Hydrogen peroxide can be related to the generation of highly reactive hydroxyl radicals in presence of photocatalyst thereby improving its photocatalytic activity in uv light.
my question....
How can prove that the dissolution of the dye as the result of the effect of Photocatalytic Activity of nanoparticles not only the effect of peroxide alone?
Hello Mohammed Masood,
You can measure the effect of H2O2 alone and evaluate its performance in dye removal. After that, you can add the nanoparticles so you can evaluate the improvement done by the nanoparticle in the solution.
hello Amany Fouad ...
thank you for your answer
H2O2 is good oxidizing agent in present of UV ray ...
my problem ...
H2O2 + uv ray + dye ..........> decomposed of dye
and when add nanoparticles
H2O2 + uv ray + dye + nanoparticles ..........> decomposed of dye
my question .......
how can prove that the nanoparticle response for photodegradation of dye not by the effect H2O2 in the solution.????????
Mohammed Masood
Your query is not clear. What i understood from your question, you can try this:
H2O2 + Dye
Nanoparticles + Dye
Nanoparticles + Dye + UV
Hope you got the answer
hello Aarif-Shah ...
thank you for your answer and your interesting for my question
my problem ...
Nanoparticles + Dye + UV.........>slightly decomposed of dye
and when add H2O2
H2O2 + uv ray + dye + nanoparticles ..........> decomposed of dye
to explain the effect of H2O2 alone with dye without nanoparticles
H2O2 + uv ray + dye ..........> decomposed of dye
my question .......
how can prove that the nanoparticle response for photodegradation of dye not by the effect H2O2 in the solution.????????
Mohammed Masood
Share the degradation data. From the degradation data, we can derive the conclusion.
It has been demonstrated that removing dangerous organic species from water can be accomplished with the use of H2O2 and photocatalyst. H2O2 can promote the generation of hydroxyl radicals and impede the surface recombination of electron-hole pairs.H2O2 increases the concentration of the ·OH and ·O2 radicals in photocatalytic systems by its reactivity with the valence band holes and conduction band electrons. Further radicals can be produced by the reaction of H2O2 with ·OH, HO2·, or ·O2 radicals . To form O2, the oxidative species interact with one other or with the holes they make. Additionally, hydroxyl radicals are formed when H2O2 is exposed to UV-vis radiations.
Costa, E. P. et al. New trend on open solar photoreactors to treat micropollutants by photo-Fenton at circumneutral pH: Increasing optical pathway. Chem. Eng. J. 385, 123982 (2020).
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