Volume 57, Issue 51 pp. 16781-16784
Communication

A Promising Application of Optical Hexagonal TaN in Photocatalytic Reactions

Dr. Huimin Liu

Corresponding Author

Dr. Huimin Liu

International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 Japan

The University of Sydney, School of Chemical and Biomolecular Engineering, Chemical Engineering Building J01, Sydney, New South Wales, 2006 Australia

These authors contributed equally to this work.

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Hui Song

Hui Song

International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 Japan

Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 060-0814 Japan

These authors contributed equally to this work.

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Dr. Wei Zhou

Dr. Wei Zhou

TJU-NIMS International Collaboration Laboratory, School of Materials Science and Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, 300072 China

Department of Applied Physics, Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University, Tianjin, 300072 China

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Dr. Xianguang Meng

Dr. Xianguang Meng

International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 Japan

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Prof. Jinhua Ye

Corresponding Author

Prof. Jinhua Ye

International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 Japan

Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 060-0814 Japan

TJU-NIMS International Collaboration Laboratory, School of Materials Science and Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, 300072 China

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First published: 17 October 2018
Citations: 61

Graphical Abstract

TaN was used in a photocatalytic reaction because of its own optical properties. It is shown that the improved electron-hole separation and transfer over asymmetrical TaN can account for its activity enhancement with visible-light irradiation.

Abstract

Searching for highly active and efficient photocatalysts for photo-induced/photo-assisted reactions remains the most challenging task for solar energy utilization. In previous studies, the search for such materials has mainly focused on precious plasmonic metals (for example, Au, Ag, and Cu) and semiconductor oxides (for example, TiO2, ZnO, and WO3). Herein, we report the application of hexagonal tantalum mononitride (TaN) as an optical support in photocatalytic reactions, which could harness visible light to assist CO2 conversion and decompose organic pollutants. Theoretical studies indicated that the improved electron-hole separation in polar TaN under visible-light illumination was critical for its use in photocatalysis. This study could guide the use of TaN in various photocatalytic reactions and wider optical applications.

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