51
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Important parameters in plasma jets for the production of RONS in liquids for plasma medicine: A brief review. Front Chem Sci Eng 2019. [DOI: 10.1007/s11705-019-1801-8] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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52
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Sun D, McLaughlan J, Zhang L, Falzon BG, Mariotti D, Maguire P, Sun D. Atmospheric Pressure Plasma-Synthesized Gold Nanoparticle/Carbon Nanotube Hybrids for Photothermal Conversion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:4577-4588. [PMID: 30840476 DOI: 10.1021/acs.langmuir.8b03945] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, a room-temperature atmospheric pressure direct-current plasma has been deployed for the one-step synthesis of gold nanoparticle/carboxyl group-functionalized carbon nanotube (AuNP/CNT-COOH) nanohybrids in aqueous solution for the first time. Uniformly distributed AuNPs are formed on the surface of CNT-COOH, without the use of reducing agents or surfactants. The size of the AuNP can be tuned by changing the gold salt precursor concentration. UV-vis, ζ-potential, and X-ray photoelectron spectroscopy suggest that carboxyl surface functional groups on CNTs served as nucleation and growth sites for AuNPs and the multiple potential reaction pathways induced by the plasma chemistry have been elucidated in detail. The nanohybrids exhibit significantly enhanced Raman scattering and photothermal conversion efficiency that are essential for potential multimodal cancer treatment applications.
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Affiliation(s)
- Daye Sun
- Advanced Composites Research Group (ACRG), School of Mechanical and Aerospace Engineering , Queen's University , Belfast BT9 5AH , U.K
| | | | - Li Zhang
- Research Center for Nano-Biomaterials, Analytical & Testing Center , Sichuan University , Chengdu 610065 , China
| | - Brian G Falzon
- Advanced Composites Research Group (ACRG), School of Mechanical and Aerospace Engineering , Queen's University , Belfast BT9 5AH , U.K
| | - Davide Mariotti
- Nanotechnology and Integrated Bioengineering Centre (NIBEC) , Ulster University , Newtownabbey BT37 0QB , U.K
| | - Paul Maguire
- Nanotechnology and Integrated Bioengineering Centre (NIBEC) , Ulster University , Newtownabbey BT37 0QB , U.K
| | - Dan Sun
- Advanced Composites Research Group (ACRG), School of Mechanical and Aerospace Engineering , Queen's University , Belfast BT9 5AH , U.K
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53
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Bekeschus S, Lippert M, Diepold K, Chiosis G, Seufferlein T, Azoitei N. Physical plasma-triggered ROS induces tumor cell death upon cleavage of HSP90 chaperone. Sci Rep 2019; 9:4112. [PMID: 30858416 PMCID: PMC6412052 DOI: 10.1038/s41598-019-38580-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 12/20/2018] [Indexed: 12/31/2022] Open
Abstract
HSP90 is a ubiquitously expressed molecular chaperone implicated in the correct folding and maturation of a plethora of proteins including protein kinases and transcription factors. While disruption of chaperone activity was associated with augmented cancer cell death and decreased tumor growth both in vitro and in vivo, the regulation of HSP90 is not clearly understood. Here we report that treatment of cancer cells with cold physical plasma, an emerging and less aggressive tumor therapy, resulted in ROS generation which subsequently triggered the cleavage of HSP90. Notably, cleavage of HSP90 was followed by the degradation of PKD2, a crucial regulator of tumor growth and angiogenesis. Pre-sensitization of cancer cells with subliminal doses of PU-H71, an HSP90 inhibitor currently under clinical evaluation, followed by treatment with cold-plasma, synergistically and negatively impacted on the viability of cancer cells. Taken together, cold-plasma can be used in conjunction with pharmacologic treatment in order to target the expression and activity of HSP90 and the downstream client proteins implicated in various cancer cell capabilities.
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Affiliation(s)
- Sander Bekeschus
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP Greifswald), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany.
| | - Maxi Lippert
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP Greifswald), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
| | - Kristina Diepold
- Center for Internal Medicine I, University Hospital of Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany
| | - Gabriela Chiosis
- Department of Molecular Pharmacology and Chemistry, Memorial Sloan-Kettering Institute New York, New York, NY, USA
| | - Thomas Seufferlein
- Center for Internal Medicine I, University Hospital of Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany
| | - Ninel Azoitei
- Center for Internal Medicine I, University Hospital of Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany.
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54
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Sakakibara N, Ito T, Terashima K. Plasma-Ice Interface as Thermodynamically Size-Tunable Reaction Field: Development of Plasma-Assisted Freeze Templating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:3013-3019. [PMID: 30716274 DOI: 10.1021/acs.langmuir.8b04117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Interfaces or interfacial layers, such as gas-liquid interfaces, are critical for many physical and chemical reactions and are utilized for designing a wide range of materials. In this study, we propose a plasma-assisted freeze templating (PFT) method for materials processing. It uses a new type of interfacial reaction field, i.e., plasma-ice interface. In PFT, a micro- or nanoscale liquid layer formed on the ice body of a frozen aqueous solution is used as a reaction field in which the solutes are highly enriched and the chemical reactions are initiated by reactive species from the plasma. We demonstrated the synthesis of a self-standing gold nanoparticle (AuNP) film of porous structure by PFT in which a helium cryoplasma jet was irradiated onto a frozen solution of auric ions. This PFT method accomplished a surfactant-free and area-selective synthesis of a AuNP film and was unique in comparison with the conventional chemical synthesis of nanostructured gold materials. Furthermore, simple control of the AuNP film was demonstrated by tuning the thickness of the thin liquid layer. This was done by changing the temperature or concentration of the aqueous solution. PFT was demonstrated as a thermodynamically size-tunable scheme for material design; it exploits the plasma-ice interface and is expected to become a novel technique for a wide range of micro- and nanoengineering applications.
