SCHEDULED MAINTENANCE
Photocatalytic methane conversion coupled with hydrogen evolution from water over Pd/TiO2†
*a
Abstract
The pursuit for efficient conversion of methane under ambient conditions remains a challenge, and the photocatalytic splitting of water into H2 is a hot research topic since H2 is considered to be the cleanest energy. Here, the two reactions are introduced into one photocatalytic system, which achieves the simultaneous utilization of photo-induced electrons and holes. The mechanism results demonstrate that photo-induced electrons contribute to the production of H2, while holes contribute to the conversion of CH4. This work provides a new strategy for photocatalytic reactions, and provides considerable quantum efficiencies for electrons of 2.83% (without a sacrificial agent) and holes of 2.76%. In view of the closed values of the quantum efficiencies for the two original photo-induced species, it is believed that the separated electrons and holes are more effectively utilized.
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