Facet-Selective Growth of Dots-on-Plate II-VI Heterostructures for Efficient Photocatalytic Hydrogen Evolution

Xuefei Li (Co-first Author), Feiyue Ge (Co-first Author), Chi Zhang, Jiaxin Wei, Ying Wang, Ya-Min Li, Xinrui Zhu, Wei Zhang, Xue-Jun Wu*, Li Zhai*, Bin Zhai*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

High-level control over the surface and interface of II-VI heterostructures is crucial for enhancing charge separation and optimizing active sites, thus improving photocatalytic performance. However, due to variations in surface energy and atomic arrangement among different crystal facets, achieving selective growth of specific facets remains a significant challenge. Herein, we have achieved the selective growth of CdSe or ZnSe dots on the lateral facets or basal facets of two-dimensional CdS or ZnS nanoplates by carefully selecting Se source precursors with different reaction activities. The lateral-ZnSe/CdS exhibit enhanced activity for photocatalytic hydrogen evolution compared to that of basal-ZnSe/CdS, attributed to the high exposure ratio of the basal facets and the effective modulation of photoinduced electron-hole pairs at the lateral-ZnSe/CdS interfaces. This work expands the structural diversity of II-VI heterostructures and also provides a viable strategy to enhance their photocatalytic performance by tailoring the surface and interface structures. © 2025 American Chemical Society.
Original languageEnglish
Pages (from-to)4560-4567
JournalNano Letters
Volume25
Issue number11
Online published10 Mar 2025
DOIs
Publication statusPublished - 19 Mar 2025

Research Keywords

  • facet-selective growth
  • II−VI heterostructures
  • photocatalysis
  • ultrafast spectrum

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