摘要
The management of nitrogenous waste emissions presents significant environmental and health challenges.Efficient and sustainable upcycling strategies are needed to convert waste nitrogen compounds into valuable resources.Electrocatalysis has emerged as a promising solution for waste management,but several challenges remain,including the identification of suitable electrocatalysts and understanding the complex reaction mechanisms.In this review,we focus on the progress in electrocatalytic oxidized nitrogen waste upgrading and utilization,highlighting the application of advanced in situ/operando characterization techniques,including X-ray spectroscopy,scanning electrochemical microscopy and others.These techniques provide valuable insights into the structural and chemical properties of electrocatalysts as well as intermediates during electrochemical reactions,enabling a better understanding of reaction mechanisms and optimization of reaction conditions.The review explores the mechanisms of electrocatalytic upcycling of nitrogenous waste,including nitrate/nitrite reduction,nitric oxide reduction,and carbon dioxide and nitrate co-reduction reactions.Additionally,future research directions and development trends are discussed,offering a relevant guide for the development of sustainable electrocatalytic technologies for waste management and resource recovery.
基金
supported by the National Key Research and Development Project(No.2022YFA1505300)
National Nature Science Foundation of China(Nos.52202372 and 22304021)
Sichuan Science and Technology Program(Nos.2023NSFSC0089 and 2023NSFSC0436).
