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Dong ZJ, Jiang CC, Zhou Y, Duan JB, Wang LH, Pang SY, Jiang J, Sun XH. Transformation of hydroxylamine to nitrosated and nitrated products during advanced oxidation process. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130537. [PMID: 36493640 DOI: 10.1016/j.jhazmat.2022.130537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/27/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Recently, hydroxylamine (HAm) was introduced to drive advanced oxidation processes (AOPs) for removing organic contaminants. However, we found that HAm-driven Cu(II)/peroxymonosulfate oxidation of phenol produced p-nitrosophenol, 2-nitrophenol and 4-nitrophenol. The total nitro(so) products accounted for approximately 25.0 % of the phenol transformation at certain condition. SO4•- and •OH were identified as the primary and second significant oxidants, respectively. Reactive nitrogen species (RNS) were involved in phenol transformation. The pathway and mechanism of HAm transformation in HAm-driven transition metal ion-catalyzed AOPs were proposed for the first time in this study. The product of HAm via twice single-electron oxidation by Cu(II) is nitroxyl (HNO/NO-), which is a critical oxidation intermediate of HAm. Further oxidation of HNO by SO4•- or •OH is the initial step in propagating radical chain reactions, leading to nitric oxide radical (•NO) and nitrogen dioxide radical (•NO2) as the primary RNS. HAm is a critical intermediate in natural nitrogen cycle, suggesting that HAm can drive the oxidation processes of pollutants in natural environments. Nitro(so) products will be readily produced when AOPs are applied for ecological remediation. This study highlights the formation of toxic nitrosated and nitrated products in HAm-driven AOPs, and the requirement of risk assessments to evaluate the possible health and ecological impacts.
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Affiliation(s)
- Zi-Jun Dong
- College of Civil and Transportation Engineering, the Underground Polis Academy, Shenzhen University, Shenzhen, Guangdong 518060, China; Shenzhen Key Laboratory of Green, Efficient and Intelligent Construction of Underground Metro Station, Shenzhen, Guangdong 518060, China
| | - Cheng-Chun Jiang
- School of Material and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Yue Zhou
- College of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
| | - Jie-Bin Duan
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Li-Hong Wang
- Research Center for Eco-Environmental Sciences (RCEES), Chinese Academy of Sciences, Beijing 100085, China
| | - Su-Yan Pang
- School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun 130118, China
| | - Jin Jiang
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Xiao-Hui Sun
- College of Civil and Transportation Engineering, the Underground Polis Academy, Shenzhen University, Shenzhen, Guangdong 518060, China; Shenzhen Key Laboratory of Green, Efficient and Intelligent Construction of Underground Metro Station, Shenzhen, Guangdong 518060, China
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Comparison of sulfate radical with other reactive species. Curr Opin Chem Eng 2022. [DOI: 10.1016/j.coche.2022.100867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhang C, Wang Y, Jiang Y, Zhang Y, Xie Y, Gong R, Hao Q. Substituent Effect: Synthesis of Three TNP‐Detecting Fluorescent Probes Based on Triazolothiadiazole‐Quinazolinone**. ChemistrySelect 2022. [DOI: 10.1002/slct.202200198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chenglu Zhang
- School of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 P. R. China
| | - Yiming Wang
- School of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 P. R. China
| | - Yanhua Jiang
- School of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 P. R. China
| | - Yining Zhang
- School of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 P. R. China
| | - Yanxuan Xie
- School of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 P. R. China
| | - Rongqing Gong
- School of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 P. R. China
| | - Qiang Hao
- School of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 P. R. China
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Natarajan P, Priya, Chuskit D. Persulfate-nitrogen doped graphene mixture as an oxidant for the synthesis of 3-nitro-4-aryl-2 H-chromen-2-ones from aryl alkynoate esters and nitrite. Org Biomol Chem 2022; 20:4616-4624. [PMID: 35608321 DOI: 10.1039/d2ob00827k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of 3-nitro-4-aryl-2H-chromen-2-ones in good yields have directly been obtained from aryl alkynoate esters and nitrite by employing a mixture of K2S2O8-nitrogen doped graphene as an oxidant in a watery medium at room temperature. A plausible mechanism for the reaction is also reported. It reveals that the product is formed through a cascade of nitro radical addition, spirocyclization, and ester migration. When compared to known methods for the synthesis of 3-nitro-4-aryl-2H-chromen-2-ones from aryl alkynoate esters, this protocol is environmentally friendly, sustainable, practical and energy efficient and does not use a harmful nitro source. Furthermore, nitrogen doped graphene used in this approach can be easily recovered and reused at least four times without losing its activity.
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Affiliation(s)
- Palani Natarajan
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh - 160 014, India.
| | - Priya
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh - 160 014, India.
| | - Deachen Chuskit
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh - 160 014, India.
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