Porous Mn2O3 nanorods synthesized from thermal decomposition of coordination polymer and used in hydrazine electrochemical sensing

•Thermal decomposition of coordination polymer (CP) without morphology destroying.•Preparation of porous Mn2O3 nanorods via decomposition of CP.•Mn2O3-Au nanocomposite.•Good performance in hydrazine electrochemical sensing.

Porous Mn2O3 nanorods were prepared via the decomposition of a coordination polymer precursor, as evidenced by XRD and TEM results. Electrochemistry results showed obvious electrocatalytic activity of Mn2O3 nanorods toward the oxidation of hydrazine. When Au nanoparticles were loaded onto Mn2O3 nanorods, the performance in hydrazine determination was improved obviously. The sensitivity of 500 mA mol-1 L cm−2 was obtained in linear range of 2×10−6−1.3×10−3 mol L−1, and the detection limit was 1.1×10−6 mol L−1.