Enhanced CO2 Photocatalysis by Indium Oxide Hydroxide Supported on TiN@TiO2 Nanotubes

• DOI: 10.1021/acs.nanolett.0c04008
• Publication Date: 2021-01-26T00:21:45Z
• Authors: Nhat Truong Nguyen; Meikun Xia; Paul N. Duchesne; Lu Wang; Chengliang Mao; Feysal M. Ali; Tingjiang Yan; Peicheng Li; Zheng-Hong Lu; Geoffrey A. Ozin
• Keywords: y nanoparticles; Chemical Sciences not elsewhere classified; y nanoparticulate shell; OH; TiO 2 nanoparticulate; Computational Biology; photocatalytic; 01 natural sciences; 7. Clean energy; CO production rate; TiO 2 nanoparticle layer supplies p.; 0104 chemical sciences; 1 D TiN nanotubes; Space Science; water gas shift reaction; Enhanced CO 2 Photocatalysis; ternary heterostructured catalyst; Medicine; Indium Oxide Hydroxide; CO 2 photocatalysis; Biotechnology

Herein is developed a ternary heterostructured catalyst, based on a periodic array of 1D TiN nanotubes, with a TiO2 nanoparticulate intermediate layer and a In2O3-x(OH)y nanoparticulate shell for improved performance in the photocatalytic reverse water gas shift reaction. It is demonstrated that the ordering of the three components in the heterostructure sensitively determine its activity in CO2 photocatalysis. Specifically, TiN nanotubes not only provide a photothermal driving force for the photocatalytic reaction, owing to their strong optical absorption properties, but they also serve as a crucial scaffold for minimizing the required quantity of In2O3-x(OH)y nanoparticles, leading to an enhanced CO production rate. Simultaneously, the TiO2 nanoparticle layer supplies photogenerated electrons and holes that are transferred to active sites on In2O3-x(OH)y nanoparticles and participate in the reactions occurring at the catalyst surface.