Water splitting

Water splitting is the general term for a chemical reaction in which water is converted into oxygen and hydrogen. Water splitting is actively researched because demand for cheap hydrogen is expected to rise with the new hydrogen economy.

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Current water splitting methods include

• electrolysis
• thermolysis at 2500°C or above.

Active research

• thermochemical water splitting with the sulfur-iodine cycle
• water splitting by photocatalysis (artificial photosynthesis) ^[1]
• High-temperature electrolysis
• thermolysis on defective carbon substrates, thus making hydrogen production possible at temperatures just under 1000°C ^[2]

Water splitting also donates electrons to power the electron transport chain in photophosphorylation of photosynthesis. Various techniques for water splitting have been issued water splitting patents ^[3] in the United States.

References

See also

• Water gas shift reaction