生物炭
过氧二硫酸盐
降级(电信)
兴奋剂
电极
化学
氮气
粒子(生态学)
无机化学
环境化学
材料科学
化学工程
热解
催化作用
光电子学
电信
生物化学
海洋学
有机化学
物理化学
计算机科学
工程类
地质学
作者
Dongcai He,P. Chen,Peng Zheng,Mengying Yang,Lang Liü,Shaochun Yuan
出处
期刊:AIP Advances
[American Institute of Physics]
日期:2024-03-01
卷期号:14 (3)
摘要
In this work, a three-dimensional electrode material (FeN@BC) was prepared by doping iron-nitrogen sites into biochar for activating peroxydisulfate (E-FeN@BC-PS). The scanning electron microscope, x-ray diffractometer, Fourier transform infrared spectroscopy, and x-ray photoelectron spectroscopy results of FeN@BC proved that Fe–N sites were successful doped into BC. Electrochemical analysis indicated that FeN@BC could enhance the electron transfer in the electrochemical process. A significant synergistic effect (SI = 12.46) was observed in the E-FeN@BC-PS system. Tetracycline (TC) was almost removed completely within 30 min in optimal operating parameters. Radical scavenging experiments showed that ·OH, SO4●−, O2●−, and 1O2 all contributed to TC degradation. The cyclic experiment and characterizations before and after the recycle showed that the FeN@BC in the three-dimensional electrode system exhibited excellent stability and reusability, and electricity had an obvious protective effect on the FeN@BC materials. This study revealed the synergistic catalytic mechanism of metal and heteroatomic hybrid materials as three-dimensional electrodes in persulfate activation, promising the development of sustainable and efficient water treatment technology.
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