Coupling Electrocatalytic Nitric Oxide Oxidation over Carbon Cloth with Hydrogen Evolution Reaction for Nitrate Synthesis. (7th October 2021)

• Record Type: Journal Article
• Authors: Wang, Dongdong; He, Nihan; Xiao, Lei; Dong, Fan; Chen, Wei; Zhou, Yangyang; Chen, Chen; Wang, Shuangyin
• Is Part Of: Angewandte Chemie. Volume 133:Number 46(2021)
• Page Start: 24810
• Page End: 24816
• Publication Date: 2021-10-07
• Subjects: anode substitution reaction -- hydrogen production -- nitrate synthesis -- NO oxidation; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202109905
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: NO is a harmful pollutant to the environment. The traditional removal of NO is hindered by the harsh operating conditions and sacrifice of value‐added chemicals. Efficient electrocatalytic oxidation of NO was achieved over plasma‐treated commercial carbon cloth, serving as a promising anode substitution reaction to couple with the hydrogen evolution reaction without consumption of hydrogen‐containing resources. The introduction of carboxyl groups onto the carbon cloth boosted the electrocatalytic activity via the enhancement of NO chemisorption. Only potentials of 1.39 V and 1.07 V were applied to reach the current density of 10 mA cm −2 in neutral and acidic conditions, respectively, which is superior to the state‐of‐the‐art electrocatalysts for oxygen evolution. Energy and environmental concerns on fossil‐fuel‐derived hydrogen production, ammonia manufacture and nitrate synthesis, are greatly alleviated. This work provides an original strategy to realize the resource utilization of NO, the sustainable nitrate synthesis and hydrogen production in a green and economical way. Abstract : Nitric oxide (NO) removal from exhaust is necessary because it presents an environmental concern. Previously reported techniques for NO removal are non‐economical and do not utilize NO waste. NO electrocatalytic oxidation served as the anode substitution reaction. Over a piece of carbon cloth, NO elimination, sustainable nitrate synthesis, and hydrogen production were achieved electrocatalytically.