Recent advances towards aqueous hydrogen peroxide formation in a direct current plasma–liquid system
The aqueous phase hydrogen peroxide (H
2
O
2aq
) produced from the plasma–liquid interactions can directly or synergistically (with other substances) affect the liquid chemistry, and therefore it is important to unfold the H
2
O
2aq
formation mechanism. However, up to now, a consensus on the H
2
O
2aq
formation mechanism is not reached. This review aims to survey the recent advances on the understanding of the H
2
O
2aq
formation mechanism in the system of a direct current discharge plasma operated over a liquid electrode. Theoretical and experimental analyses indicate that the recombination of dissolved OH radicals (OH
aq
) is the dominant process for the H
2
O
2aq
formation, while the purported plasma‐induced photolysis of water and the dissolution of gaseous H
2
O
2
are ruled out.
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Stavros-Alexandros Theofanidis, Amvrosios G. Georgiadis · 2025
- Published
- Jan 30, 2022
- Vol/Issue
- 7(3)
- Pages
- 405-419
- License
- View
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