Metal-organic framework-derived manganese ferrite nanocubes for efficient hydrogen peroxide sensing

In this work, manganese ferrite nanocubes were synthesized by thermal calcination of Prussian blue analogues. The obtained products inherited the high porous structure of the metal-organic frameworks and were employed to construct an efficient non-enzymatic hydrogen peroxide sensor. The electrochemical sensor showed fast and reliable response towards the hydrogen peroxide with the sensitivity of 53.7 mu A/mM cm(2). The linear range was from 1 mu M to 24 mM and the detection limit was 0.3 mu M. The results revealed the high electrocatalytic activity of the manganese ferrite nanocubes owing to the metal-organic framework structure. (C) 2020 Elsevier B.V. All rights reserved.