oxidant

This is possible because the photocatalyst acts as an "electron shuttle," taking electrons or donating them to material in the presence of sacrificial weak oxidants or reductants.

Cooking foods can release brown carbon, molecules with the potential to create oxidants when they absorb light.

Only a few transition metal complexes with Earth-abundant metal ions have so far advanced to excited state oxidants, including chromium, iron, and cobalt.

On Earth, the development of technology demanded easy access to open-air combustion -- the process at the heart of fire, in which something is burned by combining a fuel and an oxidant, usually oxygen.

The volatile “olefin” part of the chemical reacts with hydroxyl radicals, highly reactive oxidants known to degrade air pollutants.