Plasmonic Titanium Nitride Facilitates Indium Oxide CO2 Photocatalysis. Issue 49 (17th November 2020)

• Record Type: Journal Article
• Authors: Nguyen, Nhat Truong; Yan, Tingjiang; Wang, Lu; Loh, Joel Yi Yang; Duchesne, Paul N.; Mao, Chengliang; Li, Pei‐Cheng; Jelle, Abdinoor A.; Xia, Meikun; Ghoussoub, Mireille; Kherani, Nazir P.; Lu, Zheng‐Hong; Ozin, Geoffrey A.
• Is Part Of: Small. Volume 16:Issue 49(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-11-17
• Subjects: CO 2 photocatalysis -- indium oxide -- photothermal -- plasmon resonance -- titanium nitride; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.202005754
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: 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, In2 O3− 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 @In2 O3− x (OH) y are combined. This heterostructured material synergistically couples the metallic TiN and semiconducting In2 O3− 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. Abstract : TiN@TiO2 @In2 O3− x (OH) y combines the benefits of surface plasmon and photothermal effect of TiN, interfacial charge transfer TiO2 layer, and photocatalyzing In2 O3− x (OH) y . The choice and precise arrangement of three components allow for a controlled flow of photogenerated electrons and phonons that drives CO2 hydrogenation reaction at an elevated rate which excels its individual and binary components.