This document discusses photocatalysts, which are compounds that initiate or accelerate chemical reactions when activated by light. It provides examples of photocatalyst applications such as deodorization, antibacterial effects, water treatment, self-cleaning glass, water splitting to produce hydrogen, solar water disinfection, methane production from carbon monoxide, sterilization of surgical instruments, removal of fingerprints, decomposition of crude oil, and many others. The document explains that photocatalysts work by producing strong hydroxyl and oxygen radicals when activated by light that can destroy organic contaminants and convert them to harmless carbon dioxide and water.

1. PHOTOCATALYST
Principle and application
Made by : Fajar Budi Laksono

2. PHOTO CATALYST
Energy in the form of light Compund which initiate reaction/ make reaction faster

3. Principle of PHOTOCATALYST
Light Source
Catalyst
Reaction
HAPPEN!!!

4. Deodorization Anti-Bacteria Water treatment Dirtiness prevention
Advantegous of PHOTOCATALYST

5. How PHOTOCATALYST works??

6. PHOTOCATALYST reaction
make radical hydroxyl (OH-) and
radical O2 with very strong

7. Radical hydroxyl (OH-) and radical O2 with very strong will
Destroy all and other organic contaminants into CO2 and H2O

8. Radical Oxygen
Radical
Hydroxyl
Valence Band
Conduction Band

9. Why PHOTOCATALYST ???

10. PHOTOCATALYST
is Energy Saving
Photocatalyst can be initiate by UV lamp and visible lamp

11. PHOTOCATALYST is
Relatively Cheap
Photocatalyst raw material is relatively cheap

12. PHOTOCATALYST
is Sustainable
Only need one time doping and never run out

13. PHOTOCATALYST is
Environmentally Friendly
Photocatalyst convert hazardous organic contaminants and
bacteria into harmless substance CO2 and H2O

14. PHOTOCATALYST
APPLICATION

15. SELFCLEANING GLASS
Doping with nanoparticle photocatalyst made the glass
hydrophobic and photocatalyst destroy the bacteria or
other contaminants so glass always clean.

16. PHOTOCATALYTIC
WATER SPLITTING
Photocatalyst convert H2O into H2 through oxidation
process with the light irradiation. The example of efficient
photocatalyst in the UV range is based on a sodium
tantalite (NaTaO3) doped with La and loaded with a
cocatalyst nickel oxide.

17. SODIS
SOLAR WATER DISINFECTION
Disinfection of water by supported photocatalysts. Photocatalyst
reaction kill the bacteria inside the water with oxidation process.

18. CONVERTION of into
gaseous in the
presence of water
At present, proposed reaction mechanisms usually suggest the
creation of a highly reactive carbon radical from carbon monoxide and
carbon dioxide which then reacts with the photogenerated protons to
ultimately form methane.

19. STERILIZATION of
Surgical Instruments And Removal Of Unwanted Fingerprints From
Sensitive Electrical And Optical Components
Contaminants can be removed by UV light irradiation wtih the presence of photocatalyst

20. CRUDE OIL DECOMPOSITION
By using photocatalysts and UV-A radiation from the sun, the hydrocarbons
found in crude oil can be turned into H2O and CO2.

21. And many others PHOTOCATALYST APPLICATION

22. PHOTOCATALYST and NANOTECHNOLOGY will be
more advance time by the time.

23. LETS BE PART OF IT!!!

24. THANK YOU Made by : Fajar Budi Laksono