1
|
Clay CD, Mueller CM, Rich CC, Schatz GC, Bruggeman PJ, Frontiera RR. Evidence for Superoxide-Initiated Oxidation of Aniline in Water by Pulsed, Atmospheric Pressure Plasma. J Phys Chem Lett 2024; 15:6918-6926. [PMID: 38935645 DOI: 10.1021/acs.jpclett.4c01323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Plasma-driven solution electrochemistry (PDSE) uses plasma-generated reactive species to drive redox reactions in solution. Nonthermal, atmospheric pressure plasmas, when irradiating water, produce many redox species. While PDSE is a promising chemical tool, there is limited insight into the mechanisms of the reactions due to the variety of short-lived reagents produced. In this study, we use aniline as a model system for studying redox mechanisms of PDSE. We show that the plasma irradiation of aqueous aniline solutions drives the formation of polyaniline oligomer, which is suppressed under acidic starting conditions. The addition of (2,2,6,6-Tetramethylpiperidin-1-yl)oxyl (TEMPO), a radical scavenger, decreases the formation of oligomer by 80%, and the addition of superoxide dismutase fully hinders oligomerization. These results lead us to conclude that the oligomerization of aniline by plasma irradiation is initiated by superoxide. This discovery provides novel insights into PDSE mechanisms and illustrates a potential method of harnessing superoxide for chemical reactions.
Collapse
Affiliation(s)
- Collin D Clay
- University of Minnesota - Twin Cities, Department of Chemistry, Smith Hall, 207 Pleasant St SE, Minneapolis, Minnesota 55455-0431, United States
| | - Chelsea M Mueller
- Northwestern University, Department of Chemistry, 2145 Sheridan Rd., Evanston, Illinois 60208-3113, United States
| | - Christopher C Rich
- University of Minnesota - Twin Cities, Department of Chemistry, Smith Hall, 207 Pleasant St SE, Minneapolis, Minnesota 55455-0431, United States
| | - George C Schatz
- Northwestern University, Department of Chemistry, 2145 Sheridan Rd., Evanston, Illinois 60208-3113, United States
| | - Peter J Bruggeman
- University of Minnesota - Twin Cities, Department of Mechanical Engineering, 111 Church Street SE, Minneapolis, Minnesota 55455, United States
| | - Renee R Frontiera
- University of Minnesota - Twin Cities, Department of Chemistry, Smith Hall, 207 Pleasant St SE, Minneapolis, Minnesota 55455-0431, United States
| |
Collapse
|
2
|
Manickavasagam G, He C, Lin KYA, Saaid M, Oh WD. Recent advances in catalyst design, performance, and challenges of metal-heteroatom-co-doped biochar as peroxymonosulfate activator for environmental remediation. ENVIRONMENTAL RESEARCH 2024; 252:118919. [PMID: 38631468 DOI: 10.1016/j.envres.2024.118919] [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: 02/23/2024] [Revised: 04/02/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024]
Abstract
The escalation of global water pollution due to emerging pollutants has gained significant attention. To address this issue, catalytic peroxymonosulfate (PMS) activation technology has emerged as a promising treatment approach for effectively decontaminating a wide range of pollutants. Recently, modified biochar has become an increasingly attractive as PMS activator. Metal-heteroatom-co-doped biochar (MH-BC) has emerged as a promising catalyst that can provide enhanced performance over heteroatom-doped and metal-doped biochar due to the synergism between metal and heteroatom in promoting PMS activation. Therefore, this review aims to discuss the fabrication pathways (i.e., internal vs external doping and pre-vs post-modification) and key parameters (i.e., source of precursors, synthesis methods, and synthesis conditions) affecting the performance of MH-BC as PMS activator. Subsequently, an overview of all the possible PMS activation pathways by MH-BC is provided. Subsequently, Also, the detection, identification, and quantification of several reactive species (such as, •OH, SO4•-, O2•-, 1O2, and high valent oxo species) generated in the catalytic PMS system by MH-BC are also evaluated. Lastly, the underlying challenges associated with poor stability, the lack of understanding regarding the interaction between metal and heteroatom during PMS activation and quantification of radicals in multi-ROS system are also deliberated.
