Three-dimensional porous Ti supported Ni/Sb Co-doped SnO2 anode for electrocatalytic production of ozone

作者：Mengqing Hu, Di Zhao, Mengyang Dong, Huai Qin Fu, Yu Zou, Yiming Xu, Ming Zhou, Lei Zhang, Liang Wang, Yajie Shu, Kaidi Zhang, Ziyao Chen, Yiwei Sun, Joshua S. Harbort, Jeffrey R. Harmer, Porun Liu, Huajie Yin, Huijun Zhao · 发表于：Journal of environmental chemical engineering · 年份：2024 · DOI：10.1016/j.jece.2024.114915 · 被引用次数：8 · 研究领域：Electrocatalysts for Energy Conversion、Catalytic Processes in Materials Science、Gas Sensing Nanomaterials and Sensors

Electrochemical ozone (O 3 ) production (EOP) offers a promising green alternative for in situ generating high concentration, strongly oxidizing O 3 . However, its progress is hindered by low durability and poor Faradaic efficiency of the anodes. Herein, a nanosheet-structured nickel and antimony co-doped tin dioxide (Ni/Sb-SnO 2 ) is directly grown on three-dimensional porous titanium (3D-PTi), achieving enhanced EOP performance. The 3D architecture and Ni/Sb co-doping synergistically improve both activity and stability, making it a highly efficient and durable EOP anode. The Ni/Sb-SnO 2 @3D-PTi anode achieved a Faradaic efficiency above 28 % with an energy consumption of 25.44 Wh g⁻ 1 at 20 mA cm −2 in 0.5 M H 2 SO 4 , surpassing other SnO 2 -based comparative anodes. It maintains excellent stability for over 25 h at 100 mA cm −2 . Furthermore, the high-flow O 3 generated in situ effectively removes 97 % of tetracycline within 2 h, with a Total Organic Carbon (TOC) reduction of 66.1 %. This work demonstrates the strong potential of EOP-derived advanced oxidation processes for environmental remediation. • Ni/Sb co-doped SnO 2 has been grown on 3D-porous Ti support. • Ni and Sb dopants augment the electron mobility, conductivity, and oxygen vacancies. • The 3D anode displays outstanding activity, selectivity and durability for ozone production. • The real-time on-site produced ozone is used to efficiently degrade tetracycline.