A Practical Examination of the Antibacterial and Absorption Effect of Bioceramic Apatite-Coated TiO2 as a Modified Nanophotocatalyst

Azimzadeh Irani, Maryam |

659 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 39005 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Gholami, Mohammad Reza; Haghighi, Saeed
  7. Abstract:
  8. Ag / AgCl /TiO2 , 2 Ap / Ag / AgCl /TiO , 2 AgI /TiO and 2 Ap / AgI /TiO were prepared by the deposition-precipitation method on 2TiO (P25) nanoparticles and their photocatalyctic activities have been investigated under visible light and dark environments. Cationic surfactant plus 2 PVPI (topical solution and dry powder) as an iodine ion source and nonionic surfactant plus KI as an iodide ion source were used to prepar 2 AgI /TiO . In less than 30 minutes, 2 AgI /TiO which has been resulted from combination of cationic surfactant and 2 PVPI showed high efficiency on Escherichia coli under visible light when small quantities of it is used . However, AgCl sample prepared with cationic surfactant showed instability under the same condition with visible light. Apatite also used and added to 2 Ag / AgCl /TiO and 2 AgI /TiO to examine the antibacterial effect with or without visible light. 2 Ap / Ag / AgCl /TiO showed favorable results with or without visible light, where 2 Ap / AgI /TiO exhibited unexpectedly good results even in dark media. As a result, the process shows very high efficient 2 AgI /TiO photocatalyst under visible light, where 2 Ap / Ag / AgCl /TiO and 2 Ap / AgI /TiO exhibit photocatalyctic activities in both visible light and dark environments
  9. Keywords:
  10. Photocatalyst ; Titanium NanoParticles ; Apatite ; Escherichia Coli Bacteria ; Antibacterial Activity

 Digital Object List

  • محتواي پايان نامه
  •   view