Defective nitrogen doped carbon material derived from nano-ZIF-8 for enhanced in-situ H2O2 generation and tetracycline hydrochloride degradation in electro-Fenton system.

Autor: Luo, Xuan1 (AUTHOR), Zhu, Ruiying1 (AUTHOR), Zhao, Li1 (AUTHOR), Gong, Xiaobo1,2,3,4 (AUTHOR) gxb@sicnu.edu.cn, Zhang, Lingrui1 (AUTHOR), Fan, Lu1,2,3 (AUTHOR) fanlu@sicnu.edu.cn, Liu, Yong1,2,3 (AUTHOR)
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Zdroj: Environmental Research. Jun2024:Part 2, Vol. 251, pN.PAG-N.PAG. 1p.
Abstrakt: Tetracycline hydrochloride (TC) accumulates in large quantities in the water environment, causing a serious threat to human health and ecological environment safety. This research focused on developing cost-effective catalysts with high 2e- selectivity for electro-Fenton (EF) technology, a green pollution treatment method. Defective nitrogen-doped porous carbon (d-NPC) was prepared using the metal-organic framework as the precursor to achieve in-situ H 2 O 2 production and self-decomposition into high activity ·OH for degradation of TC combined with Co2+/Co3+. The d-NPC produced 172.1 mg L−1 H 2 O 2 within 120 min, and could degrade 96.4% of TC in EF system. The self-doped defects and graphite-nitrogen in d-NPC improved the oxygen reduction performance and increased the H 2 O 2 yield, while pyridine nitrogen could catalyze H 2 O 2 to generate ·OH. The possible pathway of TC degradation was also proposed. In this study, defective carbon materials were prepared by ball milling, which provided a new strategy for efficient in-situ H 2 O 2 production and the degradation of pollutants. [Display omitted] • Defective N-doped porous carbon was prepared by ball milling of ZIF-8 derived materials. • Intrinsic defects and nitrogen doping enhanced the oxygen reduction reaction activity. • The d-NPC has high 2e-selectivity and produced 172.1 mg L−1 H 2 O 2 within 120 min. • d-NPC exhibited excellent stability for tetracycline hydrochloride removal in electro-Fenton system. [ABSTRACT FROM AUTHOR]
Databáze: GreenFILE
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