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بررسی سینتیک تخریب آلاینده های زیست محیطی در حضور نانوذرات دی اکسید تیتانیوم بر روی نانولوله های کربن
راشدی، زهرا Rashedi, Zahra
Kinetic Investigation of the Degradation of Environmental Pollutant in the Presence of TiO2 Nanoparticle on Carbon Nanotube
Rashedi, Zahra | 2011
1016
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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 44654 (03)
- University: Sharif University of Technology
- Department: Chemistry
- Advisor(s): Gholami, Mohammad Reza; Rahman Setayesh, Shahrbanoo
- Abstract:
- The present work is based on the, synthesis and investigation of photocatalytic activity of TiO2, TiO2/MWCNT, ZnO and ZnO/MWCNT nanostructures. The nanostructures were prepared using multi-walled carbonnanotubes (MWCNT) as templates.The SEM images of TiO2 and ZnO nanoparticles and TiO2/MWCNT andZnO/MWCNT showed that nanosize TiO2 and ZnO particles homogeneously and densely supported on the surfaces of multiwall carbon nanotubes the photocatalytic activity of the TiO2, TiO2 /MWCNT, ZnO and ZnO/MWCNT was examined by the degradation of Basic Blue 41(BB41) under UV and Vis lights. The optimum conditions for degradation of BB41 on TiO2 where found to be: calcination temperature (450 °C), dye concentration (10ppm), amount of photocatalyst (150ppm), and pH(8).The result also showed that the TiO2/ 5%- MWCNT has a higher rate constant and efficiently for BB41 degradation. The optimum conditions for degradation of BB41 on ZnO where found to be: calcination temperature (450 °C), dye concentration (10ppm), amount of photocatalyst (40ppm), and pH(6.5).The result also showed that the ZnO / 5%- MWCNT has a higher rate constant and efficiently for BB41 degradation
- Keywords:
- Titanium Dioxide Nanoparticles ; Carbon Nanotubes ; Photocatalytic Degradation ; Zinc Oxide Nanoparticles ; Basic Blue 41 Color ; Environmental Pollutant
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