A general strategy for synthesis of metal oxide nanoparticles attached on carbon nanomaterials
© Zhao et al; licensee Springer. 2011
Received: 25 June 2010
Accepted: 12 January 2011
Published: 12 January 2011
We report a general strategy for synthesis of a large variety of metal oxide nanoparticles on different carbon nanomaterials (CNMs), including single-walled carbon nanotubes, multi-walled carbon nanotubes, and a few-layer graphene. The approach was based on the π-π interaction between CNMs and modified aromatic organic ligands, which acted as bridges connecting metal ions and CNMs. Our methods can be applicable for a large variety of metal ions, thus offering a great potential application.
The attachment of nanoparticles (NPs) on carbon nanomaterials (CNMs), including single-walled carbon nanotubes (SWNTs), multi-walled carbon nanotubes (MWNTs), and graphene has attracted great interest, for the nanocomposites not only combine the extraordinary properties of the NPs and CNMs, but also exhibit some new properties caused by the interaction between them [1, 2]. For examples, when the light-harvesting NPs, such as TiO2, ZnO, CdS, CdSe, were attached on carbon nanotubes (CNTs) with high conductivity, the photocatalytic properties increased dramatically [3–5]. In addition, CNTs with large surface areas are ideal supporting materials for catalysts NPs, leading to improvements in the efficiency of the catalysts [6–8]. A lot of approaches including assembling pre-synthesized NPs as building blocks on CNTs, and spontaneous formation of NPs on CNTs, have been applied to prepare NPs/CNTs [9–14]. The previous reports mainly focused on attaching NPs on MWNTs by using benzyl alcohol or pyrene derivatives as linkages [15, 16]. Development to SWNTs and graphene, both with well-defined structures, may provide important information to explore the mechanisms of the enhanced properties of NPs after attached on CNMs. However, it still remains a challenge to fabricate uniform NPs/CNMs nanocomposites in a controlled manner. Here we present a unified strategy for synthesis of a large variety of NPs of metal oxides, including transition and rare earth metal oxides on SWNTs, MWNTs, and a few-layer graphene. The strategy was based on a noncovalent π-π interaction between delocalized π-electrons of CNMs and aromatic organic compounds, in this case phenylphosphonic acid, which acid tail can be connected with metal ions. After a hydrothermal treatment, the metal oxides NPs were formed and strongly anchored to the surface of CNMs.
Results and discussion
In summary, we report a general strategy for synthesis of a large variety of metal oxide NPs on CNMs, including SWNTs, MWNTs, and a few-layer graphene. The approach was based on the π-π interaction between CNMs and modified aromatic organic ligands, which acted as bridges connecting metal ions and CNMs. Our methods can be applicable for a large variety of metal ions. By adopting bi-metal or even tri-metal precursors in a certain mole ratio, composite oxide nanocrystals with novel structures and multi-function deposited on different CNMs can be effectively prepared through this method. The new class of hybrid nanomaterials offers a great potential application in sustainable energy, environment, and even biomedicine.
multi-walled carbon nanotubes
single-walled carbon nanotubes
transmission electron microscope
Financial support for this study was provided by Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (SZD 09003), and the National Key Project on Basic Research (Grant No. 2009CB939801, 2011CB935904) of China.
