Defective S/N co-doped carbon cloth via a one-step process for effective electroreduction of nitrogen to ammonia

Abstract

The electroreduction of nitrogen (N2) has gained increasing attention as a promising route to achieve green and sustainable ammonia (NH3) production.

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO2 Electroreduction

“…The peaks at 1350 cm À 1 and 1580 cm À 1 are related to the disordered carbon (D-band) and graphitic carbon (G-band), respectively. [37] The ratio of I D to I G is usually used to indicate the degree of graphitization of a carbon material. From the Figure 3, we can conclude that as the temperature increases, the I D /I G value of the catalyst increases, indicating an increase in defect sites of the material.…”

“…Raman spectroscopy was used to demonstrate the degree of graphitization and defect level of SA‐Fe/NG‐600. The peaks at 1350 cm −1 and 1580 cm −1 are related to the disordered carbon (D‐band) and graphitic carbon (G‐band), respectively [37] . The ratio of I D to I G is usually used to indicate the degree of graphitization of a carbon material.…”

Cerium Zirconium Solid Solution with High Faradaic Efficiency for Electrochemical Nitrogen Reduction Reaction under Ambient Condition

“…[60] In addition, the peaks at 1270 cm À 1 are related to -NH 2 swing. [61] Based on these results, the formation of N 2 H x (1 � x � 4) species on the Zr 0.9 Ce 0.1 O 2 catalyst was confirmed, and the NRR followed an associative pathway (Figure 7b). [62] In the associative mechanism, nitrogen molecules are adsorbed on the surface of Zr 0.9 Ce 0.1 O 2 , and attached by a proton to moderate N�N to form À N=NÀ H. Then, as the hydrogenation progresses, another proton was attached and the À HÀ N=NÀ H bond is formed.…”

Strategies in cell design and operation for the electrosynthesis of ammonia: status and prospects

“…Additionally, using operando techniques to validate the ENRR performance and characterize the stability of cell components should be encouraged, preferably by employing multiple in situ characterization tools. In situ Fourier-transform infrared spectroscopy (FTIR), 116,129,146,162,163 in situ X-ray absorption spectroscopy (XAS), 48 in situ XRD, 107 and differential electrochemical mass spectrometry (DEMS) 164,165 are examples that have been applied to elucidate reaction mechanisms in the ENRR and to probe performance losses during operation.…”

“…9A and B). Cheng et al 146 heated a piece of CC to 800 °C with ammonium persulfate as the source of S and N dopants to create a structurally disordered carbon network with electron-rich doped sites, which improves N 2 chemisorption and activation for a good r NH 3 ,geo of 9.9 × 10 −10 mol s −1 cm geo −2 (Fig. 9C).…”