Phys.org

Creating cleaner chemical reactions that run on oxygen and produce only water as waste

Oxygen provides the driving force for many vital chemical reactions. Two well-known examples include respiration, the process that allows living things to break down food to release its energy, and combustion, reactions that produce heat and light. But oxygen has an unusual electronic configuration that tends to slow reactions with organic matter, so reactions often need help to get started. In nature, specialized proteins called enzymes can activate oxygen on demand by first rearranging its electrons.