Studies of Multi-walled Carbon Nanotubes and Their Capabilities of Hydrogen Adsorption
Over the last decade, there has been a significant interest of the scientific community in the synthesis of carbonaceous materials due to its wide range of application, as well on the hydrogen storage problem. Since the discovery of carbon nanotubes by Iijima, carbon nanotubes have been one of the candidate nanomaterials for hydrogen storage. However, experimental studies on hydrogen storage capacity of carbon nanotubes are still very few, and the mechanism of how hydrogen is stored into carbon nanotubes and the factors affecting the adsorption remains still unclear.
In this chapter, we describe in detail the synthesis, purification, structural characterization, and hydrogen adsorption capabilities of multi-walled carbon nanotubes (MWCNTs) obtained by an aerosol-assisted chemical vapor deposition (AACVD) method and using low-cost raw materials. In our investigation, we found that the hydrogen adsorption capacity was strongly dependent on the chemical, structural, and morphological characteristics of the carbon nanotubes obtained and purified which depend on the starting materials used for the synthesis by AACVD. In addition, hydrogen storage properties of MWCNTs were studied using a quartz crystal microbalance (QCM). Values between 0.22 and 3.46 wt% of adsorbed hydrogen were reached depending on the exposure pressure at room temperature. The maximum adsorption capacity was obtained for a purified sample with specific surface area of 729.4 ± 2.8 m2 g−1 and average pore size of 22.3 nm.
KeywordsGreen chemistry Camphor Catalyst Aerosol-assisted CVD (AACVD) MWCNTs Purification Properties Structural study Surface area Hydrogen storage
This research was partially funded by CONICYT (Grant no. ACT1117 and ID14I10124). We also acknowledge professor A. Cabrera from Physics Institute of the Pontificia Universidad Católica de Chile and facilities from Universidad de Chile for the provision of equipment and measurements for this research.
- Dai LM, Mau AWH (2001) Controlled synthesis and modification of carbon nanotubes and C60: carbon nanostructures for advanced polymeric composite materials. Adv Mater 13:899–913. https://doi.org/10.1002/1521-4095(200107)13:12/13<899:AID-ADMA899>3.0.CO;2-G CrossRefGoogle Scholar
- Harris PJF (1999) Carbon nanotubes and related structures: new materials for the twenty-first century, Cambridge University Press, New York. ISBN: 9780521005333Google Scholar
- Morel M, Mosquera E, Diaz-Droguett DE, Carvajal N, Roble M, Rojas V, Espinoza-González R (2015) Mineral magnetite as precursor in the synthesis of multi-walled carbon nanotubes and their capabilities of hydrogen adsorption. Int J Hydrog Energy 40:15540–15548. https://doi.org/10.1016/j.ijhydene.2015.09.112 CrossRefGoogle Scholar
- Rafiee MA (2012) The study of hydrogen storage in carbon nanotubes using calculated nuclear quadrupole coupling constant (NQCC) parameters (a theoretical Ab initio study). J Comput Theor Nanosci 9:2021–2026. https://doi.org/10.1166/jctn.2012.2609
- Reyhani A, Mortazavi SZ, Nozad Golikand A, Moshfegh AZ, Mirershadi S (2008) The effect of various acids treatment on the purification and electrochemical hydrogen storage of multi-walled carbon nanotubes. J Power Sour 183:539–543. https://doi.org/10.1016/j.jpowsour.2008.05.039 CrossRefGoogle Scholar
- Steiner SA, Baumann TF, Bayer BC, Blume R, Worsley MA, MoberlyChan WJ, Shaw EL, Schlögl R, Hart AJ, Hofmann S, Wardle BL (2009) Nanoscale zirconia as a nonmetallic catalyst for graphitization of carbon and growth of single- and multiwall carbon nanotubes. J Am Chem Soc 131:12144–12154. https://doi.org/10.1021/ja902913r CrossRefGoogle Scholar
- Wang JT-W, Cabana L, Bourgognon M, Kafa H, Protti A, Venner K, Shah AM, Sosabowski JK, Mather SJ, Roig A, Ke X, Van Tendeloo G, de Rosales RTM, Tobias G, Al-Jamal KT (2014) Magnetically decorated multiwalled carbon nanotubes as dual MRI and SPECT contrast agents. Adv Funct Mater 24:1880–1894. https://doi.org/10.1002/adfm.201302892 CrossRefGoogle Scholar
- Xue YH, Chen H, Yu DS, Wang SY, Yardeni M, Dai QB, Guo MM, Liu Y, Lu F, Qu J, Dai LM (2011) Oxidizing metal ions with graphene oxide: the in situ formation of magnetic nanoparticles on self-reduced graphene sheets for multifunctional applications. Chem Commun 47:11689–11691. https://doi.org/10.1039/C1CC14789G CrossRefGoogle Scholar