Plasmon-enhanced UV photocatalysis

Journal Article · Mon Feb 10 04:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4864395· OSTI ID:22283167

Honda, Mitsuhiro; Saito, Yuika; Kawata, Satoshi ^[1]; Kumamoto, Yasuaki ^[2]; Taguchi, Atsushi ^[2]

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1. Department of Applied Physics, Osaka University, Suita, Osaka 565-0871 (Japan)
2. Nanophotonics Laboratory, RIKEN, Wako, Saitama 351-0198 (Japan)

We report plasmonic nanoparticle enhanced photocatalysis on titanium dioxide (TiO{sub 2}) in the deep-UV range. Aluminum (Al) nanoparticles fabricated on TiO{sub 2} film increases the reaction rate of photocatalysis by factors as high as 14 under UV irradiation in the range of 260–340 nm. The reaction efficiency has been determined by measuring the decolorization rate of methylene blue applied on the TiO{sub 2} substrate. The enhancement of photocatalysis shows particle size and excitation wavelength dependence, which can be explained by the surface plasmon resonance of Al nanoparticles.

• OSTI ID: 22283167
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 6 Vol. 104; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
ALUMINIUM
EFFICIENCY
EXCITATION
EXTREME ULTRAVIOLET RADIATION
FREQUENCY DEPENDENCE
IRRADIATION
METHYLENE BLUE
NANOSTRUCTURES
PARTICLE SIZE
PARTICLES
PHOTOCATALYSIS
PLASMONS
REACTION KINETICS
SUBSTRATES
SURFACES
THIN FILMS
TITANIUM OXIDES