Light assisted CO^sub 2^ reduction with methane over group VIII metals: Universality of metal localized surface plasmon resonance in reactant activation

Photo-catalytically reducing the greenhouse gas CO2 into valuable compounds is beneficial for environmental protection. In this study, a recently developed novel CO2 photoreduction approach, light assisted thermal-driven CO2 reforming with CH4 into syngas (DRM), is adopted as the target reaction, wi...

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Bibliographic Details
Published in:Applied catalysis. B, Environmental Environmental, 2017-07, Vol.209, p.183
Main Authors: Liu, Huimin, Dao, Thang Duy, Liu, Lequan, Meng, Xianguang, Nagao, Tadaaki, Ye, Jinhua
Format: Article
Language:English
Subjects:
Activation
Activation analysis
Air pollution
Aluminum oxide
Beryllium
Carbon dioxide
Catalysts
Electromagnetic fields
Emissions control
Environmental protection
Greenhouse effect
Greenhouse gases
Iron
Irradiation
Light irradiation
Metals
Methane
Nickel
Photocatalysis
Photochemistry
Photoreduction
Promoters
Reforming
Resonance
Studies
Surface plasmon resonance
Synthetic fuels
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Summary:Photo-catalytically reducing the greenhouse gas CO2 into valuable compounds is beneficial for environmental protection. In this study, a recently developed novel CO2 photoreduction approach, light assisted thermal-driven CO2 reforming with CH4 into syngas (DRM), is adopted as the target reaction, with group VIII metals, especially Ni/Al2O3, as the probe catalysts. With light introduction, the activities of Ni/Al2O3 nearly linearly increased and the increments were in highly correspondence to the intensity of the electromagnetic field induced by two adjacent Ni particles, together with the wavelength-dependent performances over 10Ni/Al2O3, it indicated it was Ni localized surface plasmon resonance (LSPR) that improved the performances. The LSPR enhanced catalytic performance could also be observed over other group VIII metals, such as Rh- and Fe- based catalysts, and the universality of reactant activation by metal LSPR could be expected. This study firstly revealed that not merely limited to IB metals, group VIII metals could also be adopted as plasmonic promoters and enhance the activity of a catalyst with light irradiation.
ISSN:0926-3373
1873-3883