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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 林逸彬 | zh_TW |
| dc.contributor.advisor | Yi-Pin Lin | en |
| dc.contributor.author | 邱韋菱 | zh_TW |
| dc.contributor.author | Wei-Ling Qiu | en |
| dc.date.accessioned | 2024-08-14T17:07:34Z | - |
| dc.date.available | 2024-08-15 | - |
| dc.date.copyright | 2024-08-14 | - |
| dc.date.issued | 2024 | - |
| dc.date.submitted | 2024-08-04 | - |
| dc.identifier.citation | Alexopoulou, C., Petala, A., Frontistis, Z., Drivas, C., Kennou, S., Kondarides, D. I., & Mantzavinos, D. (2019). Copper phosphide and persulfate salt: A novel catalytic system for the degradation of aqueous phase micro-contaminants. Applied Catalysis B: Environmental, 244, 178-187.
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/94183 | - |
| dc.description.abstract | 過硫酸鹽包含過單硫酸鹽 (PMS) 和過二硫酸鹽 (PDS) ，已被做為高級氧化程序 (advanced oxidation processes, AOPs) 之氧化劑。由於過硫酸鹽結構特性穩定，因此需透過活化產生自由基或其他反應性物質進行污染物的降解。文獻中已指出過硫酸鹽降解污染物的機制主要可以分為自由基途徑 (radical pathway) 及非自由基途徑 (non-radical pathway) 。本研究使用氧化銅 (CuO) 、氧化鎂 (MgO) 、四氧化三鐵 (Fe3O4) 、銅鐵複合氧化物 (CuFe2O4) 、鎂鐵複合氧化物 (MgFe2O4) 及銅鎂鐵複合氧化物 (CuβMgγFeφO) 活化過硫酸鹽去除水中之2,4-二氯酚，並探討在不同劑量下，2,4-二氯酚的降解效率以及系統中存在之活性物質。研究結果指出，使用CuβMgγFeφO (100 mg/L) 活化PMS (1000 μM) 時，可以在90分鐘內完全去除2,4-二氯酚 (50 μM) 。此反應的反應速率會隨著PMS的初始濃度及CuβMgγFeφO劑量的增加而加快。透過XPS表面分析、自由基捕捉實驗及電子自旋共振分析，發現硫酸根自由基 (sulfate radical, SO4•−) 和單線態氧 (singlet oxygen, 1O2) 及三價銅離子 (≡Cu3+–O–Cu3+≡) 存在於CuβMgγFeφO活化PMS降解2,4-二氯酚之系統中，其中以1O2為主要之反應性物質，因此可以判斷此降解機制主要藉由非自由基途徑進行。 | zh_TW |
| dc.description.abstract | Persulfates, including peroxymonosulfate (PMS) and peroxydisulfate (PDS), have been used as the oxidants in the advanced oxidation processes (AOPs). Persulfates are stable in water and require activation to generate radicals or other reactive species for pollutant degradation. Persulfates degradation can be classified into radical and non-radical pathways. In this research, the removal efficiency of 2,4-dichlorophenol (2,4-DCP) by metal oxide-activated persulfates was investigated. Six metal oxides including CuO, MgO, Fe3O4, CuFe2O4, MgFe2O4, and CuβMgγFeφO were employed. The results showed that CuβMgγFeφO-activated PMS achieved the most effective degradation of 2,4-DCP. The degradation kinetics increased with the increasing initial PMS concentration and the dosage of CuβMgγFeφO. XPS surface analysis, radical quenching tests, and electron paramagnetic resonance (EPR) experiments indicated the presence of sulfate radical (SO4•−), singlet oxygen (1O2), and ≡Cu3+–O–Cu3+≡ in the system, in which 1O2 was identified as the primary reactive species for 2,4-DCP degradation. The results suggested that the activation of PMS by CuβMgγFeφO for the degradation of 2,4-DCP primarily proceeds as a non-radical process. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2024-08-14T17:07:34Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2024-08-14T17:07:34Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | 口試委員會審定書 i
誌謝 ii 摘要 iii Abstract iv Contents v List of Figures vi List of Tables x Chapter 1 Introduction 1 1.1 Background 1 1.2 Research objectives 2 Chapter 2 Literature Review 3 2.1 Persulfate-based advanced oxidation processes 3 2.2 The mechanisms of removing organic pollutants by activated persulfates 4 2.3 Metal-based activators 9 2.4 2,4-dichlorophenol 10 Chapter 3 Materials and Method 11 3.1 Research framework 11 3.2 Chemicals and reagents 13 3.3 Preparation of metal oxides 13 3.4 Experimental procedures 14 3.5 Analytical methods 16 Chapter 4 Results and Discussion 18 4.1 Characterization of metal oxides 18 4.2 Degradation of 2,4-DCP by persulfates activated by metal oxides 24 4.3 Influences of solution compositions on the 2,4-DCP degradation by CuβMgγFeφO-activated PMS 33 4.4 Identification of reactive species and proposed mechanism in the degradation of 2,4-DCP by CuβMgγFeφO-activated PMS 41 4.4.1 Radical quenching test 41 4.4.2 EPR study 44 4.4.3 Proposed activation mechanism 47 Chapter 5 Conclusions and Recommendations 49 5.1 Conclusions 49 5.2 Recommendations 50 References 51 | - |
| dc.language.iso | en | - |
| dc.title | 利用金屬氧化物活化過硫酸鹽降解2,4-二氯酚 | zh_TW |
| dc.title | Degradation of 2,4-dichlorophenol by metal oxide-activated persulfates | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 112-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.oralexamcommittee | 莊易學;潘述元 | zh_TW |
| dc.contributor.oralexamcommittee | Yi-Hsueh Chuang;Shu-Yuan Pan | en |
| dc.subject.keyword | 高級氧化,過硫酸鹽,金屬氧化物,2,4-二氯酚, | zh_TW |
| dc.subject.keyword | Advanced oxidation processes,Persulfates,Metal oxide,2,4-dichlorophenol, | en |
| dc.relation.page | 58 | - |
| dc.identifier.doi | 10.6342/NTU202402819 | - |
| dc.rights.note | 同意授權(限校園內公開) | - |
| dc.date.accepted | 2024-08-07 | - |
| dc.contributor.author-college | 工學院 | - |
| dc.contributor.author-dept | 環境工程學研究所 | - |
| dc.date.embargo-lift | 2029-08-01 | - |
| 顯示於系所單位： | 環境工程學研究所 | |
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