Exceptional enhancement of H{sub 2} production in alkaline environment over plasmonic Au/TiO{sub 2} photocatalyst under visible light
- Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo 060-0814 (Japan)
- Environmental Remediation Materials Unit and International Center for Materials Nanoarchitectonics (WPI-MANA), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
- TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072 (China)
A reaction environment modulation strategy was employed to promote the H{sub 2} production over plasmonic Au/semiconductor composites. It is shown that the fast consumption of the holes in plasmonic Au nanoparticles by methanol in alkaline reaction environment remarkably increases H{sub 2} generation rate under visible light. The photocatalytic reaction is mainly driven by the interband transition of plasmonic Au nanoparticles, and the apparent quantum efficiency of plasmon-assisted H{sub 2} production at pH 14 reaches 6% at 420 nm. The reaction environment control provides a simple and effective way for the highly efficient solar fuel production from biomass reforming through plasmonic photocatalysis in future.
- OSTI ID:
- 22415245
- Journal Information:
- APL materials, Vol. 3, Issue 10; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2166-532X
- Country of Publication:
- United States
- Language:
- English
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