Dissertation > Excellent graduate degree dissertation topics show

Doped iron nano-titanium dioxide Preparation, Characterization and Photocatalytic Study of Effectiveness

Author: YangJuanYu
Tutor: ChenXiaoQing
School: Central South University
Course: Analytical Chemistry
Keywords: nanometer freeze-drying iron-doped titanium dioxide photocatalytic activity wastewater
CLC: O643.3
Type: Master's thesis
Year: 2004
Downloads: 615
Quote: 0
Read: Download Dissertation


The nanocrystalline iron-doped titania was prepared by sol-gel technique. Thermogravimeteric and differential thermal analyse, X-ray diffraction, scanning electron microscophy, laser diffraction particle size analyzer and UV-Vis spectrophotometer technology were used to characterize the product.From the results of experiments, we draw the conclusions that the optimal reaction temperature is 40 , the water dosage is 60ml, the pH value is 1.0, the optimal calcining temperature is 400 and the best iron content is 0.05%. The particle size is 70.1nm and the surface area is 72.4 m2/g from the sample of pure anatase titania calcined at 400 for 2h. On the other hand, the particle size is 63.4nm and the surface area is 82.2 m2/g from the sample of 0.05% iron-doped anatase titania calcined at the same temperature. Moreover, the iron implantation decreases the grain growth rate. Finally, the absorption edge of the iron-doped titania has a red shift and the sample also has a stronger absorption than the pure titania in the visible region. Since the iron-doped titania can absorb light in a wider range of wavelength and utilize more light energy than pure titania. It follows that a higher photocatalytic activity should be expected in iron-doped titania. The same result is further confirmed by the result of photocatalytic activity of phenol and living wastewater.

Related Dissertations

  1. Studies on the Synthesis and Technology of Dipentaerythritol and Its Derivative,TQ223.164
  2. Studies on Synthesis, Characterization and Properties of Fe-V Co-doped TiO2 Catalyst,O614.411
  3. Phosphate byproduct sodium fluosilicate chlorine wastewater recycling study,X786
  4. Study of the Treatment of Printing and Dyeing Wastewater Using a Pilot-scale Combined Process of Multi-stage Anaerobic Phases and Cross Flow Aerobic Sludge Reactor,X791
  5. Modification and Application of the Waste Fluorgypsum and the Treating of High Concentrations Fluoride Wastewater,X703
  6. Investigation of Fabrication, Characterization and Property of Fuctional Titanium Dioxide Nanoporous Materials,TB383.1
  7. Study on Separation、 Preconcentration and Analysis of Trace Elements with Carbon Nanometer Materials,TB383.1
  8. The Research of the Sludge Characteristics in the Cephalosporin Intermediate Pharmaceutical Wastewater by the Treatment of the NMBR,X787
  9. Study on the Treatment of Coke Wastewater with Iron/Carbon/Fenton-biological Combination Processing,X784
  10. Research on Toxicity Identification and Reduction Technology for Petrochemical Industrial Drainage,X742
  11. Preparation of One-dimensional Nano TiO2 and Study on the Decolorization of Dyeing Wastewater,TB383.1
  12. Selection and Optimization of Control Technics in CODCr and Colority of the Refined Cotton Wastewater Treatment Process in a Refined Cotton Enterprise in Rudong, Jiangsu Province,X791
  13. Experimental Study of Improved UASB Reactor Treatment of Organic Wastewater,X703
  14. Application of Charcoal Loaded Catalyst for Treatment of Organic Pollutants,X703
  15. Treatment of High Concentration Oil-Bearing Wastewater in Food Industry with Membrane Biofilm Reactor (MBR),X792
  16. Research on the Efficiency of Circle-Flow Constructed Wetland Process for Swine Wastewater Treatment and Zeolite Regeneration,X713
  17. Research on Absorption of Nitrogen and Phospaorus and Purifying Effect in Swine Wastewater by Pasplum Distichum L.,X713
  18. The Effect and Influence Factors of Novel Loop Membrane Bioreactor for Treating the Cephalosporin Intermediate Wastewater,X787
  19. Treatment of Tannery Wastewater by Combined Process of Two-stage H/O and Ecological Pond: Study and Practice,X794
  20. Studies on Ecologic Purification and Resource Utilization of Turtle Aquaculture Wastewater,X714
  21. The Preliminary Study of the pcDNA3.1(+)-SjP14 Nanometer Microballoon-DNA Vaccines,R392.1

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