Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 3, Pages 841-845Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201409183
Keywords
Au-Cu cocatalyst; CO2 conversion; nanotube arrays; photocatalysis; solar fuel
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Funding
- World Premier International Research Center Initiative (WPI Initiative) on Materials Nanoarchitectonics (MANA)
- MEXT (Japan)
- National Basic Research Program of China (973 Program) [2014CB239301]
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Efficient photocatalytic conversion of CO2 into CO and hydrocarbons by hydrous hydrazine (N2H4 center dot H2O) is achieved on SrTiO3/TiO2 coaxial nanotube arrays loaded with Au-Cu bimetallic alloy nanoparticles. The synergetic catalytic effect by the Au-Cu alloy nanoparticles and the fast electron-transfer in SrTiO3/TiO2 coaxial nanoarchitecture are the main reasons for the efficiency, while N2H4 center dot H2O as the H source and electron donor provides a reducing atmosphere to protect the surface Cu atoms from oxidation, therefore maintaining the alloying effect which is the basis for the high photocatalytic activity and stability. This approach opens a feasible route to enhance the photocatalytic efficiency, which also benefits the development of photocatalysts and co-catalysts.
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