Dissertation > Excellent graduate degree dissertation topics show

Preparation of TiO2/SiO2Composite Material

Author: CaoYingJie
Tutor: MaTieCheng
School: Dalian University of Technology
Course: Materials Science
Keywords: Self-assembly TiO2-SiO2 Particles Microemulsion Quantitativeanalysis
CLC: TB332
Type: Master's thesis
Year: 2009
Downloads: 10
Quote: 0
Read: Download Dissertation

Abstract


TiO2is an important semiconductive photocatalytic material. There is a promisingapplication to degrade organic material, photocatalytic activity and treat polluted water.However, when nanocrystalline TiO2is prone to agglomerate, its excellent opticaltransmittance, high refractive index and chemical stability will decrease. So it is verynecessary to modify the surface of c particles.Nanosized pure SiO2particles were prepared by hydrolysis of tetraethyl orthosilicate（TEOS） in TX-100/cyclohexane/isobutyl alcohol/water. Nano-composite particles withCore-shell structure had been synthesized by assembling of sodiym lauryl sulfate （SDS） andTiO2nanoparticles onto nanosized SiO2particles and finally removing the surfactant bycalcination. The effects of various factors, such as the molar ratio of H2O and Tx-100,content of SiO2and calcination temperature, dispersing agent on the content of the anatasephase TiO2were investigated and the process conditions were determined. In addition, it wassearched that nano-composite particles decomposed methyl orange and was supplied inpainting. The framework vibration bands of untreated and treated nano-titanium particleswere characterized by FTIR. Ingredient and structure of nano-composite particles can beanalyzed by SDTA and TGA. The dispersion of nano-SiO2and nano-composite particles andthe size of nano-SiO2were observed by TEM. The percentage of TiO2-anatase was analysedby X-ray quantitative analysis method.The results show that the preparation of SiO2/TiO2nano-composite particles wasobtained by self-assembly technique in microemulsion. The diameter of TiO2particles isabout5nm, which was determined from the result of TEM. As a result, the shell-corenanoparticles can obtain the more anatase phase TiO2when the molar ratio [H2O]/[Tx-100],content of SiO2and calcination temperature are2,10%and800oC, respectively. In certainsense, Nano-composite particles with Core-shell structure are very useful for strengthening photocatalytic activity of particles since the SiO2can suppress the TiO2growth andincorporation, which would improve the content of anatase phase TiO2.

Related Dissertations

  1. Preparation and Tribological Properties of TZ3Y20A-SrSO4 Ceramic Matrix Composites,TB332
  2. Study on Properties of Ce、Co、Ni/V-W/TiO2 Modified by Composite Sol for Selective Catalytic Reduction,X701
  3. QTL Mapping Andanalysis for Yield Traits and Related Gene Cloning of Plant Architecture Traits in Maize,S513
  4. Predicting Model of Coal Fired Fly Ash Resistivity,X701.2
  5. Cationic Microemulsion-mediated Synthesis of MFI Zeolite,TQ424.25
  6. The Study on the Tribological Property of Schiff Base Copper (Ⅱ) Complex in Different Basis Lubricating Oils,TE624.82
  7. Quality Standard Revise and Finger Print Study of Pipazhike Granule,R286.0
  8. Microemulsion containing drug delivery systems to promote intestinal absorption of octreotide,R943
  9. Ni / TiO 2 -SiO 2 Preparation, Characterization and Hydrogenation of Maleic Anhydride,TQ225.2
  10. Preparation of Compound wind particles and preparation of quality standard,TQ461
  11. Preparation of ZnO -based microemulsion photocatalytic material,O614.241
  12. The Study on Application of Microemulsion Liquid Chromatography in Pharmaceutical Analysis,R917
  13. Synthesis and Characterization of Polyaniline Micro/nano Structure and Its Composites,TB383.1
  14. The Process of Cysteine Self-assembly on Gold Nanoparticle Modified Electrodes and Their Application,TB383.1
  15. Experiment Studies on the Effects of MMP-2 Expression Induced by Titanium Particles in MC-3T3-E1 Cells in Vitro,R687.4
  16. Preparation of Poly (Ionic Liquid)and Its Application in Polystyrene Supercritical Dioxide Carbon Foaming,TQ325.2
  17. Tribological Characterization of Uhmwpe Loaded with Alendronate Sodium in Ball-on-Disc Test,TQ325.12
  18. Preparation and Properties of Zinc Oxide and Aluminum Doped Zinc Oxide Thin Films,O484.1
  19. Study of Preparation and Emulsification of Amino Silicone,TQ264.1
  20. Rheological Properties in Processing of Inorganic Rigid Particle Filled Polymer Composites under Vibration Force Field,TQ325.14
  21. Preparation of Monodisperse Polystyrene Nanospheres in Confined Space,TQ325.2

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Composite materials > Non-metallic composite materials
© 2012 www.DissertationTopic.Net  Mobile