PLASMA ENHANCED CHEMICAL VAPOR DEPOSITION

1. Synthesis And Characterization Of
Common Cheesecloth Deposited
with TiO2 via Physical Vapor
Deposition
Edna Mae D. Cruz
Freya Gay A. Jingco
Michelle Marie S. Villamayor
Henry J. Ramos

2. Flow of the Presentation
Introduction
Methodology
Results and Discussion
Conclusions
Acknowledgements

12. Introduction
DEMAND FOR CLEAN
WATER

13. Introduction continued…
Proposed solution:
 Collection of rainwater

14. Introduction continued…
 Decontamination of wastewater.
Laguna Wastewater Treatment PLant

15. Introduction continued…
Different Process of
Wastewater Treatment:
 Microorganism Method
 Adsorption Method
 Ion Exchange Method
 Photocatalysis

16. PHOTOCATALYSIS
- the acceleration of a photoreaction in
the presence of a catalyst.
- Activation using UV radiation of
titanium dioxide

17. Why Titania?
- It can either be diffused in the irradiated
solution as slurry or attached on a
suitable support as a fixed or fluidized
bed.

18. Requirements for a good Titania supporting material
(a) transparent to UV;
(b) favor strong physical-chemical bond
with the TiO2 without affecting their
reactivity;
(c) offer a high surface area;
(d) have good adsorption capability for
the organic compounds to be
degraded;

19. Requirements continued…
(e) flexible favoring the ultimate liquidsolid phase separation;
(f) allow mass transfer processes;
(g) chemically inert.

20. Methodology
1. Preparation of cheesecloth

21. 2. Deposition of TiO2 by PECVD
magnetron setup using Compact Plane
Magnetron (CPM) at the Plasma
Physics Laboratory - National Institute
of Physics (PPL-NIP).

22. Schematic Setup of the PECVD Magnetron Device

23. Summary of the parameters of the experiment

24. Results and Discussion
UNTREATED ↔ TREATED
Cutting
Easy ↔ hard
Wettability
Hydrophilic ↔ Super-hydrophilic
Colorfast
Fade ↔ brighten

25. Results and Discussion
Scanned Images of Tio2-coated Cotton Cloth

26. Results and Discussion
Pixel count tabulated using MS Excel

27. Results and Discussion
XRD patterns of the anatase TiO2 at different flow of current

28. Results and Discussion
FTIR – ATR spectra

29. Results and Discussion
SEM (1500 and 2000 x)

30. Results and Discussion
FESEM (5000 x) images

31. Results and Discussion
(a)
(b)
Energy-dispersive Xray Analysis

32. Results and Discussion
Thermo Gravimetric Analysis

33. Conclusion
TiO2-coated cheesecloth is
 low-cost
support
wastewater treatment
 light reactive
material
in
 current methods used to deposit TiO2 on
cloth generate acidic and chemical wastes
 simple (one-step-process) and
 environmentally friendly.

34. References
• J. M. Tupas, “Clear Plan to Avert Water Crisis Urged: The
Environment Report”, January 30, 2007. Retrieved from
http://www.inquirer.net/specialfeatures/theenvironmentreport/view.p
hp?db=1&story_id=46498
• S. M. Patrick, “The Coming Global Water Crisis”, May 9, 2012.
Retrieved fromhttp://www.theatlantic.com/
• J. Lijuan, W. Yajun, and F. Changgen, “Application of photocatalytic
technology in environmental safety”, Procedia Engineering 45, pp.
993 – 997, 2012.
• R. L. Pozzo, M. A. Baltanas and A. E Cassano, “Supported
titanium oxide as photocatalyst in water decontamination: State of
the art” Catalysis Today, Volume 39, Number 3, pp. 219-231, 17
December 1997.
• M. M. S. Villamayor, T. Nakajima, H. J. Ramos and M. Wada,
“Optical emission signatures of dual planar magnetron plasmas for
TiO2 deposition”, Plasma and Fusion Research: Regular Articles,
Volume 6, 2011.