| Enhanced photocatalytic degradation of ciprofloxacin over Bi2O3/(BiO)(2)CO3 heterojunctions: Efficiency, kinetics, pathways, mechanisms and toxicity evaluation | |
| Chen, Meijuan1,2; Yao, Jie2; Huang, Yu2,3; Gong, Han4; Chu, Wei4 | |
| 2018-02-15 | |
| 发表期刊 | CHEMICAL ENGINEERING JOURNAL
 |
| 卷号 | 334期号:2018页码:453-461 |
| 文章类型 | Article |
| 摘要 | In this study, the degradation of antibiotic ciprofloxacin (CIP) over Bi2O3/(BiO)(2)CO3 heterojunctions under simulated solar light irradiation (SSL-Bi2O3/(BiO)(2)CO3) was examined for the first time. The results showed that the Bi2O3/(BiO)(2)CO3 heterojunctions dramatically improved CIP decay efficiency. The effect of parameters showed that the CIP decay was optimized with the Bi2O3/(BiO)(2)CO3 dosage of 0.5 g/L and a wide pH range of 4.0-8.3, based on which, a kinetic model was derived to predict the remaining CIP concentration. It was found that the presence of anions like SO42-, NO3- and HCO3- decelerated the CIP decay, while the co-existence of Cl- accelerated the CIP decay. Six degradation intermediates were identified by ultra-performance liquid chromatography coupled with mass analyzer (UPLC/MS) and ion chromatographic (IC) analysis, and the decay pathways and degradation mechanism of CIP were proposed by combining the experiment data with theoretical calculation of frontier electron densities. Hydroxyl radical's reaction, photo-hole (h(+)) oxidation and reductive defluorination were found to involve in the CIP decay. The efficient alleviation on total organic carbon (TOC) and toxicity indicated that the complete mineralization and de-toxicity are possible by this system with sufficient reaction time. |
| 关键词 | Bi2o3/(Bio)(2)Co3 Ciprofloxacin Kinetics Model Degradation Mechanism Toxicity |
| WOS标题词 | Science & Technology ; Technology |
| DOI | 10.1016/j.cej.2017.10.064 |
| 关键词[WOS] | ADVANCED OXIDATION PROCESSES ; VISIBLE-LIGHT ; AQUEOUS-SOLUTION ; WASTE-WATER ; TRANSFORMATION PATHWAYS ; ANTIBIOTIC NORFLOXACIN ; ACTIVATED PERSULFATE ; SURFACE WATERS ; BISPHENOL-A ; SULFAMETHOXAZOLE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Engineering |
| WOS类目 | Engineering, Environmental ; Engineering, Chemical |
| WOS记录号 | WOS:000418533400044 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5246 |
| 专题 | 粉尘与环境研究室 |
| 作者单位 | 1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China 4.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon 999077, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Meijuan,Yao, Jie,Huang, Yu,et al. Enhanced photocatalytic degradation of ciprofloxacin over Bi2O3/(BiO)(2)CO3 heterojunctions: Efficiency, kinetics, pathways, mechanisms and toxicity evaluation[J]. CHEMICAL ENGINEERING JOURNAL,2018,334(2018):453-461. |
| APA | Chen, Meijuan,Yao, Jie,Huang, Yu,Gong, Han,&Chu, Wei.(2018).Enhanced photocatalytic degradation of ciprofloxacin over Bi2O3/(BiO)(2)CO3 heterojunctions: Efficiency, kinetics, pathways, mechanisms and toxicity evaluation.CHEMICAL ENGINEERING JOURNAL,334(2018),453-461. |
| MLA | Chen, Meijuan,et al."Enhanced photocatalytic degradation of ciprofloxacin over Bi2O3/(BiO)(2)CO3 heterojunctions: Efficiency, kinetics, pathways, mechanisms and toxicity evaluation".CHEMICAL ENGINEERING JOURNAL 334.2018(2018):453-461. |
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| Enhanced photocataly（873KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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