Collapse
Affiliation(s)
| | - Chao He
- Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, 250, Kuo-Kuang Road, Taichung, Taiwan; Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Mardiana Saaid
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Wen-Da Oh
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia.
| |
Collapse
|
3
|
Liu S, Kang Y, Hua W. Efficient degradation of the refractory organic pollutant by underwater bubbling pulsed discharge plasma: performance, degradation pathway, and toxicity prediction. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:100596-100612. [PMID: 37639092 DOI: 10.1007/s11356-023-29432-6] [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: 07/04/2023] [Accepted: 08/17/2023] [Indexed: 08/29/2023]
Abstract
It is essential to develop an efficient technology for the elimination of refractory contaminants due to their high toxicity. In this study, a novel underwater bubbling pulsed discharge plasma (UBPDP) system was proposed for the degradation of Orange II (OII). The degradation performance experiments showed that by enhancing the peak voltage and pulse frequency, the degradation efficiency of OII increased gradually. The removal efficiencies under different air flow rates were close. Reducing OII concentration and solution conductivity could promote the elimination of OII. Compared with neutral and alkaline conditions, acidic condition was more beneficial to OII degradation. The active species including ·OH, ·O2-, 1O2, and hydrated electrons were all involved in OII degradation. The concentrations of O3 and H2O2 in OII solution were lower than those in deionized water. During discharge, the solution pH increased while conductivity decreased. The variation of UV-vis spectra with treatment time indicated the effective decomposition of OII. Possible degradation pathways were speculated based on LC-MS. The toxicity of intermediate products was predicted by the Toxicity Estimation Software Tool. Coexisting constituents including Cl-, SO42-, HCO3-, and humic acid had a negative effect on OII removal. Finally, the comparison with other technology depicted the advantage of the UBPDP system.
Collapse
Affiliation(s)
- Shuai Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Yong Kang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.
| | - Weijie Hua
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| |
Collapse
|
4
|
Girard-Sahun F, Lefrançois P, Badets V, Arbault S, Clement F. Direct Sensing of Superoxide and Its Relatives Reactive Oxygen and Nitrogen Species in Phosphate Buffers during Cold Atmospheric Plasmas Exposures. Anal Chem 2022; 94:5555-5565. [PMID: 35343678 DOI: 10.1021/acs.analchem.1c04998] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study aims at sensing in situ reactive oxygen and nitrogen species (RONS) and specifically superoxide anion (O2•-) in aqueous buffer solutions exposed to cold atmospheric plasmas (CAPs). CAPs were generated by ionizing He gas shielded with variable N2/O2 mixtures. Thanks to ultramicroelectrodes protected against the high electric fields transported by the ionization waves of CAPs, the production of superoxide and several RONS was electrochemically directly detected in liquids during their plasma exposure. Complementarily, optical emissive spectroscopy (OES) was used to study the plasma phase composition and its correlation with the chemistry in the exposed liquid. The specific production of O2•-, a biologically reactive redox species, was analyzed by cyclic voltammetry (CV), in both alkaline (pH 11), where the species is fairly stable, and physiological (pH 7.4) conditions, where it is unstable. To understand its generation with respect to the plasma chemistry, we varied the shielding gas composition of CAPs to directly impact on the RONS composition at the plasma-liquid interface. We observed that the production and accumulation of RONS in liquids, including O2•-, depends on the plasma composition, with N2-based shieldings providing the highest superoxide concentrations (few 10s of micromolar at most) and of its derivatives (hundreds of micromolar). In situ spectroscopic and electrochemical analyses provide a high resolution kinetic and quantitative understanding of the interactions between CAPs and physiological solutions for biomedical applications.
Collapse
Affiliation(s)
- Fanny Girard-Sahun
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, 64600 Anglet, France.,Université de Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, NSysA group, F-33402 Talence France
| | - Pauline Lefrançois
- Université de Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, NSysA group, F-33402 Talence France
| | - Vasilica Badets
- Université de Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, NSysA group, F-33402 Talence France
| | - Stéphane Arbault
- Université de Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, NSysA group, F-33402 Talence France.,Université de Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, MSB group, F-33600 Pessac, France
| | - Franck Clement
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, 64600 Anglet, France
| |
Collapse
|
5
|
Tampieri F, Ginebra MP, Canal C. Quantification of Plasma-Produced Hydroxyl Radicals in Solution and their Dependence on the pH. Anal Chem 2021; 93:3666-3670. [PMID: 33596048 PMCID: PMC7931173 DOI: 10.1021/acs.analchem.0c04906] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
HO radicals are the most important reactive species generated during water treatment by non-thermal plasma devices. In this letter, we report the first quantification of the steady-state concentration and lifetime of plasma-produced hydroxyl radicals in water solutions at pH 3 and 7, and we discuss the differences based on their reactivity with other plasma-generated species. Finally, we show to what extent the use of chemical probes to quantify short-lived reactive species has an influence on the results and that it should be taken into account.
Collapse
Affiliation(s)
- Francesco Tampieri
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), c. Eduard Maristany 16, 08019 Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain.,Research Centre for Biomedical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), c. Eduard Maristany 16, 08019 Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain.,Research Centre for Biomedical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain.,Institute for Bioengineering of Catalonia, Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Cristina Canal
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), c. Eduard Maristany 16, 08019 Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain.,Research Centre for Biomedical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| |
Collapse
|