Dissertation > Excellent graduate degree dissertation topics show

Study on Synthesis of One-dimensional Nanomaterials of Strontium Titanate and Barium Strontium Titanate

Author: ChenWanPing
Tutor: ZhuQiAn
School: Xiangtan University
Course: Inorganic Chemistry
Keywords: Strontium titanate Barium strontium titanate Reverse Microemulsion Porous anodic alumina One-dimensional nanomaterials
CLC: O614.411
Type: Master's thesis
Year: 2007
Downloads: 361
Quote: 0
Read: Download Dissertation

Abstract


Strontium titanate (SrTiO 3 ) is an important electronic ceramic material, and has excellent physical and chemical properties, its use is very widespread. With development of modern science and technology, people recognize the morphology and size of the nanomaterials on the performance of materials important impact of the one-dimensional anisotropic material in the direction of the one-dimensional one-dimensional materials with excellent physical chemical properties of the material to be able to better meet the device is intelligent and miniaturization needs, and therefore the preparation of one-dimensional nanomaterials has aroused widespread concern. Template (such as reverse microemulsion and sol - gel template method) is an effective preparation method in the preparation of the one-dimensional nanomaterials template limit growth effectively control the morphology of the product and size. Microemulsions in the water, nuclear and porous anodic alumina films serve as a template, the design and synthesis of one-dimensional nanomaterials of strontium titanate and barium strontium titanate, and study the experimental conditions on the morphology and size impact. Chapter strontium aqueous solution of quaternary reversed microemulsion synthesized SrTiO 3 nanorods, ω0 value (water and surfactant, n-octane / CTAB / n-hexyl alcohol / hydroxide agent the amount of substance ratio), the impact of the aging time and concentration of reactants on the morphology and size, and the possible mechanism of the formation of nanorods. The product obtained by transmission electron microscopy, inductively coupled plasma atomic emission spectroscopy, X-ray diffraction (XRD) were characterized. The results showed that the product is a long 260 2 000 nm, and the diameter of 50 1 00 nm strontium titanate cubic phase single crystal nanorods, strontium and titanium product material The ratio of the amount of approximately 1.0. Chapter cyclohexane / Triton X-100 and n-hexanol / water quasi-three-component phase diagram drawn by the visual method, and as a basis, cyclohexane / Triton X-100 / n-hexyl alcohol / barium hydroxide and strontium hydroxide solution four W / O reverse microemulsion prepared barium strontium titanate nanorods. Ω0 value at the same time research, reactant concentration, aging time on the morphology and size, using transmission electron microscopy, scanning electron microscopy, the energy extended X-ray analyzer, and X-ray diffractometer products were characterized. The results showed that the product is of about 500 1 200 nm, and a diameter of about 50 1 20 nm strontium titanate barium cubic phase single-crystal nanorods, product barium, The ratio of the amount of strontium and titanium material is about 0.7: 0.3: 1. Chapter IV, 40 V DC and 15 ° C, 0.5 mol · L-1 oxalic acid electrolyte secondary anodized prepared porous anodic alumina template, the depth of the hole about 11μm diameter of about 70 nm. The use of the diaphragm, and the sol - gel process, preparation of the length and diameter of approximately 5μm and 70 nm SrTiO 3 nanofibers.

Related Dissertations

  1. Calcium Barium strontium titanate ferroelectric ceramics dielectric properties of,TQ174.1
  2. Synthesis and Morphology Control of α-calcium Sulfate Hemihydrate in a Reverse Microemulsion,TQ177.3
  3. Electrical properties of thin films of barium strontium titanate ferroelectric ceramics,TB383.2
  4. Research on Lead-free （Ba, Sr）TiO3 Based Ceramics,TB34
  5. Studies on the Resistive Switching Properties of SrTiO3 Films,TP333.5
  6. The Preparation and Application of SnO2 Nanotubes and Sn/C Composite Nanofibers,TB383.1
  7. Sythesis, Modification and Application of Silica-coated Fluorescent Nanoparticles,TB383.1
  8. Research of MnCO3、CeO2 and Fe2O3 Doped Bst-based Ferroelectric Materials,TB34
  9. Low-dimensional amorphous ferroelectric materials Preparation and luminescence characteristics,TB34
  10. Study on Ba0.7Sr0.3TiO3 Series Capacitor Ceramics with High Dielectric Constant and Low Temperature Changing Rate of Relative Permittivity,TQ174.1
  11. Barium strontium titanate - based high voltage ceramic capacitor materials,TM534.1
  12. Design and Simulation of the Ferroelectric Phase Shifter Unit Structure,TN623
  13. Preparation and Characterization of Magnetic Nanoparticles Coated SiO2,TB383.1
  14. Binary co-doped BST film dielectric properties of doped mechanism,O484.42
  15. The Research of Low Voltage Oxide-based Thin Film Transistors,TN321.5
  16. Preparation and Characterization of Bi3.15Nd0.85Ti3O12 Ferroelectric Nanotubes,TB383.1
  17. Phase-equilibrium-dominated VLS Growth Mechanism and Kinetic Study of 1-dimensional Nanomaterials,TB383.1
  18. Preparation of barium strontium titanate novel morphology and its hydrophilic elastomer electric field response performance,O614.23
  19. Study on Ultra-fine （Ba, Sr）TiO3 Powders and Ceramics,TQ174
  20. SrTiO_3 base powder Preparation and Characterization,TB383.3
  21. The Study of Measuring the Parameters of BST Thin Films Using CPW at the Microwave Frequence,TN604

CLC: > Mathematical sciences and chemical > Chemistry > Inorganic Chemistry > Metal elements and their compounds > Section Ⅳ group metal elements and their compounds > The titanium Vice family ( IV B group metal elements) > Ti Ti
© 2012 www.DissertationTopic.Net  Mobile