One-step electrodeposition of Ag-decorated ZnO nanowires
| Autor: | Bernabé Marí, Radhouane Chtourou, I. Ben Assaker, B. Slimi, A. Kriaa |
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| Rok vydání: | 2016 |
| Předmět: |
Diffraction
Materials science Photoluminescence Band gap Scanning electron microscope Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Electrochemistry General Materials Science Electrical and Electronic Engineering Surface plasmon resonance Spectroscopy Wurtzite crystal structure Photocurrent 021001 nanoscience & nanotechnology Condensed Matter Physics Ag-decorated ZnO 0104 chemical sciences Photoelectrochemical characterization Chemical engineering FISICA APLICADA Electrodeposition technique ZnO nanowires 0210 nano-technology |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| ISSN: | 1433-0768 1432-8488 |
| Popis: | A new route for synthesizing Ag-decorated ZnO nanowires (NWs) on conductive glass substrates using a one-step electrodeposition technique is described here. The structural, optical, and photoelectrochemical properties of Ag-decorated ZnO nanowires were studied in detail using techniques such X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, UV-visible spectroscopy, photoluminescence, and photoelectrochemical measurements. Both pure and Ag-decorated ZnO nanowires were found to crystallize in the wurtzite structure, irrespective of their Ag contents. Increasing the Ag content from pure ZnO NWs to 3% Ag ZnO NWs decreases the photoluminescence intensity, shifts the optical band gap to the red, and increases the photocurrent up to threefold. This behavior was attributed to the surface plasmon resonance effect induced by the Ag nanoparticles, which inhibits charge recombination and improves charge transport on the ZnO surface. B.S. acknowledges the Nanomaterials and Systems Laboratory for Renewable Energies, Research and Technology Centre of Energy Technoparc Borj Cedria for financial support. This work was supported by the Ministerio de Economia y Competitividad (ENE2013-46624-C4-4-R) and the Generalitat Valenciana (Prometeus 2014/044). |
| Databáze: | OpenAIRE |
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