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Affiliation(s)
- Noritaka Sakakibara
- Department of Advanced Materials Science, Graduate School of Frontier Sciences , The University of Tokyo , 5-1-5 Kashiwanoha , Kashiwa , Chiba 277-8561 , Japan
| | - Tsuyohito Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences , The University of Tokyo , 5-1-5 Kashiwanoha , Kashiwa , Chiba 277-8561 , Japan
| | - Kazuo Terashima
- Department of Advanced Materials Science, Graduate School of Frontier Sciences , The University of Tokyo , 5-1-5 Kashiwanoha , Kashiwa , Chiba 277-8561 , Japan
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55
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Wilhelm J, VandeVondele J, Rybkin VV. Dynamics of the Bulk Hydrated Electron from Many-Body Wave-Function Theory. Angew Chem Int Ed Engl 2019; 58:3890-3893. [PMID: 30776181 PMCID: PMC6594240 DOI: 10.1002/anie.201814053] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Indexed: 11/10/2022]
Abstract
The structure of the hydrated electron is a matter of debate as it evades direct experimental observation owing to the short life time and low concentrations of the species. Herein, the first molecular dynamics simulation of the bulk hydrated electron based on correlated wave‐function theory provides conclusive evidence in favor of a persistent tetrahedral cavity made up by four water molecules, and against the existence of stable non‐cavity structures. Such a cavity is formed within less than a picosecond after the addition of an excess electron to neat liquid water, with less regular cavities appearing as intermediates. The cavities are bound together by weak H−H bonds, the number of which correlates well with the number of coordinated water molecules, each type of cavity leaving a distinct spectroscopic signature. Simulations predict regions of negative spin density and a gyration radius that are both in agreement with experimental data.
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Affiliation(s)
- Jan Wilhelm
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland.,Current address: BASF SE, Ludwigshafen, Germany
| | - Joost VandeVondele
- Scientific Software & Libraries unit, CSCS, ETH Zurich, Wolfgang-Pauli-Strasse 27, CH-8093, Zurich, Switzerland
| | - Vladimir V Rybkin
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
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56
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Wilhelm J, VandeVondele J, Rybkin VV. Dynamics of the Bulk Hydrated Electron from Many‐Body Wave‐Function Theory. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jan Wilhelm
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland
- Current address: BASF SE Ludwigshafen Germany
| | - Joost VandeVondele
- Scientific Software & Libraries unit, CSCSETH Zurich Wolfgang-Pauli-Strasse 27 CH-8093 Zurich Switzerland
| | - Vladimir V. Rybkin
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland
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57
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Kaushik NK, Kaushik N, Linh NN, Ghimire B, Pengkit A, Sornsakdanuphap J, Lee SJ, Choi EH. Plasma and Nanomaterials: Fabrication and Biomedical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E98. [PMID: 30646530 PMCID: PMC6358811 DOI: 10.3390/nano9010098] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 12/28/2018] [Accepted: 01/08/2019] [Indexed: 12/20/2022]
Abstract
Application of plasma medicine has been actively explored during last several years. Treating every type of cancer remains a difficult task for medical personnel due to the wide variety of cancer cell selectivity. Research in advanced plasma physics has led to the development of different types of non-thermal plasma devices, such as plasma jets, and dielectric barrier discharges. Non-thermal plasma generates many charged particles and reactive species when brought into contact with biological samples. The main constituents include reactive nitrogen species, reactive oxygen species, and plasma ultra-violets. These species can be applied to synthesize biologically important nanomaterials or can be used with nanomaterials for various kinds of biomedical applications to improve human health. This review reports recent updates on plasma-based synthesis of biologically important nanomaterials and synergy of plasma with nanomaterials for various kind of biological applications.
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Affiliation(s)
- Nagendra Kumar Kaushik
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea.
| | - Neha Kaushik
- Department of Life Science, Hanyang University, Seoul 04763, Korea.
| | - Nguyen Nhat Linh
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea.
| | - Bhagirath Ghimire
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea.
| | - Anchalee Pengkit
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea.
| | - Jirapong Sornsakdanuphap
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea.
| | - Su-Jae Lee
- Department of Life Science, Hanyang University, Seoul 04763, Korea.
| | - Eun Ha Choi
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea.
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58
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Gibson AR, Donkó Z, Alelyani L, Bischoff L, Hübner G, Bredin J, Doyle S, Korolov I, Niemi K, Mussenbrock T, Hartmann P, Dedrick JP, Schulze J, Gans T, O'Connell D. Disrupting the spatio-temporal symmetry of the electron dynamics in atmospheric pressure plasmas by voltage waveform tailoring. PLASMA SOURCES SCIENCE & TECHNOLOGY 2019; 28:01LT01. [PMID: 34776750 PMCID: PMC7611983 DOI: 10.1088/1361-6595/aaf535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Single frequency, geometrically symmetric Radio-Frequency (rf) driven atmospheric pressure plasmas exhibit temporally and spatially symmetric patterns of electron heating, and consequently, charged particle densities and fluxes. Using a combination of phase-resolved optical emission spectroscopy and kinetic plasma simulations, we demonstrate that tailored voltage waveforms consisting of multiple rf harmonics induce targeted disruption of these symmetries. This confines the electron heating to small regions of time and space and enables the electron energy distribution function to be tailored.
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Affiliation(s)
- Andrew R Gibson
- Institute for Electrical Engineering and Plasma Technology Ruhr-Universität Bochum, Germany
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DD, United Kingdom
| | - Zoltán Donkó
- Wigner Research Centre for Physics, Hungarian Academy of Sciences, 1121 Budapest, Konkoly-Thege Miklós str. 29-33, Hungary
| | - Layla Alelyani
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DD, United Kingdom
| | - Lena Bischoff
- Institute for Electrical Engineering and Plasma Technology Ruhr-Universität Bochum, Germany
| | - Gerrit Hübner
- Institute for Electrical Engineering and Plasma Technology Ruhr-Universität Bochum, Germany
| | - Jérôme Bredin
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DD, United Kingdom
| | - Scott Doyle
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DD, United Kingdom
| | - Ihor Korolov
- Institute for Electrical Engineering and Plasma Technology Ruhr-Universität Bochum, Germany
| | - Kari Niemi
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DD, United Kingdom
| | - Thomas Mussenbrock
- Electrodynamics and Physical Electronics Group, Brandenburg University of Technology Cottbus-Senftenberg, Cottbus, Germany
| | - Peter Hartmann
- Wigner Research Centre for Physics, Hungarian Academy of Sciences, 1121 Budapest, Konkoly-Thege Miklós str. 29-33, Hungary
| | - James P Dedrick
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DD, United Kingdom
| | - Julian Schulze
- Institute for Electrical Engineering and Plasma Technology Ruhr-Universität Bochum, Germany
- Department of Physics, West Virginia University, Morgantown, WV 26506, United States of America
| | - Timo Gans
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DD, United Kingdom
| | - Deborah O'Connell
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DD, United Kingdom
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59
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Jiang X, Lin Z, Zeng X, He J, Xu F, Deng P, Jia J, Jiang X, Hou X, Long Z. Plasma-catalysed reaction Mn+ + L–H → MOFs: facile and tunable construction of metal–organic frameworks in dielectric barrier discharge. Chem Commun (Camb) 2019; 55:12192-12195. [DOI: 10.1039/c9cc06795g] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A fast, energy-saving and green strategy was proposed for preparing diverse and fine-tuned metal–organic frameworks in either DMF or ethanol, catalyzed by liquid-phase plasma generated via dielectric barrier discharge.
