Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 48, Pages 26819-26827Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b09027
Keywords
photocatalytic hydrogen production; branched heterostructure; photogenerated carrier transfer; CuO/ZnO@Au; plasmonic photocatalyst
Funding
- National Natural Science Foundation of China [11574263, 11104240]
- Open Research Fund of State Key Laboratory of Bioelectronics of Southeast Univ. [I2015005]
- Youth Cultivation Fund of Yangzhou Univ. [2014CXJ014]
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Multi-component hetero-nanostructures exhibit multifunctional properties or synergistic performance and are thus considered as attractive materials for energy conversion applications. There is a long-standing demand to construct more sophisticated heterostructures for steering charge-carrier flow in semiconductor systems. Herein we fabricate a large-scale quantity of three-dimensional (3D) branched CuxO/ZnO@Au heterostructure consisting of CuO nanowires (NWs) and grafted ZnO nanodisks (NDs) decorated with Au nanoparticles via sequential hierarchical assemblies. This treelike hetero-nanostructure ensures well-steered transfer of photogenerated electrons to the exposed ZnO NDs, while holes to the CuO backbone NWs with concerted efforts from multi-node p-n junctions, polar ZnO facets, and Au plasmon, resulting in the significantly enhanced photocatalytic hydrogen evolution performance.
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