Deciphering co-catalytic mechanisms of potassium doped g-C3N4 in Fenton process
文献类型：期刊论文
| 作者 | Yan, Wei; Zhang, Ru; Ji, Feng; Jing, Chuanyong |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2020-06-15 |
| 卷号 | 392页码:1-12 |
| 关键词 | g-C3N4 Potassium doping Co-catalytic process Fenton reaction Degradation |
| ISSN号 | 0304-3894 |
| 英文摘要 | Conventional Fenton reaction for the pollutant removal is restricted by incomplete H2O2 decomposition due to the low efficient Fe(III)/Fe(II) cycle. In this study, the co-catalytic Fenton processes with g-C3N4 and the roles of potassium doping in the diverse mechanisms were comprehensively investigated. The degradation rate of enrofloxacin (ENR) in g-CN-3.9 %K/Fe(III)/H2O2 was 204 times higher than that in conventional Fenton reaction. This significant enhancement was ascribed to the readily formed complex between Fe(III) and K doped g-C3N4 The K doping facilitated the transfer of photoexcited e(-) from g-CN-3.9 %K surface to Fe(III), leading to an accelerated Fe(III) reduction to Fe(II). In addition, this complex was coordinated and oxidized by H2O2, resulting in the formation of Fe(V) which quickly degraded ENR. Without K doping, on the other hand, only O-center dot(2) dominated the degradation of ENR in g-CN/Fe(III)/H2O2 due to the lack of Fe(III) complexation. This study provides a new perspective for regulating the transfer directions of the photoexcited e(-) with K doping in g-C3N4/Fenton coupled catalytic system for water purification. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44651]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yan, Wei,Zhang, Ru,Ji, Feng,et al. Deciphering co-catalytic mechanisms of potassium doped g-C3N4 in Fenton process[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,392:1-12. |
| APA | Yan, Wei,Zhang, Ru,Ji, Feng,&Jing, Chuanyong.(2020).Deciphering co-catalytic mechanisms of potassium doped g-C3N4 in Fenton process.JOURNAL OF HAZARDOUS MATERIALS,392,1-12. |
| MLA | Yan, Wei,et al."Deciphering co-catalytic mechanisms of potassium doped g-C3N4 in Fenton process".JOURNAL OF HAZARDOUS MATERIALS 392(2020):1-12. |
入库方式： OAI收割
来源：生态环境研究中心
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