Fast and complete degradation of norfloxacin by using Fe/Fe3C@NG as a bifunctional catalyst for activating peroxymonosulfate
Fast and complete degradation of norfloxacin by using Fe/Fe3C@NG as a bifunctional catalyst for activating peroxymonosulfate
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使用 Fe/Fe3C@NG 作为活化过一硫酸盐的双功能催化剂快速完全降解诺氟沙星
DOI：
10.1016/j.seppur.2018.03.049
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发表时间：
2018-08
影响因子：
8.6
通讯作者：
Heqing Tang
中科院分区：
文献类型：
--
作者：
Qian Peng;Yaobin Ding;Lihua Zhu;Guangli Zhang;Heqing Tang
制备了Fe/Fe 3C和N掺杂石墨碳（Fe/Fe3C@NG）复合催化剂，并将其用于过氧单硫酸盐（PMS）氧化降解诺氟沙星（NOF）的催化活性研究。结果表明，Fe/Fe3C@NG是一种双功能材料，具有良好的吸附性能和催化活性。Fe/Fe3C@NG对NOF的最大吸附容量被评估为0.13 mmol g−1。在给定的条件下（NOF浓度为0.1 mmol L-1，催化剂负载量为0.1 g L-1，PMS添加量为1 mmol L-1），NOF在20 min内几乎完全降解，降解速率常数为0.22 min-1。通过清除实验、EPR和计时电流分析，提出了Fe/Fe3C@NG对PMS的非自由基活化机理。NOF的快速降解是通过快速的电子转换实现的，PMS和NOF分子都吸附在Fe/Fe3C@NG表面，PMS通过从NOF获得电子而被激活，从而氧化NOF。本研究为氧化去除各种环境介质中的有机污染物提供了一种绿色双功能催化剂。
A composite of Fe/Fe3C and N-doped graphitic carbon (Fe/Fe3C@NG) was prepared and used as a catalyst for the activation of peroxymonosulfate (PMS) toward the oxidative degradation of Norfloxacin (NOF). It was observed that Fe/Fe3C@NG behaved as a bifunctional material, showing both good adsorption ability and catalytic activity. The maximum adsorption capacity of Fe/Fe3C@NG for NOF was evaluated as 0.13 mmol g−1. Under given conditions (NOF concentration 0.1 mmol L−1, catalyst load 0.1 g L−1and PMS addition 1 mmol L−1), the degradation of NOF was almost completely achieved in 20 min with a degradation rate constant of 0.22 min−1. A non-radical mechanism was proposed for the activation of PMS by Fe/Fe3C@NG by the scavenging test, EPR and chronoamperometry analysis. The fast and complete degradation of NOF was achieved via a rapid electron transform, in which both PMS and NOF molecular were adsorbed on the surface of Fe/Fe3C@NG and PMS was activated by obtaining electrons from NOF to oxidize NOF. The present study provides a green bifunctional catalyst for the oxidative removal of organic pollutants in various environmental media.
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影响因子：
12.8
作者：
Xianwei Liu;Xue-Fei Sun;Dao-Bo Li;Wen‐Wei Li;Yu-Xi Huang;Guo-ping Sheng;Hanqing Yu
通讯作者：
Xianwei Liu;Xue-Fei Sun;Dao-Bo Li;Wen‐Wei Li;Yu-Xi Huang;Guo-ping Sheng;Hanqing Yu
影响因子：
3.7
作者：
U. Kramm;I. Herrmann-Geppert;P. Bogdanoff;S. Fiechter
通讯作者：
U. Kramm;I. Herrmann-Geppert;P. Bogdanoff;S. Fiechter
影响因子：
6
作者：
Qian Zhou;Yingying Zhang;Nan Wang;Lihua Zhu;Heqing Tang
通讯作者：
Qian Zhou;Yingying Zhang;Nan Wang;Lihua Zhu;Heqing Tang
影响因子：
8.7
作者：
de Souza Santos, Lucilaine Valeria;Meireles, Alexandre Moreira;Lange, Lisete Celina
通讯作者：
Lange, Lisete Celina
影响因子：
3.9
作者：
Bai, Xiaojuan;Wang, Li;Zhu, Yongfa
通讯作者：
Zhu, Yongfa