Oxidative Debris from the Graphene-like Sheets," Angew. Chem. Int. Ed. Engl, 50, 3173-3177(2011). crossref(new window)

13.
Yim, E. C., Kim, S. J., Oh, I. K. and Kee, C. D., "Plasma Surface Modification of Graphene and Combination with Bacteria cellulose," Korean Chem. Eng. Res., 51(3), 1-6(2013). crossref(new window)

14.
Jeon, I. Y., Shin, Y. R., Sohn, G. J., Choi, H. J., Bae, S. Y., Mahmood, J., Jung, S. M., Seo, J. M., Kim, M. J., Chang, D.W., Dai, L. and Baek, J. B., "Edge-carboxylated Graphene Nanosheets Via Ball Milling," Proceedings of the National Academy of Sciences of the United States of America PNAS, vol. 109 no. 15.