The two-dimensional modification of carbon which is also known as “graphene” is an extremely interesting material due to its physical properties, such as a very high electrical conductivity and an intrinsic mechanical strength that is even better than that of steel. For that reason, it has already been called the “miracle material“ of the 21st century. Up to now, the synthesis of graphene was to dangerous to implement it into the school curricula. The authors present a method of synthesizing graphene which can be put into practice at school without hesitation. Following experiments show the varying properties of graphene oxide and graphene during synthesis. In this way, different structure-property relationships, which appear to be one of the most important concepts in chemistry lessons, can be analyzed.
| [1] | Bolotin, K. I., Sikes, K. J., Jiang, Z., Klima, M., Fudenberg, G., Hone, J., Kim, P., Stormer, H. L. (2008). Ultrahigh electron mobility in suspended graphene. Solid State Communications 146/9-10, 351-355.View Article |
| [2] | Jo, G., Choe, M., Lee, S., Park, W., Kahng, Y. H., Lee, T. (2012). The application of graphene as electrodes in electrical and optical devices. Nanotechnology 23/11, 112001.View Article PubMed |
| [3] | Novoselov, K. S., Fal'ko, V. I., Colombo, L., Gellert, P. R., Schwab, M. G., Kim, K. (2012). A roadmap for graphene. Nature 490/7419, 192-200.View Article PubMed |
| [4] | Yu, A., Roes, I., Davies, A., Chen, Z. (2010). Ultrathin, transparent, and flexible graphene films for supercapacitor application. Appl. Phys. Lett. 96/25, 253105.View Article |
| [5] | Vivekchand, S. R. C., Rout, C. S., Subrahmanyam, K. S., Govindaraj, A., Rao, C. N. R. (2008). Graphene-based electrochemical supercapacitors. J Chem Sci 120/1, 9-13.View Article |
| [6] | Patrice Simon, Thierry Brousse and Frédéric Favier (2017). Electrochemical Double-Layer Capacitors (EDLC). In: Supercapacitors based on carbon or pseudocapacitive materials. Simon, P., Brousse, T., Favier, F. (Hrsg.). ISTE Ltd; Wiley, London UK, Hoboken NJ, 1-25.View Article |
| [7] | Brodie, B. C. (1859). On the Atomic Weight of Graphite. Philosophical Transactions of the Royal Society of London 149, 249-259.View Article |
| [8] | Staudenmaier, L. (1898). Verfahren zur Darstellung der Graphitsäure. Berichte der deutschen chemischen Gesellschaft 31/2, 1481-1487.View Article |
| [9] | Hummers, W. S., Offeman, R. E. (1958). Preparation of Graphitic Oxide. J. Am. Chem. Soc. 80/6, 1339.View Article |
| [10] | Dreyer, D. R., Park, S., Bielawski, C. W., Ruoff, R. S. (2010). The chemistry of graphene oxide. Chemical Society reviews 39/1, 228-240.View Article PubMed |
| [11] | Koch, K. R. Oxidation by Mn207: An impressive demonstration of the powerful oxidizing property of dimanganeseheptoxide.View Article |
| [12] | Parvez, K., Wu, Z.-S., Li, R., Liu, X., Graf, R., Feng, X., Müllen, K. (2014). Exfoliation of graphite into graphene in aqueous solutions of inorganic salts. Journal of the American Chemical Society 136/16, 6083-6091.View Article PubMed |
| [13] | Su, C.-Y., Lu, A.-Y., Xu, Y., Chen, F.-R., Khlobystov, A. N., Li, L.-J. (2011). High-quality thin graphene films from fast electrochemical exfoliation. ACS nano 5/3, 2332-2339.View Article PubMed |
| [14] | Smirnov, V. A., Denisov, N. N., Plotnikov, V. G., Alfimov, M. V. (2016). Photochemical processes in graphene oxide films. High Energy Chem 50/1, 51-59.View Article |
| [15] | Liu, J., Poh, C. K., Zhan, D., Lai, L., Lim, S. H., Wang, L., Liu, X., Gopal Sahoo, N., Li, C., Shen, Z., Lin, J. (2013). Improved Synthesis of graphene flakes from the multiple electrochemical exfoliation of graphite rod. Nano Energy 2/3, 377-386.View Article |
| [16] | Holleman, A. F., Wiberg, E., Wiberg, N. (2007). Lehrbuch der anorganischen Chemie, 102. Aufl. de Gruyter, Berlin u.a. |
| [17] | Martinez, C. R., Iverson, B. L. (2012). Rethinking the term “pi-stacking”. Chem. Sci. 3/7, 2191.View Article |
| [18] | Zhao, W., Fang, M., Wu, F., Wu, H., Wang, L., Chen, G. (2010). Preparation of graphene by exfoliation of graphite using wet ball milling. J. Mater. Chem. 20/28, 5817.View Article |
| [19] | Yang, X., Zhu, J., Qiu, L., Li, D. (2011). Bioinspired effective prevention of restacking in multilayered graphene films: towards the next generation of high-performance supercapacitors. Advanced materials (Deerfield Beach, Fla.) 23/25, 2833-2838.View Article PubMed |
| [20] | Fan, Z.-J., Kai, W., Yan, J., Wei, T., Zhi, L.-J., Feng, J., Ren, Y.-M., Song, L.-P., Wei, F. (2011). Facile synthesis of graphene nanosheets via Fe reduction of exfoliated graphite oxide. ACS nano 5/1, 191-198.View Article PubMed |