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Affiliation(s)
- Xue Jiang
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- China
| | - Zhi'en Lin
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- China
| | - Xiaoliang Zeng
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Juan He
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- China
| | - Fujian Xu
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Pengchi Deng
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Jia Jia
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Xiaoming Jiang
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Xiandeng Hou
- Key Laboratory of Green Chemistry & Technology (Ministry of Education)
- College of Chemistry
- Sichuan University
- Chengdu 610064
- China
| | - Zhou Long
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
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60
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Hawtof R, Ghosh S, Guarr E, Xu C, Mohan Sankaran R, Renner JN. Catalyst-free, highly selective synthesis of ammonia from nitrogen and water by a plasma electrolytic system. SCIENCE ADVANCES 2019; 5:eaat5778. [PMID: 30746439 PMCID: PMC6357762 DOI: 10.1126/sciadv.aat5778] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 12/04/2018] [Indexed: 05/19/2023]
Abstract
There is a growing need for scalable ammonia synthesis at ambient conditions that relies on renewable sources of energy and feedstocks to replace the Haber-Bosch process. Electrically driven approaches are an ideal strategy for the reduction of nitrogen to ammonia but, to date, have suffered from low selectivity associated with the catalyst. Here, we present a hybrid electrolytic system characterized by a gaseous plasma electrode that facilitates the study of ammonia formation in the absence of any material surface. We find record-high faradaic efficiency (up to 100%) for ammonia from nitrogen and water at atmospheric pressure and temperature with this system. Ammonia measurements under varying reaction conditions in combination with scavengers reveal that the unprecedented selectivity is achieved by solvated electrons produced at the plasma-water interface, which react favorably with protons to produce the key hydrogen radical intermediate. Our results demonstrate that limitations in selectivity can be circumvented by using catalyst-free solvated electron chemistry. In the absence of adsorption steps, the importance of controlling proton concentration and transport is also revealed.
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61
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Rumbach P, Bartels DM, Go DB. The penetration and concentration of solvated electrons and hydroxyl radicals at a plasma-liquid interface. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1361-6595/aaed07] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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62
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Wei G, Liu X, Lu Y, Wang Z, Liu S, Ye G, Chen J. Microplasma Anode Meeting Molten Salt Electrochemistry: Charge Transfer and Atomic Emission Spectral Analysis. Anal Chem 2018; 90:13163-13166. [PMID: 30387345 DOI: 10.1021/acs.analchem.8b02872] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molten salt electrolysis is normally conducted with solid anode, such as noble metal or graphite, which has defects such as high cost or emission of carbon oxide. Herein, we report that a microplasma based on atmospheric-pressure glow discharge could act as a kind of gaseous anode for electrolysis in molten salt. When the Ag/Ag+ redox couple was chosen as the research object, the microplasma anode could initiate charge-transfer reactions in the molten salt and Ag could be electrodeposited with current efficiency of above 90%. The microplasma anode has also shown excellent anticorrosive performance in both chloride and carbonate molten salt. Furthermore, the microplasma anode could potentially serve as an excitation source of atomic emission spectrometry (AES), making it possible to determine the concentration of Ag ions in the molten salt in situ and in real-time. With properties such as being carbon-free and having corrosion resistance and extensive utilization for analysis, the microplasma anode has opened a new direction for molten salt electrochemistry.
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Affiliation(s)
- Guoyu Wei
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Centre of Advanced Nuclear Energy Technology, Beijing Key Lab of Radioactive Waste Treatment , Tsinghua University , Beijing , 100084 , People's Republic of China
| | - Xuegang Liu
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Centre of Advanced Nuclear Energy Technology, Beijing Key Lab of Radioactive Waste Treatment , Tsinghua University , Beijing , 100084 , People's Republic of China
| | - Yuexiang Lu
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Centre of Advanced Nuclear Energy Technology, Beijing Key Lab of Radioactive Waste Treatment , Tsinghua University , Beijing , 100084 , People's Republic of China
| | - Zhe Wang
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Centre of Advanced Nuclear Energy Technology, Beijing Key Lab of Radioactive Waste Treatment , Tsinghua University , Beijing , 100084 , People's Republic of China
| | - Shuang Liu
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Centre of Advanced Nuclear Energy Technology, Beijing Key Lab of Radioactive Waste Treatment , Tsinghua University , Beijing , 100084 , People's Republic of China
| | - Gang Ye
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Centre of Advanced Nuclear Energy Technology, Beijing Key Lab of Radioactive Waste Treatment , Tsinghua University , Beijing , 100084 , People's Republic of China
| | - Jing Chen
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Centre of Advanced Nuclear Energy Technology, Beijing Key Lab of Radioactive Waste Treatment , Tsinghua University , Beijing , 100084 , People's Republic of China
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63
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Lin L, Starostin SA, Li S, Hessel V. Synthesis of metallic nanoparticles by microplasma. PHYSICAL SCIENCES REVIEWS 2018. [DOI: 10.1515/psr-2017-0121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The synthesis of metallic nanoparticles has been of long standing interest, primarily induced by their novel and unique properties that differ considerably from bulk materials. Despite various methods have been developed, it is still a challenge to produce high-quality metallic nanoparticles with controllable properties in a simple, cost-effective and environmentally benign manner. However, the development of the microplasma-assisted technology can bring an answer to this formidable challenge. In the present work, four main microplasma configurations used for metallic synthesis of metallic nanoparticles are reviewed. These are hollow-electrode microdischarges, microplasma jets with external electrodes, microplasma jets with consumable electrodes and plasma–liquid systems. The state of the art characterization methodologies and diagnostic techniques for in situ microplasma-assisted precursor dissociation as well as ex situ metallic nanoparticles analysis is also summarized. Further, a broad category of representative examples of microplasma-induced metallic nanoparticle fabrication is presented, together with the discussion of possible synthesis mechanisms. This is followed by a brief introduction to related safety considerations. Finally, the future perspectives, associated challenges and feasible solutions for scale-up of this technique are pointed out.
