Cupric oxide nanowires assembled by nanoparticles in situ with enhancing electrocatalytic oxidation of ascorbic acid

- The CuO nanowires assembled by nanoparticles are fabricated via a facile method.
- A new strategy for unordered nanoparticles to ordered nanowires is proposed.
- Zn and Ag in the alloy are considered to lead the formation of CuO.
- The CuO nanowires sensor displayed a high sensitivity and a low detection limit.