Bi Single-Atom In2S3 Photocatalyst

H2O2 from Pure Water

Dual-function p-block single atoms as catalytic centers and electronic modulators enable efficient two-electron oxygen reduction for hydrogen peroxide synthesis in pure water.

Dongdong, Chu · Dayu, Sun · Ling, Lan

Angewandte Chemie - International Edition 2026

Specifications

H2O2 production rate

{'zh': '368.8', 'en': '368.8'} µM h-1

Advantages

Faster charge separation

Bi-S coordination motifs promote interfacial charge separation, reducing recombination and providing more electrons for ORR.

Favorable O2 adsorption

Bi single atoms induce Pauling-type O2 adsorption, significantly lowering the *OOH formation barrier and directing the reaction along the selective 2e− ORR pathway.

Outperforms most peers

The H2O2 production rate of 368.8 µM h−1 in pure water exceeds pristine In2S3 and most reported inorganic photocatalysts.

Applications

• Artificial Photosynthesis：Photosynthesize H2O2 from pure water, replacing complex O2 reduction processes.
• Solar Fuels：Store solar energy in H2O2 molecules as a transportable solar fuel.
• Green Oxidant Synthesis：On-site production of green oxidant H2O2, avoiding risks of transporting concentrated H2O2.
• Photocatalytic Water Treatment：Use photocatalytically generated H2O2 to degrade pollutants in water treatment.