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Electrodeposition of Al-doped ZnO Nanoflowers with Enhanced Photocatalytic Performance

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In this study, Al-doped ZnO nanoflowers were fabricated on conductive substrates via a simple electrodeposition process. The Al-doped ZnO nanoflowers are three-dimensional micro/nano hierarchical structures composed of numerous nanosheets. The chemical composition and crystal structure of the as-synthesized nanoflowers were characterized by EDS, XPS, XRD and HRTEM. It was found that the Al doping led to the decrease of the band gap of ZnO from 3.21 eV to 3.07 eV. Considering the large surface areas, the Al-doped ZnO nanoflowers were used as the photocatalyst for degradation of methyl orange, and exhibited a significantly enhanced performance comparing with the undoped ZnO nanostructures. The good photocatalytic performance should be related to the large surface areas of the nanoflowers and the more free carriers in the Al-doped ZnO, which are introduced by the dopants.
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Document Type: Research Article

Publication date: 01 March 2012

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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