Cu-based metal-organic framework as a novel sensing platform for the enhanced electro-oxidation of nitrite

- A stable Cu-based metal-organic framework (MOF) was synthesized by a simple method.
- The as-prepared Cu-MOF decreased the oxidation potential of nitrite.
- The Cu-MOF also exhibited strong absorption ability toward HAuCl4.
- The Au/Cu-MOF/CPE showed good analytical performances for the detection of nitrite.