Selective electrosynthesis of hydroxylamine from aqueous nitrate/nitrite by suppressing further reduction.

ABSTRACT: The electrocatalytic reduction of nitrogenous waste offers a sustainable approach to producing nitrogen-containing chemicals. The selective synthesis of high-value hydroxylamine (NH₂OH) is challenging due to the instability of NH₂OH as an intermediate. Here, we present a rational electrocatalyst design strategy for promoting NH₂OH electrosynthesis by suppressing the competing pathways of further reduction. We screen zinc phthalocyanines (ZnPc) with a high energy barrier for NH₂OH reduction by regulating their intrinsic activity. Additionally, we discover that carbon nanotube substrates exhibit significant NH₃-producing activity, which can be effectively inhibited by the high coverage of ZnPc molecules. In-situ characterizations reveal

SUBMITTER: Tang Y 

PROVIDER: S-EPMC11557954 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature