Issue 73, 2018

MnO2 nanoarrays: an efficient catalyst electrode for nitrite electroreduction toward sensing and NH3 synthesis applications

Abstract

It is highly attractive to develop efficient electrocatalysts for the sensitive and selective detection of nitrite. In this communication, we report that an MnO2 nanoarray on titanium mesh (MnO2 NA/TM) is an efficient catalyst electrode for the electroreduction of nitrite. Electrochemical measurements demonstrate that the constructed MnO2 NA/TM sensor offers a superior sensing performance, having a short response time of 3 s, a wide detection range of 1.0 μM to 5.0 mM, a low detection limit of 1.5 nM (S/N = 3), and a response sensitivity of 10 301 μA mM−1 cm−2, with satisfactory selectivity, specificity, and reproducibility. This electrochemical system is also capable of catalyzing the electrochemical reduction of nitrite to NH3 with a transformation efficiency of 6%.

Graphical abstract: MnO2 nanoarrays: an efficient catalyst electrode for nitrite electroreduction toward sensing and NH3 synthesis applications

Supplementary files

Article information

Article type
Communication
Submitted
18 Jul 2018
Accepted
17 Aug 2018
First published
17 Aug 2018

Chem. Commun., 2018,54, 10340-10342

MnO2 nanoarrays: an efficient catalyst electrode for nitrite electroreduction toward sensing and NH3 synthesis applications

R. Wang, Z. Wang, X. Xiang, R. Zhang, X. Shi and X. Sun, Chem. Commun., 2018, 54, 10340 DOI: 10.1039/C8CC05837G

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