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Electrocatalytic dechlorination of halogenated antibiotics via synergistic effect of chlorine-cobalt bond and atomic H-star
Liu, Tian; Luo, Jinming; Meng, Xiaoyang; Yang, Liming; Liang, Bin; Liu, Meijun; Liu, Chengbin; Wang, Aijie; Liu, Xia; Pei, Yong; Yuan, Jili; Crittenden, John
2018-09-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume358Pages:294-301
AbstractAlthough noble metal electrocatalysts are highly efficient in the dehalogenation of halogenated antibiotics, the prohibitive cost hinders their practical applications. In this study, a cobalt-phosphorous/oxide (Co-P/O) composite prepared via a one-step electrodeposition was for the first time applied in electroreductive de chlorination of halogenated antibiotics (HA), including chloramphenicol (CAP), fiorfenicol (FLO) and thiamphenicol (TAP). Co-P/O had a higher FLO dechlorination efficiency (91%) than Pd/C (69.3%) (t = 60 min, C-0 = 20 mg L-1, applied voltage of-1.2 V vs. saturated calomel electrode (SCE)). Furthermore, the de chlorination efficiencies of Co-P/O for CAP and TAP reached to 98.7 and 74.2%, respectively. The electron spin resonance and in situ Raman characterizations confirmed that atomic H-star was produced via the Co-P and the formation of Co-Cl bonds occurred on the Co-O in Co-P/O. The Co-Cl bond formation could trap HA molecules onto Co-P/O and weaken the C-Cl bond strength. The synergistic effect of H-star attack and Co-Cl bond was responsible for the high dechlorination efficiency. This study offers new insights into the interface mechanism of electroreductive dehalogenation process, and shows a great potential for the remediation of halogenated antibiotics contaminated wastewater.
Department中国科学院环境生物技术重点实验室
KeywordHalogenated antibiotics Electroreductive dechlorination Synergistic effect Atomic H-star Co-Cl bond
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/41250
Collection中国科学院环境生物技术重点实验室
Recommended Citation
GB/T 7714
Liu, Tian,Luo, Jinming,Meng, Xiaoyang,et al. Electrocatalytic dechlorination of halogenated antibiotics via synergistic effect of chlorine-cobalt bond and atomic H-star[J]. JOURNAL OF HAZARDOUS MATERIALS,2018,358:294-301.
APA Liu, Tian.,Luo, Jinming.,Meng, Xiaoyang.,Yang, Liming.,Liang, Bin.,...&Crittenden, John.(2018).Electrocatalytic dechlorination of halogenated antibiotics via synergistic effect of chlorine-cobalt bond and atomic H-star.JOURNAL OF HAZARDOUS MATERIALS,358,294-301.
MLA Liu, Tian,et al."Electrocatalytic dechlorination of halogenated antibiotics via synergistic effect of chlorine-cobalt bond and atomic H-star".JOURNAL OF HAZARDOUS MATERIALS 358(2018):294-301.
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