Balancing the Charge Separation and Surface Reaction Dynamics in Twin‐Interface Photocatalysts for Solar‐to‐Hydrogen Production
(2025) In Advanced Materials 37(5).- Abstract
- Solar-driven photocatalytic green hydrogen (H2) evolution reaction presents a promising route toward solar-to-chemical fuel conversion. However, its efficiency has been hindered by the desynchronization of fast photogenerated charge carriers and slow surface reaction kinetics. This work introduces a paradigm shift in photocatalyst design by focusing on the synchronization of charge transport and surface reactions through the use of twin structures as a unique platform. With CdS twin structure (CdS-T) as a model, the role of twin boundaries in modulating surface reactions and facilitating charge migration is systematically investigated. Utilizing transient absorption (TA) and time-resolved infrared (TRIR) spectroscopies, it is revealed that... (More)
- Solar-driven photocatalytic green hydrogen (H2) evolution reaction presents a promising route toward solar-to-chemical fuel conversion. However, its efficiency has been hindered by the desynchronization of fast photogenerated charge carriers and slow surface reaction kinetics. This work introduces a paradigm shift in photocatalyst design by focusing on the synchronization of charge transport and surface reactions through the use of twin structures as a unique platform. With CdS twin structure (CdS-T) as a model, the role of twin boundaries in modulating surface reactions and facilitating charge migration is systematically investigated. Utilizing transient absorption (TA) and time-resolved infrared (TRIR) spectroscopies, it is revealed that CdS-T achieves charge separation on a picosecond timescale and, importantly, the surface reaction at the twin boundary with the involvement of holes also occurs within 100 ps to 3 ns. This synchronization of charge donation and surface regeneration significantly enhances the hydrogen evolution process. Accordingly, CdS-T exhibits superior activity for visible light photocatalytic H2 production, withthe H2 production rate of 55.61 mmol h−1 g−1 and remarkable stability (>30 h), outperforming pristine CdS significantly. This study underscores the transformative potential of twin structures in photocatalysis, offering a new avenue to synchronize charge transport and surface reactions. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/d70df0eb-c0ed-447f-a7c3-54846fa1eb35
- author
- Dan, Meng LU ; Yu, Shan ; Lin, Weihua LU ; Abdellah, Mohamed LU ; Guo, Zhen ; Liu, Zhao‐Qing ; Pullerits, Tõnu LU ; Zheng, Kaibo LU and Zhou, Ying
- organization
- publishing date
- 2025
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Advanced Materials
- volume
- 37
- issue
- 5
- article number
- 2415138
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- pmid:39558773
- scopus:85209799557
- ISSN
- 1521-4095
- DOI
- 10.1002/adma.202415138
- language
- English
- LU publication?
- yes
- id
- d70df0eb-c0ed-447f-a7c3-54846fa1eb35
- date added to LUP
- 2024-12-03 14:57:21
- date last changed
- 2025-04-04 14:19:42
@article{d70df0eb-c0ed-447f-a7c3-54846fa1eb35,
abstract = {{Solar-driven photocatalytic green hydrogen (H2) evolution reaction presents a promising route toward solar-to-chemical fuel conversion. However, its efficiency has been hindered by the desynchronization of fast photogenerated charge carriers and slow surface reaction kinetics. This work introduces a paradigm shift in photocatalyst design by focusing on the synchronization of charge transport and surface reactions through the use of twin structures as a unique platform. With CdS twin structure (CdS-T) as a model, the role of twin boundaries in modulating surface reactions and facilitating charge migration is systematically investigated. Utilizing transient absorption (TA) and time-resolved infrared (TRIR) spectroscopies, it is revealed that CdS-T achieves charge separation on a picosecond timescale and, importantly, the surface reaction at the twin boundary with the involvement of holes also occurs within 100 ps to 3 ns. This synchronization of charge donation and surface regeneration significantly enhances the hydrogen evolution process. Accordingly, CdS-T exhibits superior activity for visible light photocatalytic H2 production, withthe H2 production rate of 55.61 mmol h−1 g−1 and remarkable stability (>30 h), outperforming pristine CdS significantly. This study underscores the transformative potential of twin structures in photocatalysis, offering a new avenue to synchronize charge transport and surface reactions.}},
author = {{Dan, Meng and Yu, Shan and Lin, Weihua and Abdellah, Mohamed and Guo, Zhen and Liu, Zhao‐Qing and Pullerits, Tõnu and Zheng, Kaibo and Zhou, Ying}},
issn = {{1521-4095}},
language = {{eng}},
number = {{5}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Advanced Materials}},
title = {{Balancing the Charge Separation and Surface Reaction Dynamics in Twin‐Interface Photocatalysts for Solar‐to‐Hydrogen Production}},
url = {{http://dx.doi.org/10.1002/adma.202415138}},
doi = {{10.1002/adma.202415138}},
volume = {{37}},
year = {{2025}},
}