it's a very strange description of 'photosynthesis'
Article says "[Plants] capture photons of sunlight and use that energy to split water molecules into their constituents of hydrogen and oxygen ions. "
umm, no they don't. Plants use the energy from sunlight to combine carbon dioxide from the atmosphere and water (both from the atmosphere and the root system) to produce sugars of various kinds, which are used as fuel to 'power' the plant and as basic organic molecules to make fats/lipids to build its tissues. Hydrogen gas doesn't come into it, though hydrogen ions (from the water) are used. You can't make sugars without hydrogen (and carbon).
What's described might be a kind of photosynthesis, because it synthesises using light - but it's not "photosynthesis", which is peculiar to plants.
