Decomposition of an aqueous ammonia solution as a photon energy conversion reaction using a Ru-loaded ZnS photocatalyst.

Metal sulfides are an excellent material group for highly efficient water reduction to H2. We demonstrate the uphill reaction using a single-particulate metal sulfide photocatalyst. A Ru cocatalyst-loaded ZnS photocatalyst showed an activity for the decomposition of an aqueous solution into H2 and N2 under simulated sunlight irradiation.