Beyond hydrogen production: Solar−driven H₂S−donating value−added chemical production over Mn_xCd_1−xS/Cd_yMn_1−yS catalyst

Simultaneous hydrogen (H₂) evolution and value−added chemicals production are highly attractive but have not drawn enough attention. Here, we demonstrate a hydrogen sulphide (H₂S)−induced product−targeting (HIPT) strategy for the coproduction of H₂ and valuable chemical feedstocks from Na₂S/Na₂SO₃ via overall H₂S splitting using a Mn_xCd_1−xS/Cd_yMn_1−yS catalyst driven by visible light excitation. With this chemistry, 113 mmol g⁻¹ h⁻¹ of hydrogen evolution rate is achieved, surpassing most of the previously reported state-of-the-art photocatalyst, together with the production of value−added Na₂S₂O₃ with nearly 100% selectivity. This work not only provides a good example for solar energy conversion via overall H₂S splitting, but also offers new insights into the resource utilization of sacrificial donor (Na₂S/Na₂SO₃) in various catalytic fields such as H₂O splitting and CO₂ reduction.