What are advantages and disadvantages of Oxygen Vacancy defects in nanoparticles?

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Shaida Kakil

Dear JayaKumar G

1-the oxygen vacancy mean the absence of oxygen atom from the crystal lattice, negative charge carriers will be withdrawn to the vacancy site and increase the local charge density . So, the energy level of oxygen vacancy can serve as electron donor states to contribute to bandgap narrowing for visible-light harvest.

2- the oxygen vacancy plays a very important role in mediating photogenerated electron-hole separation and surface charge transfer in photocatalytic processe

3- surface oxygen vacancy also serves as excellent sites for molecular O2 adsorption and activation

you can see this it is so important

https://www.sciencedirect.com/topics/materials-science/oxygen-vacancy

I hope it is help to you