Plasmonic Titanium Nitride Facilitates Indium Oxide Co2 Photocatalysis
SMALL(2020)
摘要
Nanoscale titanium nitride TiN is a metallic material that can effectively harvest sunlight over a broad spectral range and produce high local temperatures via the photothermal effect. Nanoscale indium oxide-hydroxide, In2O3-x(OH)(y), is a semiconducting material capable of photocatalyzing the hydrogenation of gaseous CO2; however, its wide electronic bandgap limits its absorption of photons to the ultraviolet region of the solar spectrum. Herein, the benefits of both nanomaterials in a ternary heterostructure: TiN@TiO2@In2O3-x(OH)(y) are combined. This heterostructured material synergistically couples the metallic TiN and semiconducting In2O3-x(OH)(y) phases via an interfacial semiconducting TiO2 layer, allowing it to drive the light-assisted reverse water gas shift reaction at a conversion rate greatly surpassing that of its individual components or any binary combinations thereof.
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关键词
CO, (2) photocatalysis, indium oxide, photothermal, plasmon resonance, titanium nitride
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