The Synthesis Of Boron Nitride Nanotubes And Electro-oxidation Of No

In this paper, the different nanotubes containing B, N and C elements were synthesized, the structure characteristic and the electrocatalytic oxidation of NO were studied. The various nanotubes modified electrotrodes were used to investigate the electrocatalytic oxidation of NO. This work provides theoretical basis for the fabrication of electrochemical sensors for NO detection in biomedicine and ecological environment. The thesis includes following three parts:(1) Single walled carbon nanotubes (SWCNTs) before and after modification was characterized by FT-IR. The CV and EIS were carried on for the study of NO electrooxidation on the SWCNTs modified electrodes. Results show that the SWCNTs modified electrode treated with alkali and mixed acids step by step, exhibites higher electrocatalytic activity to NO than pristine SWCNTs. The NO electrooxidation at the SWCNTs modified electrode is controlled by diffusion of NO and is influenced by the adsorption of NO on the electrode surface.(2) The BNNTs were synthesized with differents material by CVD method, the structure characteristic was characterized by FT-IR, Raman, SEM and TEM. The elements in BNNTs were analysised by XPS, which compared difference between them. The material modified electrotrodes were used to investigate the electrocatalytic oxidation of NO.(3) The BCNNTs containing B, N and C elements were synthesized by the simple CVD method. The materials were characterized by XRD, TEM and XPS. The XPS data were analysised by the comparison, revealed the bonding state among B, N and C elements, found the relation between the doped content and the reactio temperature, and investigated electrocatalytic activity of NO.