外延
光催化
材料科学
异质结
分解水
光电子学
化学工程
纳米技术
化学
催化作用
有机化学
工程类
图层(电子)
作者
Haifeng Lin,Mengdan Kong,Zhitao Zou,Xue Li,Hui Wang,Jixiang Xu,V. Z. Turkevich,Yanyan Li,Xun Wang,Lei Wang
出处
期刊:Small
[Wiley]
日期:2025-01-13
标识
DOI:10.1002/smll.202410751
摘要
Crafting anisotropically epitaxial p-n heterostructures with Z-scheme charge transmission is a promising avenue toward excellent photocatalytic efficiency, yet the large lattice mismatch and diverse crystal growth habits between components have often arisen as a big challenge to this goal. Here, anisotropically epitaxial p-n heterostructures with 19.8% lattice mismatch are obtained via a dynamics-mediated seeded growth tactic under reaction temperature as low as 60 °C. Structural analyses reveal the epitaxy of hexagonal CuS nanoplates onto CdS nanowires through forming misfit dislocations at {101̄0} interface and stacking faults inside CuS nanoplates. Experimental and density functional theory calculation results verify the Z-scheme photo-carriers transfer in epitaxial CdS-CuS heterostructures, which exhibit a much enhanced visible-light-driven H2 generation capability than non-epitaxial CdS/CuS counterpart, and the site-specified NiOOH photo-deposition over CdS-CuS heterostructures leads to a distinguished H2-evolving activity ≈65 and 36 times promotion compared to those of pristine CdS and Pt-loaded (3 wt.%) CdS, respectively. The study can enlighten new thinking to the steerable synthesis of epitaxial nanostructures with large lattice mismatch for various promising applications.
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