Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 29, Pages 8480-8484Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201502319
Keywords
carbon dioxide; Cu2O nanowire arrays; gold; graphene layers; photoreduction
Categories
Funding
- National Science Foundation of China [51472027]
- Beijing High School Youth Talent Plan [YETP0351]
- National Basic Research Program of China (973 Program) [2013CB632404]
- Japan Society for the Promotion of Science (JSPS)
- Grants-in-Aid for Scientific Research [14F03902] Funding Source: KAKEN
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The photochemical conversion of carbon dioxide provides a straightforward and effective strategy for the highly efficient production of solar fuels with high solar-light utilization efficiency. However, the high recombination rate of photoexcited electron-hole (e-h) pairs and the poor photostability have greatly limited their practical applications. Herein, a practical strategy is proposed to facilitate the separation of e-h pairs and enhance the photostability in a semiconductor by the use of a Schottky junction in a bimetal-graphene-semiconductor stack array. Importantly, Au-Cu nanoalloys (ca. 3 nm) supported on a 3D ultrathin graphene shell encapsulating a p-type Cu2O coaxial nanowire array promotes the stable photochemical reduction of CO2 to methanol by the synergetic catalytic effect of interfacial modulation and charge-transfer channel design. This work provides a promising lead for the development of practical catalysts for sustainable fuel synthesis.
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