Dissertation > Excellent graduate degree dissertation topics show

Study on the Preparation and Photocatalytic Activity of Titanium Dioxide Nanoparticles

Author: WangZuo
Tutor: QiaoXueLiang;QiuXiaoLin
School: Huazhong University of Science and Technology
Course: Materials Science
Keywords: Titanium dioxide Photocatalytic Brookite Silver chloride Propylene oxide
CLC: O643.36
Type: Master's thesis
Year: 2011
Downloads: 89
Quote: 0
Read: Download Dissertation


Nano-titanium dioxide because of its highly efficient , non-toxic , stable , and low cost , semiconductor materials stand out and become the most widely used photocatalyst , has been widely used in waste water and waste gas processing , photocatalytic hydrogen, photovoltaic cells , antibacterial bring enormous environmental , social and economic benefits . Same time, however, the research on the titanium dioxide is far insufficient , there is still much room for improvement in terms of the preparation process and the improvement of the photocatalytic efficiency . In addition, with regard to brookite titanium dioxide study also rarely reported. Therefore, this paper solve these problems , a number of exploration . Cheap titanium tetrachloride as raw materials , different polymorphs of nano titanium dioxide powder was synthesized by hydrothermal method and precipitation method and its modification by XRD, TEM, BET and other means of testing samples structure , particle size and morphology were characterized , and then declined to UV as a reference solution of methyl orange photocatalytic activity of the investigated samples . Hydrothermal Synthesis of titanium dioxide of rutile and brookite / rutile mixed crystalline titanium dioxide , along with changes in the hydrothermal conditions , structure and performance changes , which the 160 ℃ hydrothermal 18h obtained sample plate titanium mine (Brookite) rutile (Rutile) ratio of approximately B / R = 22/78, the grain size is about 21.3nm best photocatalytic activity , 300W UV irradiation 30min , methyl orange degradation rate could reach 76.5% . Propylene oxide ( of C 3 < / sub > H 6 < / sub> O ) modifier precipitation synthesis of titanium dioxide anatase / rutile mixed crystal titanium dioxide , of which 400 ℃ < sup> 6 < / sup > 00 ° C calcined sample dispersion is more uniform , complete crystallization , high purity and crystalline phases . Silver nitrate added on the basis of different quality ( the AgNO 3 < / sub >) synthesized silver chloride / titanium dioxide (AgCl / TiO 2 ) compound semiconductor investigated composite chloride silver photocatalytic activity before and after change , found silver nitrate add the amount mAgNO the the 3 / mTiO 2 = 0.25% , the highest degradation efficiency .

Related Dissertations

  1. Preparation and Photocatalytic Properties for Water Decomposition of Titanate Photocatalyst,O643.36
  2. Studies on Synthesis, Characterization and Properties of Fe-V Co-doped TiO2 Catalyst,O614.411
  3. Characterization and mechanism of the titanium dioxide surface envelope,TQ621.12
  4. Investigation of Fabrication, Characterization and Property of Fuctional Titanium Dioxide Nanoporous Materials,TB383.1
  5. Combination Degradation of Chlor Pyrifos Via Biodegradation and Photodegradation,X592
  6. Iron, lanthanum -doped nano TiO \u003csub\u003e 2 \u003c/ sub\u003e Preparation and photocatalytic properties,O614.411
  7. Preparation and Photocatalytic Properties of Semiconductor Oxides,O643.36
  8. Degradation of microcystin and Elimination Methods,X173
  9. Copper oxide porous hollow microspheres Preparation and Characterization,O614.121
  10. Nano LaFeO 3 Controllable Synthesis and TiO 2 bridged construct composite photocatalyst,O643.36
  11. Preparation of ZnO -based microemulsion photocatalytic material,O614.241
  12. Preparation of Highly Reactive Anatase Titanium Dioxide and Its Application in Photocatalytic Hydrogen Generation,TQ116.2
  13. Study of Propylene Oxide Wastewater Pretreatment by Five-effect Evaporation Process,X78
  14. Preparation and Research of New Type Visible-light Active Photocatalyst BIVO4,O643.36
  15. Preparation of Zeolite Doping Nano-TiO2 and Research of the Photocatalytic Properties,TB383.1
  16. Morphology-controlled Synthesis of Bi2S3-based Photocatalysts and Their Photocatalytic Performance,TB383.1
  17. Photocatalytic Reduction of Nitrate on Metal Modified TiO2,X703
  18. Experimental Study on Photocatalytic Oxidation of NO Over Pt and Pd Doped TiO2 Catalysts,X701
  19. TiO 2 nanotube synthesis and modification and photocatalytic properties of,O643.32
  20. BiVO 4 / bentonite Photocatalyst and Its Dyeing Wastewater Treatment,X791

CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Chemical kinetics,catalysis > Catalytic > Catalyst
© 2012 www.DissertationTopic.Net  Mobile