After carbon, hydrogen, and oxygen, nitrogen is the next most abundant element in the human body. Inorganic and organic compounds of nitrogen feature prominently in many biological and environmental, as well as industrial, processes. In nature, the inorganic compounds of nitrogen are controlled by a reaction cycle called the nitrogen cycle (Figure 1).1 The denitrification pathway in this cycle, that is, the conversion of nitrate to dinitrogen, is employed by certain bacteria to produce ATP anaerobically and gain energy for cell growth. All organisms use ammonia as one of the starting building blocks for the synthesis of amino acids, nucleotides, and many other important biological compounds. Nitric oxide is * Corresponding author. E-mail: m.koper@chem.leidenuniv.nl. † Present address: Energy research Centre of The Netherlands (ECN), P.O. Box 1, 1755 ZG Petten, The Netherlands. ‡ Present address: Research, Development & Innovation, AkzoNobel Chemicals bv, Velperweg 76, P.O. Box 9300, 6800 SB Arnhem, The Netherlands. Chem. Rev. 2009, 109, 2209–2244 2209

Nitrogen cycle electrocatalysis.

Physical properties and mechanisms of formation of nitrous oxide

Electroreduction of nitrate and nitrite anions on platinum metals: A model process for elucidating the nature of the passivation by hydrogen adsorption

Mechanisms of electrochemical reduction and oxidation of nitric oxide

https://pure.tue.nl/ws/files/1591905/617875.pdf

The electrocatalytic reduction of NO3− on Pt, Pd and Pt + Pd electrodes activated with Ge

The electrochemical reactivity of different nitrogen oxides or their absorption products in sulfuric acid was investigated by potential scan measurements. Experiments were carried out at 23°C with platinum electrodes. Among the substances studied only and exhibited well‐defined oxidation and reduction currents. The electrochemical reactions of in were studied in detail by using a rotating disk electrode. Mass transport limited currents were observed for both oxidation and reduction. From the variation of the limiting current with rotation rate the diffusion coefficient of was determined to be .

https://iopscience.iop.org/article/10.1149/1.2403987/pdf

Dilip Dutta

Papers

Electrochemical Behavior of Nitric Oxide in 4 M H 2 SO 4 on Platinum