Abstract
The utilization of electrochemical methods for synthesizing ozone (O3) and sodium hypochlorite (NaClO) holds great promise for decomposing organic contaminants. While the Ni-Sb-SnO2 electrode demonstrates several favorable attributes, ensuring its activity and stability in practical applications remains a significant hurdle. In this study, lanthanide-doped Ni-Sb-SnO2 electrodes were prepared to explore the effects of various lanthanides on the electrochemical performance of O3 and NaClO generation. The results revealed that Nd-Ni-Sb-SnO2 exhibited exceptional ozone generation capability, achieving a Faraday efficiency of 33.6%. Additionally, Ru-Ce-Ni-Sb-SnO2 electrocatalysts for the chlorine evolution reaction (CER) yielded a remarkable Faraday efficiency of 94.3%. Theoretical calculations revealed that the incorporation of Sb and Ni as dopants played a crucial role in stabilizing reaction intermediates. Furthermore, the addition of the lanthanide element Nd enhanced the hybridization between Sn and O, leading to improved performance in the electrochemical ozone production (EOP). Additionally, doping the Ni-Sb-SnO2 electrocatalyst with Ru and Ce promoted d-f hybridization, thereby significantly increasing the Cl- adsorption capacity in the CER. Additionally, integrating a self-made continuous flow electrolyzer with the electrocatalysts facilitated efficient mass transfer, enabling the effective degradation of dyes and pesticides.
Published Version
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