Mod-04 Lec-29 Photocatalysis - I

Nano structured materials-synthesis, properties, self assembly and applications by Prof. A.K. Ganguli,Department of Nanotechnology,IIT Delhi.For more details on NPTEL visit nptel.ac.in

[@NanoDataAnalysts]

Thank you Prof. very informative lecture, I want to know about the electron storage inside the photocatalyst, as now a days more research is done on trapping/storing the electron so could be used in the absence of light, can you please explain the phenomenon and what kind of materials can be used for storing electrons.

[@VenuGopal-lg5gl]

Main uses tapping and stoting in the absence of light what materials can we used plz briefly explain

[@dillonnys7707]

Excellent. Thank you so much.

[@doaadoaa6403]

Thanks for the valuable lecture.

[@Glucoperon]

Wonderful lecture!

[@amolkahandal6905]

Wonderful... How to synthesize doped oxide nanoparticles

[@KyawAungHein]

Please sir! which types of defect occur in semiconductor CuO and NiO during photo-catalysis?

[@sumankahandal8069]

very informative Lecture .Thank you sir .

[@keonwoo524]

Thank you so much..

[@oussamaezzaher4950]

how does crystallnity affects carrier mobility?

[@hingevikram2977]

At 33:10 these are isotope of Chlorine not a Iodine

[@harshita8401]

Good one! :)

[@jacquelinemascarenhas3346]

Thank you very much

[@raymondshikuku8726]

Thank you

[@preetipatel6082]

Is the splitting of water into oxygen and hydrogen are formed in the same chamber or not???

[@AlyRedaAli]

IT MAY BE HAPPENS IF U USE PHOTO-CATALYSIS POWDER

[@muhammadtayyab959]

It’s depend on the instrument which one is you are using.

[@Doctor_Drew]

very interesting. thank you

[@sumadevikr4274]

Sir send me all the episode of photocatalyst nps

[@c.parvathiraja2976]

Are you working in photocatalyst

[@karthikachandrakabbinahith6773]

54:49 i didn't understand this part. can anybody please explain?

[@bekelchatesfaye3289]

When the ionic character of the M-O bond increase, the top of the valence band (VBmax) become less positive and the bottom of the conduction band (CBmin) become less negative; compared to RHE. This lowers the redox potential of the CB electrons and VB holes. You want your CBmin to be more negative than the reduction potential of water(H+/H2) and VBmax to be more positive than water oxidation potential (H2O/O2). I hope this helps. However, I didn't yet understand how the ionic character affects the band positions.

[@karthikachandrakabbinahith6773]

@@bekelchatesfaye3289 Thank You