Volume 46, Issue 4 pp. 4506-4515
RESEARCH ARTICLE

Polydopamine and Nafion bi-layer passivation modified CdS photoanode for photoelectrochemical hydrogen evolution

Shuya Zheng

Shuya Zheng

School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China

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Lu Han

Corresponding Author

Lu Han

School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China

Correspondence

Lu Han, School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, China.

Email: [email protected]

Zhibin Zhang, Defense Innovation Institute, Academy of Military Science, Beijing, 100071, China.

Email: [email protected]

Xibao Li, School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, 330063, China.

Email: [email protected]

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Xudong Luo

Xudong Luo

School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China

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Lilai Sun

Lilai Sun

School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China

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Na Li

Na Li

School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China

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Zhibin Zhang

Corresponding Author

Zhibin Zhang

Defense Innovation Institute, Academy of Military Science, Beijing, China

Correspondence

Lu Han, School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, China.

Email: [email protected]

Zhibin Zhang, Defense Innovation Institute, Academy of Military Science, Beijing, 100071, China.

Email: [email protected]

Xibao Li, School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, 330063, China.

Email: [email protected]

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Xibao Li

Corresponding Author

Xibao Li

School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, China

Correspondence

Lu Han, School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, China.

Email: [email protected]

Zhibin Zhang, Defense Innovation Institute, Academy of Military Science, Beijing, 100071, China.

Email: [email protected]

Xibao Li, School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, 330063, China.

Email: [email protected]

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First published: 06 November 2021
Citations: 13

Funding information: Natural Science Foundation of Jiangxi Province, Grant/Award Numbers: 20171ACB21033, 20192ACBL21047; National Natural Science Foundation of China, Grant/Award Numbers: 51772139, 51962023; 2019 Project of Liaoning Education Department, Grant/Award Number: 2019LNJC20

Summary

Photoelectrochemical (PEC) hydrogen production, using sunlight, is a clean, renewable, and eco-friendly strategy for solar fuel production. To reduce the rate of photogenerated carriers' recombination and chemically corrosion of CdS photoanode, a composite component surface state passivation layer was introduced. The polydopamine (PDA) and Nafion co-modified CdS nanorods were successfully prepared by simple electropolymerization and dipping methods. The inherent adhesion of PDA can make it adhere well to CdS nanorods to improve the surface defects of CdS, and it can also promote the assembly of Nafion coating. The mechanism of PDA/Nafion bi-layer passivation on CdS was analyzed by steady-state/time-resolved photoluminescence spectra and electron paramagnetic resonance. The optimized CdS/PDA/Nafion photoanode exhibits highly improved PEC water splitting activity and stability under visible light. It is highly anticipated that this multifunctional polymer passivation layer will provide new routes to practically engineer photoanodes in PEC hydrogen production devices.

CONFLICT OF INTEREST

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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