1. ZnO@Au@Cu2O nanotube arrays as efficient visible-light-driven photoelectrod
- Author
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Hongsong Han, Ying Jia, Honglong Shi, Wenzhong Wang, Shuyi Fu, Jirong Chen, and Junli Fu
- Subjects
Nanotube ,Materials science ,Scanning electron microscope ,Physics::Optics ,Nanoparticle ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Condensed Matter::Materials Science ,X-ray photoelectron spectroscopy ,Physics::Atomic and Molecular Clusters ,Materials Chemistry ,Surface plasmon resonance ,Photocurrent ,Condensed Matter::Other ,business.industry ,Mechanical Engineering ,Metals and Alloys ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Mechanics of Materials ,Optoelectronics ,Charge carrier ,0210 nano-technology ,business ,Visible spectrum - Abstract
The ZnO nanotube arrays were obtained by a simple three-step method, and then Au nanoparticles and Cu2O nanocrystals were decorated onto ZnO nanotube arrays successively. The composition, morphology, optical properties and photoelectrochemical performance of the as-prepared ZnO@Au@Cu2O nanotube arrays were characterized by X-ray diffraction, scanning electron microscopy, UV–vis diffuse reflectance spectra, X-ray photoelectron spectroscopy, and photocurrent densities. The results confirmed that ZnO@Au@Cu2O nanotube arrays showed enhanced response to visible light and achieved an excellent photocurrent under visible light due to the localized surface plasmon resonance effect, visible light harvesting of Cu2O nanocrystals, effective transfer and separation of photo-generated charge carriers induced by p-n junction and well band energy match of the ZnO@Au@Cu2O nanotube arrays.
- Published
- 2019
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