Photocatalytic methane conversion coupled with hydrogen evolution from water over Pd/TiO2. Issue 3 (17th January 2017)

• Record Type: Journal Article
• Authors: Yu, Linhui; Li, Danzhen
• Is Part Of: Catalysis science & technology. Volume 7:Issue 3(2017)
• Page Start: 635
• Page End: 640
• Publication Date: 2017-01-17
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/c6cy02435a
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : A new photocatalytic reaction system involving H2 evolution from aqueous water and CH4 conversion is established over Pd/TiO2 . 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.