recombination process in nanoparticles photocatalyst can reduced activity of photocatalyst
Using a stabilizing agent and every nanoparticle with suitable stabilizing agent
it is preferred to be natural extract
Sahar,
You may provide more detail, like what photocatalyst material you have, what is your application, and in what configuration you are using these NPs (suspended or immobilized)?
regardless, the less the dimensions are, the lower the recombination losses are.
Depending on your situation and your needs, you could add some electron or hole scavenger, or charge carrier trap, e.g. dope your photocatalyst with some metal.
There are some strategies to decrease recombination of electron-hole pairs in heterogeneous photocatalytic processes. Doping of metallic and nonmetallic elements and combination of semiconductors with each other are of the best methods for increasing photocatalytic activity through suppression of the photogenerated charge carriers from recombination. For more information, please refer to the following papers:
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