Fabrication of irregular-layer-free and diameter-tunable Ni–Ti–O nanopores by anodization of NiTi alloy |
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| Institution: | 1. Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2. Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China;1. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, Hunan, China;2. College of Chemistry and Materials Science, Ludong University, Yantai 264025, Shandong, China;3. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong, China |
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| Abstract: | Ni–Ti–O nanopores (NPs) free of irregular surface layers and with tunable diameters are prepared by anodizing NiTi alloy in glycerol containing H2O and NaCl. In an electrolyte composed of glycerol, 10 vol% H2O and 0.6 M NaCl, NPs with diameters between 23 and 39 nm can be produced at anodization voltages between 20 and 80 V. In this electrolyte system, the irregular oxide layer on the surface can be completely removed chemically and/or mechanically during anodization. The resulting Ni–Ti–O NPs with tunable diameters should prove useful, for example, in energy, environmental and biomedical applications. |
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