Electrocatalytic Systems for NOx Valorization in Organonitrogen Synthesis
Peisen Liao,
Jiawei Kang,
Runan Xiang
et al.
Abstract:Inorganic nitrogen oxide (NOx) species, such as NO, NO2, NO3−, NO2− generated from the decomposition of organic matters, volcanic eruptions and lightning activated nitrogen, play important roles in the nitrogen cycle system and exploring the origin of life. Meanwhile, excessive emission of NOx gases and residues from industry and transportation causes troubling problems to the environment and human health. How to efficiently handle these wastes is a global problem. In response to the growing demand for sustain… Show more
“…[64] The Li group illustrated the feasibility of obtaining amino acids with an impressive 93 % purity using a straightforward freeze-drying method. [19,22,40,65] Additionally, the isolation of cyclohexanone oxime achieved with a remarkable 95 % yield through simple separation and steam drying. [18] Separation technologies can significantly contribute to the practicality of electrocatalytic reactions involving NO x .…”
“…Diversifying electrochemical routes, exploring coupling reactions, and leveraging multicomponent catalysts holds the potential to achieve selective and efficient NO x reduction. [65,68] The innovations in reaction pathways will enable the synthesis of value-added nitrogenous compounds from NO x , contributing to sustainable chemical synthesis. In addition, the development of ex-cell processes coupled with electrochemical processes can effectively expand the application of NO x electric reduction.…”
Chemical manufacturing utilizing renewable sources and energy emerges as a promising path towards sustainability and carbon neutrality. The electrocatalytic reactions involving nitrogen oxides (NOx) offered a potential strategy for synthesizing various nitrogenous chemicals. However, it is currently hindered by low selectivity/efficiency and limited reaction pathways, mainly due to the difficulties in controllable generation and utilization of nitrogenous intermediates. In this minireview, focusing on nitrogenous intermediates in NOx‐involved electrocatalytic reactions, we discuss newly developed methodologies for studying and controlling the generation, conversion, and utilizing of nitrogenous intermediates, which enable recent developments in NOx‐involved electrocatalytic reactions that yield various products, including ammonia (NH3), organonitrogen molecules, and nitrogenous compounds exhibiting unconventional oxidation states. Furthermore, we also make an outlook to highlight future directions in the emerging field of NOx‐involved electrocatalytic reactions.
“…[64] The Li group illustrated the feasibility of obtaining amino acids with an impressive 93 % purity using a straightforward freeze-drying method. [19,22,40,65] Additionally, the isolation of cyclohexanone oxime achieved with a remarkable 95 % yield through simple separation and steam drying. [18] Separation technologies can significantly contribute to the practicality of electrocatalytic reactions involving NO x .…”
“…Diversifying electrochemical routes, exploring coupling reactions, and leveraging multicomponent catalysts holds the potential to achieve selective and efficient NO x reduction. [65,68] The innovations in reaction pathways will enable the synthesis of value-added nitrogenous compounds from NO x , contributing to sustainable chemical synthesis. In addition, the development of ex-cell processes coupled with electrochemical processes can effectively expand the application of NO x electric reduction.…”
Chemical manufacturing utilizing renewable sources and energy emerges as a promising path towards sustainability and carbon neutrality. The electrocatalytic reactions involving nitrogen oxides (NOx) offered a potential strategy for synthesizing various nitrogenous chemicals. However, it is currently hindered by low selectivity/efficiency and limited reaction pathways, mainly due to the difficulties in controllable generation and utilization of nitrogenous intermediates. In this minireview, focusing on nitrogenous intermediates in NOx‐involved electrocatalytic reactions, we discuss newly developed methodologies for studying and controlling the generation, conversion, and utilizing of nitrogenous intermediates, which enable recent developments in NOx‐involved electrocatalytic reactions that yield various products, including ammonia (NH3), organonitrogen molecules, and nitrogenous compounds exhibiting unconventional oxidation states. Furthermore, we also make an outlook to highlight future directions in the emerging field of NOx‐involved electrocatalytic reactions.
“…Hydrogen (H 2 ), as a clean energy carrier with high energy density, has garnered significant attention for producing high-purity hydrogen fuel through electrocatalytic water splitting. − While platinum-based catalysts demonstrate remarkable efficiency in alkaline hydrogen evolution reaction (HER), their widespread implementation is hindered by limited resources and poor activity for water splitting. − …”
A highly
promising electrocatalyst has been designed and prepared
for the hydrogen evolution reaction (HER). This involves incorporating
well-dispersed Ir nanoparticles into a cobalt-based metal–organic
framework known as Co-BPDC [Co(bpdc)(H2O)2,
BPDC: 4,4′-biphenyldicarboxylic acid]. Ir@Co-BPDC demonstrates
exceptional HER activity in alkaline media, surpassing both commercial
Pt/C and recent noble-metal catalysts. Theoretical results indicate
that electron redistribution, induced by interfacial bonds, optimizes
the adsorption energy of water and hydrogen, thereby enhancing our
understanding of the superior properties of Ir@Co-BPDC for HER.
“…As this area is developing quite rapidly, this minireview does not aim to provide a complete compilation of publications (readers may refer to other reviews to get a comprehensive understanding of this area). 37,38 Instead, we will first give a brief summary of building C-N bonds by electrochemical NO x RR, and then mainly focus the most recent reports in this area in the last two years, and summarize the main challenges and emerging opportunities to develop more efficient NO x RR systems to drive electrosynthesis of organonitrogen compounds. The first electrocatalytic C-N coupling process was demonstrated in 2019 by Jiao's group.…”
The release of NOx species (such as nitrate, nitrite and nitric oxide) into water and atmosphere due to human being’s agricultural and industrial activities has caused a series of environmental...
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