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Nano Research 2022, 15(3): 2013-2022 https://doi.org/10.1007/s12274-021-3982-y
Research Article | Issue | Published: 10 December 2021

Photocatalytic hydrogen production from seawater under full solar spectrum without sacrificial reagents using TiO2 nanoparticles

Show Author's Information Jining Zhang1,2,§,  Yifan Lei1,2,§,  Shuang Cao1,§,  Wenping Hu2( ),  Lingyu Piao1,3( ),  Xiaobo Chen4( )
CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, Beijing 100190, China
School of Science, Tianjin University, Tianjin 300072, China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Department of Chemistry, University of Missouri–Kansas City, MO 64110, USA

§Jining Zhang, Yifan Lei, and Shuang Cao contributed equally to this work.

Keywords:
hydrogen production, photocatalytic seawater splitting, titanium dioxide (TiO2) photocatalyst
Topics:
Photocatalysis
Cite this article:
Zhang J, Lei Y, Cao S, et al. Photocatalytic hydrogen production from seawater under full solar spectrum without sacrificial reagents using TiO2 nanoparticles. Nano Research, 2022, 15(3): 2013-2022. https://doi.org/10.1007/s12274-021-3982-y
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Abstract Full text About this article

Photocatalytic water splitting (PWS) has attracted widespread attention as a sustainable method for converting solar to green hydrogen energy. So far PWS research has mainly focused on the development of artificial photocatalytic hydrogen production systems for pure water. It is more practically attractive to create systems for seawater, i.e., to reduce the cost of hydrogen production and make better use of naturally occurring water resources. Herein, brookite, anatase, and rutile TiO2 nanoparticles are investigated as photocatalysts to explore the feasibility of such thought and have shown attractive hydrogen production performance under full solar spectrum without any sacrificial agent. It is worth noting that, brookite TiO2, has more suitable band gap position and excellent photoelectric properties compared with anatase and rutile TiO2, and has higher efficiency and stability in the process of hydrogen production. The photocatalytic hydrogen production rate of brookite TiO2 can reach up to 1,476 μmol/g/h, the highest value reported for TiO2-based systems and most other photocatalysts in seawater splitting under full spectrum. As the Cl− ions in seawater go through a cycle of oxidation and reduction, no Cl2 is detected in the solar hydrogen production from seawater.


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About this article

Photocatalytic hydrogen production from seawater under full solar spectrum without sacrificial reagents using TiO2 nanoparticles

Show Author's information Jining Zhang1,2,§, Yifan Lei1,2,§, Shuang Cao1,§, Wenping Hu2( ), Lingyu Piao1,3( ), Xiaobo Chen4( )
CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, Beijing 100190, China
School of Science, Tianjin University, Tianjin 300072, China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Department of Chemistry, University of Missouri–Kansas City, MO 64110, USA

§Jining Zhang, Yifan Lei, and Shuang Cao contributed equally to this work.

Abstract

Photocatalytic water splitting (PWS) has attracted widespread attention as a sustainable method for converting solar to green hydrogen energy. So far PWS research has mainly focused on the development of artificial photocatalytic hydrogen production systems for pure water. It is more practically attractive to create systems for seawater, i.e., to reduce the cost of hydrogen production and make better use of naturally occurring water resources. Herein, brookite, anatase, and rutile TiO2 nanoparticles are investigated as photocatalysts to explore the feasibility of such thought and have shown attractive hydrogen production performance under full solar spectrum without any sacrificial agent. It is worth noting that, brookite TiO2, has more suitable band gap position and excellent photoelectric properties compared with anatase and rutile TiO2, and has higher efficiency and stability in the process of hydrogen production. The photocatalytic hydrogen production rate of brookite TiO2 can reach up to 1,476 μmol/g/h, the highest value reported for TiO2-based systems and most other photocatalysts in seawater splitting under full spectrum. As the Cl− ions in seawater go through a cycle of oxidation and reduction, no Cl2 is detected in the solar hydrogen production from seawater.

Keywords: hydrogen production, photocatalytic seawater splitting, titanium dioxide (TiO2) photocatalyst

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Acknowledgements

Publication history

Received: 09 September 2021
Revised: 30 October 2021
Accepted: 07 November 2021
Published: 10 December 2021
Issue date: March 2022

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021

Acknowledgements

Acknowledgements

We acknowledge the financial support by the National Natural Science Foundation of China (No. 21972028) and the Strategic Priority Research Program of Chinese Academy of Sciences (No. XDB36000000). We also thank the support from the School of Biological and Chemical Sciences, University of Missouri–Kansas City.

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