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, 10vol% H2O and 0.6M NaCl, NPs with diameters between 23 and 39nm can be produced at anodization voltages between 20 and 80V. 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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