Researches On Functionalization Of Carbon Nanomaterials And Applications

Nano-carbon materials means its dispersed phase scale of carbon nanomaterials has at least one less than100nm dimension. Dispersed phase can be carbon atoms or heterogeneous atoms (non-carbon atoms) or even nanopore. Nanocarbon materials mainly include three types:carbon nanotubes, carbon nanofibers and nano carbon ball. In recent years, carbon nanotechnology research is quite active, a wide variety of carbon nanocrystalline, needle-like nano-carbon materials, rod, barrel have been prepared. In2000scientists in German and American had prepared a hollow cage-like molecules composed of20carbon atoms.Scientists in German and USA had prepared C6o cage-like molecules which had solved an important research difficulty.Because of excellent physical and chemical properties of carbon nanomaterials, carbon nanofibers, carbon nanotubes and graphene,they have has been widely used in many fields.Carbon nanotubers,as one of nano-carbon materials, are considered to be a the ideal add phase of composite for its electrical properties, thermal properties and its chemical nature. Carbon nanotubes as a strengthening phase and conductive phase has great potential applications in the field of nanocomposites. It has wide range of applications in nano-optoelectronic devices, superconductors, electrical and mechanical brakes, electrochemical capacitors, nanowires and nano-composite materials. The graphene oxide containing epoxy and hydroxyl functional groups in the basal plane and the carboxyl and carbonyl functional groups at the edge,which make it can enhance the adsorption capacity of the gas. Therefore, graphene oxide not only has a wide range of applications in the electron transport properties and thermal conductivity of a wide range of applications, but also has good application in gas sensors.The mian work of this paper focus on the design, synthesis, characterizaton, and application study of carbon nanotubers and GO. we try our best to combine carbon nanotubers, nano technology, spectroscopy chemistry and magnetism.This paper include following aspects. Chapter1:IntroductionThe synthesis of modification and application of caobon nanotubers,as well as GO have been reviewed. The characteristics, reaction types and the application of click chemistry were also introduced.Chapter2:Fluorescent probe for Fe (â…¢) based on pyrene grafted multiwalled carbon nanotubes by click reactionwe report the covalent functionalization of multiwalled carbon nanotubes (MWCNTs) with pyrene via Cu (â… )-catalyzed azide/alkyne click reaction under mild conditions to afford Py-MWCNTs nanocomposites. Fourier transform infrared spectroscopy (FT-IR), electrochemical method, ultraviolet and visible spectroscopy (UV-vis), fluorescence microscopy image and fluorescence microscopy were used to characterize the Py-MWCNTs nanocomposites. Experimental results indicate that the Cu (â… )-catalyzed click reaction occurs in an efficient, manner and the spacer linking MWCNTs and the photoactive molecule is well defined. The Py-MWCNTs nanocomposites show a relatively strong fluorescence and have potential applicability in photoluminescent devices as a highly selective fluorescence "turn-off'sensor for Fe3+.Chapter3:Synthesis of pyrene/GO nano composites via click chemistry and study of its propertiesGraphene oxide was functionalized with pyrene vis the "click" chemistry. Scanning electron microscopy(SEM), Fourier transform infrared spectroscopy(FT-IR), fluorescence spectroscopy (FS) and cyclic voltammetry (CV) were used to characterize the Py/GO nano composites. The Py/GO nano composites turned out to own a relatively great electrochemical and optical properties.