Selective Dinitrogen Conversion to Ammonia Using Water and Visible Light through Plasmon-induced Charge Separation

The generation of ammonia from atmospheric nitrogen and water using sunlight is a preferable approach to obtaining ammonia as an energy carrier and potentially represents a new paradigm for achieving a low‐carbon and sustainable‐energy society. Herein, we report the selective conversion of dinitroge...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2016-03, Vol.55 (12), p.3942-3946
Main Authors: Oshikiri, Tomoya, Ueno, Kosei, Misawa, Hiroaki
Format: Article
Language:English
Subjects:
Ammonia
Carbon
Conversion
Direct power generation
Energy
Energy consumption
Gold
Irradiation
Light effects
Light irradiation
localized surface plasmon
Nanoparticles
nanostructures
Nitrogen
nitrogen fixation
Oxygen
photochemistry
Radiation
Renewable energy
Separation
Strontium
Strontium titanates
Sunlight
Zirconium
Zirconium oxides
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Summary:The generation of ammonia from atmospheric nitrogen and water using sunlight is a preferable approach to obtaining ammonia as an energy carrier and potentially represents a new paradigm for achieving a low‐carbon and sustainable‐energy society. Herein, we report the selective conversion of dinitrogen into ammonia through plasmon‐induced charge separation by using a strontium titanate (SrTiO3) photoelectrode loaded with gold nanoparticles (Au‐NPs) and a zirconium/zirconium oxide (Zr/ZrOx) thin film. We observed the simultaneous stoichiometric production of ammonia and oxygen from nitrogen and water under visible‐light irradiation. NH3 sees the light of day: A highly selective and visible‐light‐responsive plasmonic NH3 synthesis device containing a Au nanostructure and a Zr/ZrOx thin film was developed. N2 gas was reduced to NH3 by using water as an electron donor through plasmon‐induced charge separation under visible light irradiation.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201511189