Photocatalytic remote oxidation induced by visible light

Fei Yang; Yukina Takahashi; Nobuyuki Sakai; Tetsu Tatsuma

doi:10.1021/jp205600m

Photocatalytic remote oxidation induced by visible light

Fei Yang, Yukina Takahashi, Nobuyuki Sakai, Tetsu Tatsuma

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Photocatalytic remote oxidation was examined under visible light by using WO₃-based photocatalysts: WO₃, WO₃ modified with Pt nanoparticles (Pt-WO₃), and WO₃ modified with Cu(II) ions (Cu(II)-WO₃). Alkyl chains on a glass plate separated from the photocatalyst by 7.5 μm thick air were removed in 40 min under visible light (≥420 nm, ∼100 mW cm^-2). Among the photocatalysts examined, Pt-WO₃ exhibits the highest remote oxidation activity. Its activity is higher than that of TiO₂ modified with Pt nanoparticles in the wavelength range 360-460 nm. It is likely that Pt-WO ₃ emits ^·OH under visible light, which diffuses in air and attacks alkyl chains, whereas the major path of the remote oxidation induced by UV light involves emission of H₂O₂ and its photocleavage into ^·OH. Remote storage of oxidative energy in Ni(OH)₂ is also possible by using visible light-irradiated Pt-WO ₃.

Original language	English
Pages (from-to)	18270-18274
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	115
Issue number	37
DOIs	https://doi.org/10.1021/jp205600m
Publication status	Published - Sep 22 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/jp205600m

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title = "Photocatalytic remote oxidation induced by visible light",

abstract = "Photocatalytic remote oxidation was examined under visible light by using WO3-based photocatalysts: WO3, WO3 modified with Pt nanoparticles (Pt-WO3), and WO3 modified with Cu(II) ions (Cu(II)-WO3). Alkyl chains on a glass plate separated from the photocatalyst by 7.5 μm thick air were removed in 40 min under visible light (≥420 nm, ∼100 mW cm-2). Among the photocatalysts examined, Pt-WO3 exhibits the highest remote oxidation activity. Its activity is higher than that of TiO2 modified with Pt nanoparticles in the wavelength range 360-460 nm. It is likely that Pt-WO 3 emits ·OH under visible light, which diffuses in air and attacks alkyl chains, whereas the major path of the remote oxidation induced by UV light involves emission of H2O2 and its photocleavage into ·OH. Remote storage of oxidative energy in Ni(OH)2 is also possible by using visible light-irradiated Pt-WO 3.",

author = "Fei Yang and Yukina Takahashi and Nobuyuki Sakai and Tetsu Tatsuma",

year = "2011",

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T1 - Photocatalytic remote oxidation induced by visible light

AU - Yang, Fei

AU - Takahashi, Yukina

AU - Sakai, Nobuyuki

AU - Tatsuma, Tetsu

PY - 2011/9/22

Y1 - 2011/9/22

N2 - Photocatalytic remote oxidation was examined under visible light by using WO3-based photocatalysts: WO3, WO3 modified with Pt nanoparticles (Pt-WO3), and WO3 modified with Cu(II) ions (Cu(II)-WO3). Alkyl chains on a glass plate separated from the photocatalyst by 7.5 μm thick air were removed in 40 min under visible light (≥420 nm, ∼100 mW cm-2). Among the photocatalysts examined, Pt-WO3 exhibits the highest remote oxidation activity. Its activity is higher than that of TiO2 modified with Pt nanoparticles in the wavelength range 360-460 nm. It is likely that Pt-WO 3 emits ·OH under visible light, which diffuses in air and attacks alkyl chains, whereas the major path of the remote oxidation induced by UV light involves emission of H2O2 and its photocleavage into ·OH. Remote storage of oxidative energy in Ni(OH)2 is also possible by using visible light-irradiated Pt-WO 3.

AB - Photocatalytic remote oxidation was examined under visible light by using WO3-based photocatalysts: WO3, WO3 modified with Pt nanoparticles (Pt-WO3), and WO3 modified with Cu(II) ions (Cu(II)-WO3). Alkyl chains on a glass plate separated from the photocatalyst by 7.5 μm thick air were removed in 40 min under visible light (≥420 nm, ∼100 mW cm-2). Among the photocatalysts examined, Pt-WO3 exhibits the highest remote oxidation activity. Its activity is higher than that of TiO2 modified with Pt nanoparticles in the wavelength range 360-460 nm. It is likely that Pt-WO 3 emits ·OH under visible light, which diffuses in air and attacks alkyl chains, whereas the major path of the remote oxidation induced by UV light involves emission of H2O2 and its photocleavage into ·OH. Remote storage of oxidative energy in Ni(OH)2 is also possible by using visible light-irradiated Pt-WO 3.

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Photocatalytic remote oxidation induced by visible light

Abstract

All Science Journal Classification (ASJC) codes

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