Nitrogen Doped Carbon Nanotubes And The Synthesis Of Composite Materials With No Electrooxidation Research

In this paper, the synthesis and electrochemical properties towards NO of theelectrodes modified with nitrogen-doped carbon nanotubes （CN_xNTs） and theircomposites were studied. This work provides theoretical basis for the synthesis of theCN_xNTs-based composites and the fabrication of electrochemical sensors for NOdetection in biomedicine and ecological environment. This thesis includes thefollowing three parts:（1） CN_xNTs were synthesized by pyrolysis of pyridine and foam ironphthalocyanine at different temperatures and different NH₃flow rates. The influence ofthe synthesis conditions to the nitrogen content of CN_xNTs were studied. And theelectrochemical properties towards NO of the electrodes modified with the products ofCN_xNTs were investigated.（2） CN_xNTs were synthesized by pyrolysis of the feedstock of pyridine,propylamine and ethylene diamine. The high-efficiency catalyst of CoxMg_1-xMoO₄were used to increase the yield of the CN_xNTs products. The influence of the differentfeedstock to the quality ratio of the CN_xNTs products and the catalyst was studied. Andthen, the CN_xNTs products were directly decorated with FeNi alloy and Ptnanoparticles without any acid treatment. In this way, the feasibility of the CN_xNTscould be directly decorated with other materials were confirmed.（3） The composites of CeO₂/CN_xNTs and SnO₂/CN_xNTs were prepared. Thecomposites were characterized in detail and the mechanism of the composite processwas analysed. And the electrochemical properties towards NO of the electrodesmodified with the products of the CN_xNTs composites were investigated.