What is the major drawback of QDs used as photocatalysts?

What is the major drawback of QDs used as photocatalysts? Correct Answer Electron hole pairs are formed in the QDs

There have been issues in the use of QDs as photocatalysts due to the presence of surfactants on their surfaces. The surfactants or ligands interfere with the chemical reactivity of the dots by slowing down mass and electron transfer processes. QDs made of metal chalcogenides are chemically unstable under oxidizing environment and undergo photo corrosion reactions.
Bissoy MCQ

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