Graphical Abstract:
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64
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Gorbanev Y, Privat-Maldonado A, Bogaerts A. Analysis of Short-Lived Reactive Species in Plasma-Air-Water Systems: The Dos and the Do Nots. Anal Chem 2018; 90:13151-13158. [PMID: 30289686 DOI: 10.1021/acs.analchem.8b03336] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
This Feature addresses the analysis of the reactive species generated by nonthermal atmospheric pressure plasmas, which are widely employed in industrial and biomedical research, as well as first clinical applications. We summarize the progress in detection of plasma-generated short-lived reactive oxygen and nitrogen species in aqueous solutions, discuss the potential and limitations of various analytical methods in plasma-liquid systems, and provide an outlook on the possible future research goals in development of short-lived reactive species analysis methods for a general nonspecialist audience.
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Affiliation(s)
- Yury Gorbanev
- Research Group PLASMANT, Department of Chemistry , University of Antwerp , Wilrijk , Antwerpen , Belgium BE-2610
| | - Angela Privat-Maldonado
- Research Group PLASMANT, Department of Chemistry , University of Antwerp , Wilrijk , Antwerpen , Belgium BE-2610.,Center for Oncological Research (CORE) , University of Antwerp , Wilrijk , Antwerpen , Belgium BE-2610
| | - Annemie Bogaerts
- Research Group PLASMANT, Department of Chemistry , University of Antwerp , Wilrijk , Antwerpen , Belgium BE-2610
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65
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An HR, Hong YC, Kim H, Huh JY, Park EC, Park SY, Jeong Y, Park JI, Kim JP, Lee YC, Hong WK, Oh YK, Kim YJ, Yang M, Lee HU. Studies on mass production and highly solar light photocatalytic properties of gray hydrogenated-TiO 2 sphere photocatalysts. JOURNAL OF HAZARDOUS MATERIALS 2018; 358:222-233. [PMID: 29990810 DOI: 10.1016/j.jhazmat.2018.06.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 06/21/2018] [Accepted: 06/24/2018] [Indexed: 06/08/2023]
Abstract
In this paper, it is first reported that gray hydrogenated TiO2 sphere photocatalysts (H-TiO2) with high reactivity to solar light are mass produced within a few minutes using an underwater discharge plasma modified sol-gel method at room temperature and atmospheric pressure. This plasma modified system is an easy one-step in-situ synthetic process and the crystallinity, hydrogenation, and spherical structure of H-TiO2 are achieved by the synergy effect between the continuous reaction of highly energetic atomic and molecular species generated from the underwater plasma and surface tension of water. The resultant H-TiO2 demonstrated high anatase/rutile bicrystallinity and extended optical absorption spectrum from the ultraviolet (UV) to visible range. Furthermore, various defects including oxygen vacancies and hydroxyl species on the TiO2 surface permitted the enhancement of the photocatalytic performance. It was demonstrated that H-TiO2 photocatalysts showed significant degradation efficiencies for reactive black 5 (RB 5), rhodamine B (Rho B), and phenol (Ph) under solar light irradiation, up to approximately 5 times higher than that of commercial anatase TiO2 (C-TiO2), which resulted in good water purification. Notably, it was also possible to cultivate HepG2 cells using such well-purified water (to degrees up to 76%), with minimal cytotoxicity. Considering all these results, we believe that this novel plasma technology is promising for important environmental applications.
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Affiliation(s)
- Ha-Rim An
- Advanced Nano-surface Research Group, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Yong Cheol Hong
- Plasma Technology Research Center, National Fusion Research Institute, Gunsan 54004, Republic of Korea; NPAC, Daejeon 305-806, Republic of Korea.
| | - Hyeran Kim
- Advanced Nano-surface Research Group, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Jin Young Huh
- Plasma Technology Research Center, National Fusion Research Institute, Gunsan 54004, Republic of Korea; Department of Electrical and Biological Physics, Kwangwoon University, 447-1 Wolgye-dong, Nowon-gu, Seoul 01897, Republic of Korea
| | - Edmond Changkyun Park
- Division of Bio-Analytical Science, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - So Young Park
- Advanced Nano-surface Research Group, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Yesul Jeong
- High Technology Components & Materials Research Center, Korea Basic Science Institute, Busan 46742, Republic of Korea
| | - Ji-In Park
- High Technology Components & Materials Research Center, Korea Basic Science Institute, Busan 46742, Republic of Korea
| | - Jong-Pil Kim
- High Technology Components & Materials Research Center, Korea Basic Science Institute, Busan 46742, Republic of Korea
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, Republic of Korea
| | - Woong-Ki Hong
- Jeonju Center, Korea Basic Science Institute, Jeonju, Jeollabuk-do, 54907, Republic of Korea
| | - You-Kwan Oh
- School of Chemical and Biomolecular Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Youn Jung Kim
- Center for Research Facilities, Andong National University, Andong 36729, Republic of Korea
| | - MinHo Yang
- Department of Energy Engineering, Dankook University, Cheonan 31116, Republic of Korea
| | - Hyun Uk Lee
- Advanced Nano-surface Research Group, Korea Basic Science Institute, Daejeon 34133, Republic of Korea.
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67
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Kondeti VSSK, Phan CQ, Wende K, Jablonowski H, Gangal U, Granick JL, Hunter RC, Bruggeman PJ. Long-lived and short-lived reactive species produced by a cold atmospheric pressure plasma jet for the inactivation of Pseudomonas aeruginosa and Staphylococcus aureus. Free Radic Biol Med 2018; 124:275-287. [PMID: 29864482 DOI: 10.1016/j.freeradbiomed.2018.05.083] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 05/11/2018] [Accepted: 05/28/2018] [Indexed: 12/29/2022]
Abstract
Different chemical pathways leading to the inactivation of Pseudomonas aeruginosa and Staphylococcus aureus by a cold atmospheric pressure plasma jet (APPJ) in buffered and non-buffered solutions are reported. As APPJs produce a complex mixture of reactive species in solution, a comprehensive set of diagnostics were used to assess the liquid phase chemistry. This includes absorption and electron paramagnetic resonance spectroscopy in addition to a scavenger study to assess the relative importance of the various plasma produced species involved in the inactivation of bacteria. Different modes of inactivation of bacteria were found for the same plasma source depending on the solution and the plasma feed gas. The inactivation of bacteria in saline is due to the production of short-lived species in the case of argon plasma when the plasma touches the liquid. Long-lived species (ClO-) formed by the abundant amount of O. radicals produced by the plasmas played a dominant role in the case of Ar + 1% O2 and Ar + 1% air plasmas when the plasma is not in direct contact with the liquid. Inactivation of bacteria in distilled water was found to be due to the generation of short-lived species: O. &O2.- for Ar + 1% O2 plasma and O2.- (and .OH in absence of saline) for Ar plasma.
