Clever Catalyst Assigns Jobs to Gold and Platinum for Greener Chemistry

Chemists are seeking a more sustainable and direct route to synthesise hydrogen peroxide (H₂O₂), a widely used chemical. Traditional methods often rely on palladium-based catalysts—substances that speed up reactions—which unfortunately tend to break down the very H₂O₂ they help create, limiting their efficiency.

A new design detailed in a recent study avoids this problem with a clever division of labour. The novel catalyst uses single platinum atoms specifically to split hydrogen molecules, while separate gold nanoparticles hold oxygen molecules ready for reaction. This spatial separation of tasks prevents the over-hydrogenation that plagues older catalysts.

The results are impressive. This specialised organisation leads to almost perfect selectivity, meaning virtually no unwanted by-products are formed. Its productivity exceeds state-of-the-art formulations and it achieves H₂O₂ concentrations approaching 4%, double that generated in the initial phase of the incumbent industrial anthraquinone process.