Electron transfer mediated photo-Fenton-like synergistic catalysis of Fe, Cu-doped MIL-101 coupled with Ag 3 PO 4: Quantitative evaluation and DFT calculations
文献类型：期刊论文
| 作者 | Chen, Xiaojuan2; Yao, Liang1,2; Xu, Song2; He, Juhua2; Li, Ning2; Li, Jiaxin2; Liu, Bin2; Zhu, Yanping3; Chen, Xin2; Wang, Hailong2,4 |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2024-06-15 |
| 卷号 | 351页码:15 |
| 关键词 | Photo -Fenton -like catalysis Peroxydisulfate Sulfate radicals Density functional theory |
| ISSN号 | 0269-7491 |
| DOI | 10.1016/j.envpol.2024.124083 |
| 英文摘要 | Widespread use of tetracycline (TC) results in its persistent residue and bioaccumulation in aquatic environments, posing a high toxicity to non -target organisms. In this study, a bimetal -doped composite material Ag 3 PO 4 / MIL-101(Fe,Cu) has been designed for the treatment of TC in aqueous solutions. As the molar ratio of Fe/Cu in composite is 1:1, the obtained material AP/MFe 1 Cu 1 is placed in an aqueous environment under visible light irradiation in the presence of 3 mM peroxydisulfate (PDS), which forms a photo -Fenton -like catalytic system that can completely degrade TC (10 mg/L) within 60 min. Further, the degradation rate constant (0.0668 min - 1 ) is 5.66 and 7.34 times higher than that of AP/MFe and AP/MCu, respectively, demonstrating a significant advantage over single metal -doped catalysts. DFT calculations confirm the strong adsorption capacity and activation advantage of PDS on the composite surface. Therefore, the continuous photogenerated electrons ( e - ) accelerate the activation of PDS and the production of SO 4 center dot- , resulting in the stripping of abundant photogenerated h + for TC oxidation. Meanwhile, the internal circulation of Fe III /Fe II and Cu II /Cu III in composite also greatly enhances the photo -Fenton -like catalytic stability. According to the competitive dynamic experiments, SO 4 center dot- have the greatest contribution to TC degradation (58.93%), followed by 1 O 2 (23.80%). The degradation intermediates (products) identified by high-performance liquid chromatography -mass spectrometry (HPLC/MS) technique indicate the involvement of various processes in TC degradation, such as dehydroxylation, deamination, N-demethylation, and ring opening. Furthermore, as the reaction proceeds, the toxicity of the intermediates produced during TC degradation gradually decreases, which can ensure the safety of the aquatic ecosystem. Overall, this work reveals the synergy mechanism of PDS catalysis and photocatalysis, as well as provides technical support for removal of TC-contaminated wastewater. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001240819700001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78492]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Zhu, Runliang |
| 作者单位 | 1.Xinjiang Inst Technol, Xinjiang 735400, Peoples R China 2.Foshan Univ, Sch Environm & Chem Engn, Foshan 528225, Peoples R China 3.South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Peoples R China 4.Guangdong Acad Sci, Inst Ecoenvironm & Soil Sci, Guangdong Prov Key Lab Integrated Agroenvironm Pol, Guangzhou 510650, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Xiaojuan,Yao, Liang,Xu, Song,et al. Electron transfer mediated photo-Fenton-like synergistic catalysis of Fe, Cu-doped MIL-101 coupled with Ag 3 PO 4: Quantitative evaluation and DFT calculations[J]. ENVIRONMENTAL POLLUTION,2024,351:15. |
| APA | Chen, Xiaojuan.,Yao, Liang.,Xu, Song.,He, Juhua.,Li, Ning.,...&Zhu, Runliang.(2024).Electron transfer mediated photo-Fenton-like synergistic catalysis of Fe, Cu-doped MIL-101 coupled with Ag 3 PO 4: Quantitative evaluation and DFT calculations.ENVIRONMENTAL POLLUTION,351,15. |
| MLA | Chen, Xiaojuan,et al."Electron transfer mediated photo-Fenton-like synergistic catalysis of Fe, Cu-doped MIL-101 coupled with Ag 3 PO 4: Quantitative evaluation and DFT calculations".ENVIRONMENTAL POLLUTION 351(2024):15. |
入库方式： OAI收割
来源：广州地球化学研究所
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