Electronic and Electrochemical Properties of Nitrogen Doped Carbon Nanotubes

摘要

The aim of the project was a study of effect of nitrogen doping on the electronic and electrochemical properties of CNT. During the project realization we modified CVD set-up for precise control of temperature and gas flows, elaborated a system for injection of liquid mixtures into reactor volume. The methods for synthesis of powders of random CNx nanotubes and films of aligned CNx nanotubes have been developed. Acetonitrile contained carbon and nitrogen atoms in a 2:1 ratio was chosen as a source for CNx nanotubes formation. Bimaleates of Ni, Co, Fe, Zn and their mutual solid solutions were first time used as a source of catalytic particles for growth of CNT in CVD processes. Thermolysis of a solid solution of bimaleates was revealed using XRD data analysis to result in nanoparticles being a solid solution of the metals used. The structure of samples produced over NixCo1-x, NixFe1-x, and NixZn1-x catalysts was examined by means of SEM, TEM, and XRD techniques and effect of catalyst on the yield and morphology of CNx nanotubes was demonstrated.