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Affiliation(s)
- V S Santosh K Kondeti
- Department of Mechanical Engineering, University of Minnesota, 111, Church Street, SE, Minneapolis, MN 55455, USA.
| | - Chi Q Phan
- Department of Microbiology and Immunology, University of Minnesota, Microbiology Research Facility, 689, SE, 23rd Ave, Minneapolis, MN 55455, USA.
| | - Kristian Wende
- ZIK Plasmatis at Leibniz Institute for Plasma Science and Technology e.V. (INP Greifswald e.V.), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany.
| | - Helena Jablonowski
- ZIK Plasmatis at Leibniz Institute for Plasma Science and Technology e.V. (INP Greifswald e.V.), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany.
| | - Urvashi Gangal
- Department of Mechanical Engineering, University of Minnesota, 111, Church Street, SE, Minneapolis, MN 55455, USA.
| | - Jennifer L Granick
- Department of Veterinary Clinical Sciences, University of Minnesota, 339 Veterinary Medical Center, 1352 Boyd Ave, Saint Paul, MN 55108, USA.
| | - Ryan C Hunter
- Department of Microbiology and Immunology, University of Minnesota, Microbiology Research Facility, 689, SE, 23rd Ave, Minneapolis, MN 55455, USA.
| | - Peter J Bruggeman
- Department of Mechanical Engineering, University of Minnesota, 111, Church Street, SE, Minneapolis, MN 55455, USA.
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68
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Klarenaar BLM, Guaitella O, Engeln R, Sobota A. How dielectric, metallic and liquid targets influence the evolution of electron properties in a pulsed He jet measured by Thomson and Raman scattering. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1361-6595/aad4d7] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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69
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Delgado HE, Rumbach P, Bartels DM, Go DB. Total Internal Reflection Absorption Spectroscopy (TIRAS) for the Detection of Solvated Electrons at a Plasma-liquid Interface. J Vis Exp 2018. [PMID: 29443040 DOI: 10.3791/56833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The total internal reflection absorption spectroscopy (TIRAS) method presented in this article uses an inexpensive diode laser to detect solvated electrons produced by a low-temperature plasma in contact with an aqueous solution. Solvated electrons are powerful reducing agents, and it has been postulated that they play an important role in the interfacial chemistry between a gaseous plasma or discharge and a conductive liquid. However, due to the high local concentrations of reactive species at the interface, they have a short average lifetime (~1 µs), which makes them extremely difficult to detect. The TIRAS technique uses a unique total internal reflection geometry combined with amplitude-modulated lock-in amplification to distinguish solvated electrons' absorbance signal from other spurious noise sources. This enables the in situ detection of short-lived intermediates in the interfacial region, as opposed to the bulk measurement of stable products in the solution. This approach is especially attractive for the field of plasma electrochemistry, where much of the important chemistry is driven by short-lived free radicals. This experimental method has been used to analyze the reduction of nitrite (NO2-(aq)), nitrate (NO3-(aq)), hydrogen peroxide (H2O2(aq)), and dissolved carbon dioxide (CO2(aq)) by plasma-solvated electrons and deduce effective rate constants. Limitations of the method may arise in the presence of unintended parallel reactions, such as air contamination in the plasma, and absorbance measurements may also be hindered by the precipitation of reduced electrochemical products. Overall, the TIRAS method can be a powerful tool for studying the plasma-liquid interface, but its effectiveness depends on the particular system and reaction chemistry under study.
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Affiliation(s)
- Hernan E Delgado
- Department of Chemical and Biomolecular Engineering, University of Notre Dame
| | - Paul Rumbach
- Department of Aerospace and Mechanical Engineering, University of Notre Dame;
| | - David M Bartels
- Department of Chemistry and Biochemistry, Notre Dame Radiation Laboratory, University of Notre Dame
| | - David B Go
- Department of Chemical and Biomolecular Engineering, University of Notre Dame; Department of Aerospace and Mechanical Engineering, University of Notre Dame;
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Abstract
Saint Elmo's fire and lightning are two known forms of naturally occurring atmospheric pressure plasmas. As a technology, nonthermal plasmas are induced from artificially created electromagnetic or electrostatic fields. Here we report the observation of arguably a unique case of a naturally formed such plasma, created in air at room temperature without external electromagnetic action, by impinging a high-speed microjet of deionized water on a dielectric solid surface. We demonstrate that tribo-electrification from extreme and focused hydrodynamic shear is the driving mechanism for the generation of energetic free electrons. Air ionization results in a plasma that, unlike the general family, is topologically well defined in the form of a coherent toroidal structure. Possibly confined through its self-induced electromagnetic field, this plasmoid is shown to emit strong luminescence and discrete-frequency radio waves. Our experimental study suggests the discovery of a unique platform to support experimentation in low-temperature plasma science.
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71
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Galář P, Khun J, Kopecký D, Scholtz V, Trchová M, Fučíková A, Jirešová J, Fišer L. Influence of non-thermal plasma on structural and electrical properties of globular and nanostructured conductive polymer polypyrrole in water suspension. Sci Rep 2017; 7:15068. [PMID: 29118369 PMCID: PMC5678096 DOI: 10.1038/s41598-017-15184-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 10/23/2017] [Indexed: 11/09/2022] Open
Abstract
Non-thermal plasma has proved its benefits in medicine, plasma assisted polymerization, food industry and many other fields. Even though, the ability of non-thermal plasma to modify surface properties of various materials is generally known, only limited attention has been given to exploitations of this treatment on conductive polymers. Here, we show study of non-thermal plasma treatment on properties of globular and nanostructured polypyrrole in the distilled water. We observe that plasma presence over the suspension level doesn't change morphology of the polymer (shape), but significantly influences its elemental composition and physical properties. After 60 min of treatment, the relative concentration of chloride counter ions decreased approximately 3 and 4 times for nanostructured and globular form, respectively and concentration of oxygen increased approximately 3 times for both forms. Simultaneously, conductivity decrease (14 times for globular and 2 times for nanostructured one) and changes in zeta potential characteristics of both samples were observed. The modification evolution was dominated by multi-exponential function with time constants having values approximately 1 and 10 min for both samples. It is expected that these time constants are related to two modification processes connected to direct presence of the spark and to long-lived species generated by the plasma.
