Dissertation > Excellent graduate degree dissertation topics show

Preparation of Carbon Nanotube Chemaically Modified Electrodes Grown in Situ

Author: YangHuai
Tutor: JiangQi
School: Southwest Jiaotong University
Course: Materials Science and Engineering
Keywords: Chemically modified electrode Carbon Nanotubes Situ growth Preparation Conditions
CLC: TB383.1
Type: Master's thesis
Year: 2009
Downloads: 119
Quote: 0
Read: Download Dissertation

Abstract


In this paper, impregnation of carbon nanotubes (CNT) catalyst attached to the graphite electrode surface by chemical vapor deposition method to obtain in-situ growth of carbon nanotubes chemically modified electrode (GSCNT-CME), was studied by varying the ratio of the catalyst and the reaction gas Preparation of carbon nanotube growth defects in situ method of chemically modified electrodes, but also studied the preparation of Carbon Nanotube Chemically Modified Electrode situ optimal preparation conditions. 1 using impregnation the catalyst attached to the graphite electrode surface to H 2 as a reducing gas, N 2 for the protection of gas, C 2 H 2 as carbon, by chemical vapor deposition on a substrate directly growing carbon nanotubes on graphite obtained GSCNT-CME, the catalyst by varying the molar ratio of La and Ni to obtain a series of La-Ni -O catalyst precursor, while changing the reaction gas ratio, SEM observation of the morphology of carbon nanotubes, cyclic voltammetry (CV) was detected GSCNT-CME electrochemical performance. Found that when nickel nitrate, lanthanum nitrate and citric acid molar ratio of 1:1:4, the graphite substrate surface can be obtained with a minimum sufficient amount of carbon catalyst, the ratio of the catalyst used in the case, N 2 and C 2 H 2 30:1 volume ratio of surface defects can be obtained carbon nanotubes, carbon nanotubes having a defective performance GSCNT-CME better electrochemical detection performance GSCNT-CME also found with high stability, the reason is based on graphite electrode CNT carbon atoms, and the growth of the lattice. (2) chemical vapor deposition method using the catalyst in the impregnation of carbon nanotubes deposited on the surface of the graphite substrate, growing carbon nanotubes prepared by in-situ chemically modified electrode (CNT-CME). Changing the immersion time to get different graphite substrate, changing the calcination temperature of the catalyst precursor, carbon nanotube growth time change, resulting CNT-CME electrochemical properties are very different. Through these in-situ growth of carbon nanotubes by SEM characterization of chemically modified electrodes and redox pairs [Fe (CN) 6 ] 3 - / [Fe (CN) 6 ] 4 - solution for cyclic voltammetry found immersed in the catalyst solution 6h, the catalyst precursor is calcined at 500 ℃ for 5h, growing carbon nanotubes prepared GSCNT 10min -CME (GC/6h/500-5h/10Min) showed good electrochemical performance. At -0.83 ~ 20mV · s -1 scanning speeds, GC/6h/500-5h/10Min oxidation peak current and the square root of the scan rate was a good linear relationship. Studies show that carbon nanotubes chemically modified electrode is a quasi-reversible electrode. This not only greatly expand the range of applications of carbon nanotubes, but also enriched and developed the electrochemical analysis of content and technology, electrochemical analysis will have greater development.

Related Dissertations

  1. Carbon Nanotubes Compound Polymer Film Modified Electrode and Its Application for Electroanalytical Chemistry,O657.1
  2. SnO 2 / CNTs composite Controllable Preparation and Gas Sensitivity Study,TB383.1
  3. MWCNTs and ZnO / SnO 2 Composites and NO gas research,TB33
  4. Synthesis of Silver Nanoparticles on Modified Multi-walled Carbon Nanotubes and Their Antimicrobial Effects,TB383.1
  5. Preparation of Functional Multi-walled Carbon Nanotubes for Using in Electrochemical Capacitor Materials and Its Electrochemical Performance,TB383.1
  6. Preparation and Properties of EVOH/Carbon Nanotubes Composite Micro/Nanofibers,TB383.1
  7. Different electrical properties of carbon nanotubes covalently modified FAD molecular dynamics simulation,TB383.1
  8. Carbon nanotubes doped polyaniline and its application in gas sensors,TB383.1
  9. Nanotube modified carbon fiber reinforced composite material structure of the capacitor,TB33
  10. Single- walled carbon nanotubes in a magnetic field π electron energy band calculations,TB383.1
  11. Fe 3 O 4 , carbon nanotubes and graphene reinforced regenerated cellulose membrane research,TB383.1
  12. Doped cobalt ferrite composites and their properties,TB383.1
  13. Carbon nanotubes in the polymer nanofiber surface assembly and cell activity evaluation,R318.08
  14. PVA / carbon nanotube nano- fiber mat Preparation and Self-Assembly,TB383.1
  15. Characterization of Nano-Carbon Grafted Carbon Fiber Reinforcenent and Interfacial Properties of Its Composites,TB332
  16. Studies on the Preparation and Application of Single-walled Carbon Nanotubes Solid-phase Microfibers Based on Sol-gel Technology,TB383.1
  17. Study on the Determination Method of Plasticizer and Bisphenol in Food Contact Materials,TS206.4
  18. Studies on Determination of Heavy Metal Cd(Ⅱ) Pb(Ⅱ) Based on Lonic Liquid Composite Chemically Modified Electrodes,O657.1
  19. Hydroxyl and Sulfonate Sodium Phenyl Porphyrins and Its Metalloporphyrin Functionalize Multi-walled Carbon Nanotubes,O626.3
  20. Study on Catalytic Hydrogenolysis of Glycerol to Propanediol,TQ223.162
  21. Integrated Study on Solid Superacid Catalyst for Normal Paraffin Isomerization,TQ203.2

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials
© 2012 www.DissertationTopic.Net  Mobile