- Eder D: Carbon Nanotube-Inorganic Hybrids. Chem Rev 2010, 110: 1348. and the reference there in. and the reference there in. 10.1021/cr800433kView Article
- Chu H, Wei L, Cui R, Wang J, Li Y: Carbon nanotubes combined with inorganic nanomaterials: Preparations and applications. Coord Chem Rev 2010, 254: 1117. and the reference there in. and the reference there in. 10.1016/j.ccr.2010.02.009View Article
- Banerjee S, Wong SS: Synthesis and Characterization of Carbon Nanotube-Nanocrystal Heterostructures. Nano Lett 2002, 2: 195. 10.1021/nl015651nView Article
- Woan K, Pyrgiotakis G, Sigmund W: Photocatalytic Carbon-Nanotube-TiO2 Composites. Adv Mater 2009, 21: 2233. 10.1002/adma.200802738View Article
- Hungria AB, Juarez BH, Klinke C, Weller H, Midgley PA: 3-D characterization of CdSe nanoparticles attached to carbon nanotubes. Nano Res 2008, 1: 89. 10.1007/s12274-008-8011-xView Article
- Tang JM, Jensen K, Waje M, Li W, Larsen P, Pauley K, Chen Z, Ramesh P, Itkis P, Yan Y, Haddon RC: High Performance Hydrogen Fuel Cells with Ultralow Pt Loading Carbon Nanotube Thin Film Catalysts. J Phys Chem C 2007, 111: 17901. 10.1021/jp071469kView Article
- Wildgoose GG, Banks CE, Compton RG: Metal Nanoparticles and Related Materials Supported on Carbon Nanotubes: Methods and Applications. Small 2006, 2: 182. 10.1002/smll.200500324View Article
- Georgakilas V, Gournis D, Tzitzios V, Pasquato L, Guldi DM, Prato M: Decorating carbon nanotubes with metal or semiconductor nanoparticles. J Mater Chem 2007, 17: 2679. 10.1039/b700857kView Article
- Qu LT, Dai LM: Shape/Size-Controlled Syntheses of Metal Nanoparticles for Site-Selective Modification of Carbon Nanotubes. J Am Chem Soc 2005, 127: 10806. 10.1021/ja053479+View Article
- Han WQ, Zettl A: Coating Single-Walled Carbon Nanotubes with Tin Oxide. Nano Lett 2003, 3: 681. 10.1021/nl034142dView Article
- Coleman KS, Bailey SR, Fogden S, Green MLH: Functionalization of Single-Walled Carbon Nanotubes via the Bingel Reaction. J Am Chem Soc 2003, 125: 8722. 10.1021/ja0355675View Article
- Chu HB, Wang JY, Ding L, Yuan DN, Zhang Y, Liu J, Li Y: Decoration of Gold Nanoparticles on Surface-Grown Single-Walled Carbon Nanotubes for Detection of Every Nanotube by Surface-Enhanced Raman Spectroscopy. J Am Chem Soc 2009, 131: 14310. 10.1021/ja9035972View Article
- Li J, Tang SB, Lu L, Zeng HC: Preparation of Nanocomposites of Metals, Metal Oxides, and Carbon Nanotubes via Self-Assembly. J Am Chem Soc 2007, 129: 9401. 10.1021/ja071122vView Article
- Wang D, Li ZC, Chen LW: Templated Synthesis of Single-Walled Carbon Nanotube and Metal Nanoparticle Assemblies in Solution. J Am Chem Soc 2006, 128: 15078. 10.1021/ja066617jView Article
- Eder D, Windle AH: Carbon-Inorganic Hybrid Materials: The Carbon-Nanotube/TiO 2 Interface. Adv Mater 2008, 20: 1787. 10.1002/adma.200702835View Article
- Yang DQ, Hennequin B, Sacher E: XPS Demonstration of π-π Interaction between Benzyl Mercaptan and Multiwalled Carbon Nanotubes and Their Use in the Adhesion of Pt Nanoparticles. Chem Mater 2006, 18: 5033. 10.1021/cm061256sView Article
- Wu CX, Li JX, Dong GF, Guan LH: Removal of Ferromagnetic Metals for the Large-Scale Purification of Single-Walled Carbon nanotubes. J Phys Chem C 2009, 113: 3612. 10.1021/jp810163uView Article
- Wu C, Dong G, Guan L: Production of graphene sheets by a simple helium arc-discharge. Physica E: Low-dimensional Systems and Nanostructures 2010, 42: 1267. 10.1016/j.physe.2009.10.054View Article
- Cao CY, Cui ZM, Chen CQ, Song WG, Cai W: Ceria Hollow Nanospheres Produced by a Template-Free Microwave-Assisted Hydrothermal Method for Heavy Metal Ion Removal and Catalysis. J Phys Chem C 2010, 114: 9865. 10.1021/jp101553xView Article
- Chen J, Xu LN, Li WY, Gou XL: α-Fe 2 O 3 Nanotubes in Gas Sensor and Lithium-Ion Battery Applications. Adv Mater 2005, 17: 582. 10.1002/adma.200401101View Article
- Li JX, Wu CY, Guan LH: Lithium Insertion/Extraction Properties of Nanocarbon Materials. J Phys Chem C 2009, 113: 18431. 10.1021/jp9061658View Article
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