Nguyen Nhat Truong, Xia Meikun, Duchesne Paul N, Wang Lu, Mao Chengliang, Jelle Abdinoor A, Yan Tingjiang, Li Peicheng, Lu Zheng-Hong, Ozin Geoffrey A
Solar Fuels Group, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada.
School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P.R. China.
Nano Lett. 2021 Feb 10;21(3):1311-1319. doi: 10.1021/acs.nanolett.0c04008. Epub 2021 Jan 25.
Herein is developed a ternary heterostructured catalyst, based on a periodic array of 1D TiN nanotubes, with a TiO nanoparticulate intermediate layer and a InO(OH) 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 CO 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 InO(OH) nanoparticles, leading to an enhanced CO production rate. Simultaneously, the TiO nanoparticle layer supplies photogenerated electrons and holes that are transferred to active sites on InO(OH) nanoparticles and participate in the reactions occurring at the catalyst surface.
本文开发了一种基于一维TiN纳米管周期性阵列的三元异质结构催化剂，其具有TiO纳米颗粒中间层和InO(OH)纳米颗粒壳层，以提高光催化逆水煤气变换反应的性能。结果表明，异质结构中三种组分的排列顺序敏感地决定了其在CO光催化中的活性。具体而言，TiN纳米管不仅由于其强光学吸收特性为光催化反应提供光热驱动力，而且它们还作为关键支架，用于减少所需的InO(OH)纳米颗粒数量，从而提高CO生成速率。同时，TiO纳米颗粒层提供光生电子和空穴，这些电子和空穴转移到InO(OH)纳米颗粒上的活性位点，并参与在催化剂表面发生的反应。
