Water purification
Hydrogen peroxide

Hydrogen peroxide (H O) is a common disinfectant that can purify water. It is typically produced at chemical plants and transported to the contaminated water. An alternative approach employs a gold-palladium catalyst to synthesize H O from ambient hydrogen and oxygen atoms at the use site. The latter was reported to be faster and 10 times more potent at killing Escherichia coli than commercial H O, and over 10 times more effective than chlorine The catalytic reaction also produces reactive oxygen species (ROS) that bind and degrade other compounds.
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