ı would to ask about photocatalysis of TiO2 FOR AİR PURİFİCATION because ı do a research about it. now i am thinking to do ag-tio2-sio2 as a catalyst ı need to synthesis method of Ag-TiO2-SiO2 in lab
Reham Dabboura You need to select the precursors that will yield Ag, TiO2 and SiO2. You also need to select the percentage of each of these that you want in the final composite. Your question needs more information for getting a specific response. For TiO2, you can use titanium isopropoxide or butoxide as precursor.
TiO2 is used as photocatalysis for water purification rather than air purification.
Madhukar Baburao Deshmukh thank you for your answer
tio2 Won't it give a good result for air purification?
Reham Dabboura
I don't understand what you mean by 'air purification'. Does this involve removing particulate matter (e.g. PM2.5) , CO2, NOx, or what? Attached on PM's.
In terms of the catalyst then it seems your in the supported catalyst region where absorption of an appropriate precursor (for Ag often Ag(NH3)2+), in the correct concentration for say a 5% loading, on the dried support (of known pore volume). This would be followed by an appropriate reduction step for which I recommend dilute hydrazine hydrate or H2. For generalities on supported Ag catalysts see (registration required):
Silver colloids and invisible ink
https://www.malvernpanalytical.com/en/learn/events-and-training/webinars/W150902SilverColloidInvisibleInk.html
and on metal colloids see:
Metal colloids - their preparation, application and characterization
https://www.malvernpanalytical.com/en/learn/events-and-training/webinars/W160218MetalColloids.html
For the support sol-gel (for TiO2 the isopropoxide route is extensively used) has been suggested above. Personally I'd buy in an appropriate TiO2 and combine it with an appropriate silica sol-gel precursor.
Dear Reham Dabboura thank you for your interesting technical question. Please have a look at the following useful articles which might help you in your analysis:
Photocatalytic air purifiers
https://www.explainthatstuff.com/how-photocatalytic-air-purifiers-work.html
in this link the basics of photocatalytic air purification are explained.
Photocatalytic Air Purification
Article Photocatalytic Air Purification
Modified TiO2 based photocatalysts for improved air and health quality
Article Modified TiO2 based photocatalysts for improved air and health quality
Both articles are freely available as public full texts on RG.
- Badges
- Science method
- Similar topics
- Biological Science
- Ecology