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Affiliation(s)
- Pavel Galář
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, 166 28, Czech Republic.
| | - Josef Khun
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, 166 28, Czech Republic
| | - Dušan Kopecký
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, 166 28, Czech Republic
| | - Vladimír Scholtz
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, 166 28, Czech Republic
| | - Miroslava Trchová
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague, 162 06, Czech Republic
| | - Anna Fučíková
- Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, 121 16, Prague, Czech Republic
| | - Jana Jirešová
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, 166 28, Czech Republic
| | - Ladislav Fišer
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, 166 28, Czech Republic
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72
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Van de Moortel N, Van den Broeck R, Degrève J, Dewil R. Comparing glow discharge plasma and ultrasound treatment for improving aerobic respiration of activated sludge. WATER RESEARCH 2017; 122:207-215. [PMID: 28601033 DOI: 10.1016/j.watres.2017.05.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 05/22/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
In this paper, a new and innovative technique, glow discharge plasma, is introduced for the treatment of activated sludge, whereby its effect on sludge solubilization, settleability, floc structure and biomass activity for carbon removal and nitrification is investigated. The obtained results are compared to the use of ultrasound for activated sludge treatment, a technique known for its potential to enhancing biomass activity. Results indicate that ultrasound is up to 9 times more efficient in solubilizing activated sludge and disrupting the sludge floc. However, ultrasound has a detrimental effect on sludge settling, even the lowest treatment intensity of 180 kJ/kgMLSS induced a 12% increase in sludge volume index (SVI). Glow discharge plasma on the other hand, improved settleability up to 51%. Glow discharge plasma and ultrasound both positively affect the carbon removal rate. On the long term, extreme conditions even gave rise to a maximum improvement in respiration by 58.6% and 176.5% for a glow discharge plasma and ultrasound treatment. Nitrification, however, was never positively influenced by either of the treatments. Starting from 8297 kJ/kgMLSS for glow discharge plasma and 9000 kJ/kgMLSS for ultrasound, a negative effect on the nitrification rate was found.
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Affiliation(s)
- Nina Van de Moortel
- KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860 Sint-Katelijne-Waver, Belgium
| | - Rob Van den Broeck
- KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860 Sint-Katelijne-Waver, Belgium
| | - Jan Degrève
- KU Leuven, Department of Chemical Engineering, Bio- & Chemical Systems Technology, Reactor Engineering and Safety, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Raf Dewil
- KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860 Sint-Katelijne-Waver, Belgium.
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73
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Canal C, Fontelo R, Hamouda I, Guillem-Marti J, Cvelbar U, Ginebra MP. Plasma-induced selectivity in bone cancer cells death. Free Radic Biol Med 2017; 110:72-80. [PMID: 28571751 DOI: 10.1016/j.freeradbiomed.2017.05.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 05/23/2017] [Accepted: 05/27/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Current therapies for bone cancers - either primary or metastatic - are difficult to implement and unfortunately not completely effective. An alternative therapy could be found in cold plasmas generated at atmospheric pressure which have already demonstrated selective anti-tumor action in a number of carcinomas and in more relatively rare brain tumors. However, its effects on bone cancer are still unknown. METHODS Herein, we employed an atmospheric pressure plasma jet (APPJ) to validate its selectivity towards osteosarcoma cell line vs. osteoblasts & human mesenchymal stem cells. RESULTS Cytotoxicity following direct interaction of APPJ with cells is comparable to indirect interaction when only liquid medium is treated and subsequently added to the cells, especially on the long-term (72h of cell culture). Moreover, following contact of the APPJ treated medium with cells, delayed effects are observed which lead to 100% bone cancer cell death through apoptosis (decreased cell viability with incubation time in contact with APPJ treated medium from 24h to 72h), while healthy cells remain fully viable and unaffected by the treatment. CONCLUSIONS The high efficiency of the indirect treatment indicates that an important role is played by the reactive oxygen species (ROS) and reactive nitrogen species (RNS) in the gaseous plasma stage and then transmitted to the liquid phase, which overall lead to lethal and selective action towards osteosarcoma cells. These findings open new pathways for treatment of metastatic bone disease with a minimally invasive approach.
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Affiliation(s)
- Cristina Canal
- Biomaterials, Biomechanics and Tissue Engineering Group, Dpt. Materials Science and Metallurgy, Technical University of Catalonia (UPC), c. Eduard Maristany 10-14, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain.
| | - Raul Fontelo
- Biomaterials, Biomechanics and Tissue Engineering Group, Dpt. Materials Science and Metallurgy, Technical University of Catalonia (UPC), c. Eduard Maristany 10-14, 08019 Barcelona, Spain
| | - Ines Hamouda
- Biomaterials, Biomechanics and Tissue Engineering Group, Dpt. Materials Science and Metallurgy, Technical University of Catalonia (UPC), c. Eduard Maristany 10-14, 08019 Barcelona, Spain
| | - Jordi Guillem-Marti
- Biomaterials, Biomechanics and Tissue Engineering Group, Dpt. Materials Science and Metallurgy, Technical University of Catalonia (UPC), c. Eduard Maristany 10-14, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - Uros Cvelbar
- Department of Surface Engineering and Optoelectronics (F-4), Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Dpt. Materials Science and Metallurgy, Technical University of Catalonia (UPC), c. Eduard Maristany 10-14, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain; Institute for Bioengineering of Catalonia, c/ Baldiri i Reixach 10-12, 08028 Barcelona, Spain
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74
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Salminen K, Grönroos P, Tuomi S, Kulmala S. Cathodic electrogenerated chemiluminescence of aromatic Tb(III) chelates at polystyrene-graphite composite electrodes. Anal Chim Acta 2017; 985:54-60. [DOI: 10.1016/j.aca.2017.07.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 07/04/2017] [Accepted: 07/12/2017] [Indexed: 11/27/2022]
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75
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Rumbach P, Clarke JP, Go DB. Electrostatic Debye layer formed at a plasma-liquid interface. Phys Rev E 2017; 95:053203. [PMID: 28618615 DOI: 10.1103/physreve.95.053203] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Indexed: 11/07/2022]
Abstract
We construct an analytic model for the electrostatic Debye layer formed at a plasma-liquid interface by combining the Gouy-Chapman theory for the liquid with a simple parabolic band model for the plasma sheath. The model predicts a nonlinear scaling between the plasma current density and the solution ionic strength, and we confirmed this behavior with measurements using a liquid-anode plasma. Plots of the measured current density as a function of ionic strength collapse the data and curve fits yield a plasma electron density of ∼10^{19}m^{-3} and an electric field of ∼10^{4}V/m on the liquid side of the interface. Because our theory is based firmly on fundamental physics, we believe it can be widely applied to many emerging technologies involving the interaction of low-temperature, nonequilibrium plasma with aqueous media, including plasma medicine and various plasma chemical synthesis techniques.
