Characterization of ordered Cu2O nanowire arrays prepared by heat treated Cu/PAM composite |
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| Authors: | Yu-Min Shen Yueh-Ting Shih Sheng-Chang Wang Pramoda K Nayak Jow-Lay Huang |
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| Affiliation: | 1. Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan;2. Department of Materials Engineering, Kun Shan University, Tainan 710, Taiwan;3. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China;4. Interdisciplinary School of Green Energy and Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 689-798, Republic of Korea;5. Department of Mechanical Engineering, National Chin-Yi University of Technology, Taiping City, Taichung County 411, Taiwan;6. Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan;7. Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan;8. Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 811, Taiwan;1. College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China;2. Chemistry Department, University of Toronto, Toronto M5S3H4, RP, Canada |
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| Abstract: | Cu nanowire arrays were synthesized via a porous alumina membrane (PAM) template with a high aspect ratio, uniform pore size (120–140 nm), and ordered pore arrangement. The Cu2O nanowire arrays were prepared from the oxidization of Cu metal nanowire arrays. The electrochemical deposition potential of Cu metal nanowires (?180 mV vs. SCE) was determined from X-ray diffraction (XRD) patterns. The microstructure and chemical composition of Cu nanowire arrays were characterized using field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HR-TEM), and X-ray diffraction (XRD). Results indicate that the Cu/Cu2O nanowire arrays assembled into the nanochannel of the porous alumina template with diameters of 120–140 nm. The valence of copper was controlled by the porous alumina template during the annealing process. Copper nanowires transformed to the Cu2O phase with the space limitation of the PAM template. Single-crystal Cu2O nanowire arrays were also obtained under the template embedded. |
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