Hybrid Nano-Bio Nanosheets Yield Hydrogen Peroxide at Ambient Conditions

A research team led by the U.S. Department of Energy’s Argonne National Laboratory has created a hybrid material that converts sunlight, air and water into hydrogen peroxide. The system combines bismuth oxychloride (BiOCl) nanosheets with patches of a purple membrane (PM) derived from halophilic archaea. When illuminated, the biological membrane functions as a solar-driven catalyst, enabling the semiconductor to reduce dioxygen and water to hydrogen peroxide under ambient conditions.

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The BiOCl nanosheets are about 200 nm thick—roughly 500 times thinner than a human hair—and are layered with PM patches. Light absorbed by the PM drives proton and electron transfer at the BiOCl interface, effecting a two-electron, two-proton reduction of oxygen to hydrogen peroxide while simultaneously converting ethylene glycol into value-added chemicals.

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According to the research team’s press release, the hybrid nanosheets produced more than five times the amount of hydrogen peroxide compared with BiOCl alone. The process operates at ambient temperature and pressure, using only inexpensive, abundant materials, and avoids the high-energy inputs and complex catalysts required for conventional industrial production.

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Elena Rozhkova, a scientist at the Center for Nanoscale Materials (CNM), emphasized that the system’s mild operating conditions and low-cost inputs could make large-scale hydrogen peroxide synthesis more sustainable.

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• “Our system operates at ambient conditions and uses only inexpensive, abundant materials,” — Elena Rozhkova

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