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Affiliation(s)
- Paul Rumbach
- Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Jean Pierre Clarke
- Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - David B Go
- Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA.,Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
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76
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Rumbach P, Go DB. Perspectives on Plasmas in Contact with Liquids for Chemical Processing and Materials Synthesis. Top Catal 2017. [DOI: 10.1007/s11244-017-0745-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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77
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Safety aspects of atmospheric pressure helium plasma jet operation on skin: In vivo study on mouse skin. PLoS One 2017; 12:e0174966. [PMID: 28379998 PMCID: PMC5381889 DOI: 10.1371/journal.pone.0174966] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 03/17/2017] [Indexed: 12/13/2022] Open
Abstract
Biomedical applications of plasma require its efficacy for specific purposes and equally importantly its safety. Herein the safety aspects of cold plasma created with simple atmospheric pressure plasma jet produced with helium gas and electrode discharge are evaluated in skin damage on mouse, at different duration of exposure and gas flow rates. The extent of skin damage and treatments are systematically evaluated using stereomicroscope, labelling with fluorescent dyes, histology, infrared imaging and optical emission spectroscopy. The analyses reveal early and late skin damages as a consequence of plasma treatment, and are attributed to direct and indirect effects of plasma. The results indicate that direct skin damage progresses with longer treatment time and increasing gas flow rates which reflect changes in plasma properties. With increasing flow rates, the temperature on treated skin grows and the RONS formation rises. The direct effects were plasma treatment dependent, whereas the disclosed late—secondary effects were more independent on discharge parameters and related to diffusion of RONS species. Thermal effects and skin heating are related to plasma-coupling properties and are separated from the effects of other RONS. It is demonstrated that cumulative topical treatment with helium plasma jet could lead to skin damage. How these damages can be mitigated is discussed in order to provide guidance, when using atmospheric pressure plasma jets for skin treatments.
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78
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Ghosh S, Klek E, Zorman CA, Sankaran RM. Microplasma-Induced in Situ Formation of Patterned, Stretchable Electrical Conductors. ACS Macro Lett 2017; 6:194-199. [PMID: 35650912 DOI: 10.1021/acsmacrolett.6b00919] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report a microplasma-based process to fabricate stretchable, electrically conductive metal patterns from metal-cation containing polymers. The technique is compatible with prestraining strategies, allowing films to remain conductive with almost no drop in resistance up to 35% strain. We show that the stretchability of the films is related to uniform strain delocalization which is made possible by how the metallized layer is formed in situ, growing from within the polymer matrix rather than by deposition, to create a quasi-monolithic structure without a well-defined metal-polymer interfacial boundary.
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Affiliation(s)
- Souvik Ghosh
- Department of Chemical and Biomolecular Engineering and ‡Department of Electrical Engineering
and Computer Science, Case Western Reserve University, Cleveland, Ohio, United States
| | - Erika Klek
- Department of Chemical and Biomolecular Engineering and ‡Department of Electrical Engineering
and Computer Science, Case Western Reserve University, Cleveland, Ohio, United States
| | - Christian A. Zorman
- Department of Chemical and Biomolecular Engineering and ‡Department of Electrical Engineering
and Computer Science, Case Western Reserve University, Cleveland, Ohio, United States
| | - R. Mohan Sankaran
- Department of Chemical and Biomolecular Engineering and ‡Department of Electrical Engineering
and Computer Science, Case Western Reserve University, Cleveland, Ohio, United States
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79
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Maguire P, Rutherford D, Macias-Montero M, Mahony C, Kelsey C, Tweedie M, Pérez-Martin F, McQuaid H, Diver D, Mariotti D. Continuous In-Flight Synthesis for On-Demand Delivery of Ligand-Free Colloidal Gold Nanoparticles. NANO LETTERS 2017; 17:1336-1343. [PMID: 28139927 DOI: 10.1021/acs.nanolett.6b03440] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We demonstrate an entirely new method of nanoparticle chemical synthesis based on liquid droplet irradiation with ultralow (<0.1 eV) energy electrons. While nanoparticle formation via high energy radiolysis or transmission electron microscopy-based electron bombardment is well-understood, we have developed a source of electrons with energies close to thermal which leads to a number of important and unique benefits. The charged species, including the growing nanoparticles, are held in an ultrathin surface reaction zone which enables extremely rapid precursor reduction. In a proof-of-principle demonstration, we obtain small-diameter Au nanoparticles (∼4 nm) with tight control of polydispersity, in under 150 μs. The precursor was almost completely reduced in this period, and the resultant nanoparticles were water-soluble and free of surfactant or additional ligand chemistry. Nanoparticle synthesis rates within the droplets were many orders of magnitude greater than equivalent rates reported for radiolysis, electron beam irradiation, or colloidal chemical synthesis where reaction times vary from seconds to hours. In our device, a stream of precursor loaded microdroplets, ∼15 μm in diameter, were transported rapidly through a cold atmospheric pressure plasma with a high charge concentration. A high electron flux, electron and nanoparticle confinement at the surface of the droplet, and the picoliter reactor volume are thought to be responsible for the remarkable enhancement in nanoparticle synthesis rates. While this approach exhibits considerable potential for scale-up of synthesis rates, it also offers the more immediate prospect of continuous on-demand delivery of high-quality nanomaterials directly to their point of use by avoiding the necessity of collection, recovery, and purification. A range of new applications can be envisaged, from theranostics and biomedical imaging in tissue to inline catalyst production for pollution remediation in automobiles.
