%0 Generic
%9 Master's Thesis
%A Bhaumik, Sruti
%D 2009
%F pittir:7374
%K analytical chemistry; carbon nanotubes; chelating ligands; electrochemistry; metal ions; sensing; spectroscopy; voltammetry
%T Nanomaterials for spectroscopic and electrochemical detection of metal ions
%U http://d-scholarship-dev.library.pitt.edu/7374/
%X Techniques for the analysis of metal ions including ion exchange chromatography, UV-Vis-NIR spectroscopy, fluorescence spectroscopy, cyclic voltammetry, adsorptive stripping voltammetry, and use of field-effect transistors are reviewed., The advantages and disadvantages of each method will be described. Development and incorporation of nanotubes as practical materials for rapid and portable sensing applications with improved selectivity and sensitivity over previous methods is discussed. Interactions of chelating molecules ferrozine and neucuproine with Fe2+ and Cu+, respectively, are studied via UV-Vis-NIR spectroscopy. Interactions of these molecules with carbon nanotube networks are monitored spectroscopically and electrochemically to elucidate the charge transfer mechanism between analyte species, chelating ligands and the carbon nanotube network. Synthesis and characterization of carbon nanotube networks are discussed. This information will contribute to forming a framework of metal ion sensing using carbon nanotubes and aid in the rational design of nanoscale sensors for environmental, medical, biological and defense contexts.