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Affiliation(s)
- Paul Maguire
- NIBEC, University of Ulster , Belfast, BT37 0QB, Northern Ireland
| | - David Rutherford
- NIBEC, University of Ulster , Belfast, BT37 0QB, Northern Ireland
| | | | - Charles Mahony
- NIBEC, University of Ulster , Belfast, BT37 0QB, Northern Ireland
| | - Colin Kelsey
- NIBEC, University of Ulster , Belfast, BT37 0QB, Northern Ireland
| | - Mark Tweedie
- NIBEC, University of Ulster , Belfast, BT37 0QB, Northern Ireland
| | | | - Harold McQuaid
- NIBEC, University of Ulster , Belfast, BT37 0QB, Northern Ireland
| | - Declan Diver
- SUPA, School of Physics and Astronomy, University of Glasgow , Glasgow G12 8QQ, United Kingdom
| | - Davide Mariotti
- NIBEC, University of Ulster , Belfast, BT37 0QB, Northern Ireland
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80
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Liu X, Liu Z, Zhu Z, He D, Yao S, Zheng H, Hu S. Generation of Volatile Cadmium and Zinc Species Based on Solution Anode Glow Discharge Induced Plasma Electrochemical Processes. Anal Chem 2017; 89:3739-3746. [DOI: 10.1021/acs.analchem.7b00126] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xing Liu
- State
Key Laboratory of Biogeology and Environmental Geology, School of
Earth Sciences, China University of Geosciences, Wuhan, Hubei 430074, China
| | - Zhifu Liu
- State
Key Laboratory of Biogeology and Environmental Geology, School of
Earth Sciences, China University of Geosciences, Wuhan, Hubei 430074, China
| | - Zhenli Zhu
- State
Key Laboratory of Biogeology and Environmental Geology, School of
Earth Sciences, China University of Geosciences, Wuhan, Hubei 430074, China
| | - Dong He
- State
Key Laboratory of Biogeology and Environmental Geology, School of
Earth Sciences, China University of Geosciences, Wuhan, Hubei 430074, China
| | - Siqi Yao
- State
Key Laboratory of Biogeology and Environmental Geology, School of
Earth Sciences, China University of Geosciences, Wuhan, Hubei 430074, China
| | - Hongtao Zheng
- State
Key Laboratory of Biogeology and Environmental Geology, Faculty of
Materials Science and Chemistry, China University of Geosciences, Wuhan, Hubei 430074, China
| | - Shenghong Hu
- State
Key Laboratory of Biogeology and Environmental Geology, School of
Earth Sciences, China University of Geosciences, Wuhan, Hubei 430074, China
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81
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Stratton GR, Dai F, Bellona CL, Holsen TM, Dickenson ERV, Mededovic Thagard S. Plasma-Based Water Treatment: Efficient Transformation of Perfluoroalkyl Substances in Prepared Solutions and Contaminated Groundwater. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:1643-1648. [PMID: 28080043 DOI: 10.1021/acs.est.6b04215] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A process based on electrical discharge plasma was tested for the transformation of perfluorooctanoic acid (PFOA). The plasma-based process was adapted for two cases, high removal rate and high removal efficiency. During a 30 min treatment, the PFOA concentration in 1.4 L of aqueous solutions was reduced by 90% with the high rate process (76.5 W input power) and 25% with the high efficiency process (4.1 W input power). Both achieved remarkably high PFOA removal and defluorination efficiencies compared to leading alternative technologies. The high efficiency process was also used to treat groundwater containing PFOA and several cocontaminants including perfluorooctanesulfonate (PFOS), demonstrating that the process was not significantly affected by cocontaminants and that the process was capable of rapidly degrading PFOS. Preliminary investigation into the byproducts showed that only about 10% of PFOA and PFOS is converted into shorter-chain perfluoroalkyl acids (PFAAs). Investigation into the types of reactive species involved in primary reactions with PFOA showed that hydroxyl and superoxide radicals, which are typically the primary plasma-derived reactive species, play no significant role. Instead, scavenger experiments indicated that aqueous electrons account for a sizable fraction of the transformation, with free electrons and/or argon ions proposed to account for the remainder.
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Affiliation(s)
| | | | - Christopher L Bellona
- Department of Civil and Environmental Engineering, Colorado School of Mines , Golden, Colorado 80401, United States
| | | | - Eric R V Dickenson
- Southern Nevada Water Authority, Water Quality Research and Development Division, Henderson, Nevada 89015, United States
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82
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Jones DB, Raston C. Improving oxidation efficiency through plasma coupled thin film processing. RSC Adv 2017. [DOI: 10.1039/c7ra09559g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Plasma liquid processing efficiency improves by reducing the liquid film thickness.
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Affiliation(s)
- Darryl B. Jones
- Centre for NanoScale Science and Technology
- College of Science and Engineering
- Flinders University
- Adelaide
- Australia
| | - Colin L. Raston
- Centre for NanoScale Science and Technology
- College of Science and Engineering
- Flinders University
- Adelaide
- Australia
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83
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Gorbanev Y, Leifert D, Studer A, O'Connell D, Chechik V. Initiating radical reactions with non-thermal plasmas. Chem Commun (Camb) 2017; 53:3685-3688. [DOI: 10.1039/c7cc01157a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Non-thermal plasmas initiate radical chain reactions under mild conditions without the need for any added initiators.
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Affiliation(s)
- Yury Gorbanev
- Department of Chemistry
- University of York
- York YO10 5DD
- UK
- York Plasma Institute
| | - Dirk Leifert
- Organic Chemistry Institute
- University of Münster
- Münster
- Germany
| | - Armido Studer
- Organic Chemistry Institute
- University of Münster
- Münster
- Germany
| | - Deborah O'Connell
- York Plasma Institute
- Department of Physics
- University of York
- York YO10 5DD
- UK
| | - Victor Chechik
- Department of Chemistry
- University of York
- York YO10 5DD
- UK
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84
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Stabilizer-free silver nanoparticles as efficient catalysts for electrochemical reduction of oxygen. J Colloid Interface Sci 2016; 491:358-366. [PMID: 28056445 DOI: 10.1016/j.jcis.2016.12.053] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/20/2016] [Accepted: 12/22/2016] [Indexed: 11/20/2022]
Abstract
In this work we demonstrated the potential of the He+5% H2+1% N2 plasma jet treatment for the synthesis of surfactant-free silver nanoparticles (Ag NPs) with narrow size distribution. The obtained colloidal solutions of electrostatically stabilized Ag NPs do not show any agglomeration for several months. Apart from an atomic thin oxide layer and the relatively weakly bound OH- ions, the surface of Ag NPs can be considered as stabilizer-free. The surface charge (characterized by the zeta potential) of Ag NPs in solution was measured by electrophoretic light scattering technique. Plasmonic band position and width in the UV/VIS extinction spectra was utilized for the assessment of Ag NPs size distribution. Highly concentrated Ag NPs were uniformly deposited on the surface of the glassy carbon (GC) electrodes by vacuum-drying technique. The deposition process was monitored with a digital camera attached to a microscope. The assemblies of Ag NPs on the electrode surface were characterized by scanning electron microscopy. The Ag NP/GC catalysts were electrochemically tested in alkaline solution using the rotating disk electrode method. The Ag NP/GC electrodes exhibited high electrocatalytic activity toward the oxygen reduction reaction (ORR) in 0.1M KOH solution, indicating their potential applicability as cathode materials for alkaline fuel cells.
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85
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Liu J, He B, Chen Q, Li J, Xiong Q, Yue G, Zhang X, Yang S, Liu H, Liu QH. Direct synthesis of hydrogen peroxide from plasma-water interactions. Sci Rep 2016; 6:38454. [PMID: 27917925 PMCID: PMC5137161 DOI: 10.1038/srep38454] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 11/09/2016] [Indexed: 11/09/2022] Open
Abstract
Hydrogen peroxide (H2O2) is usually considered to be an important reagent in green chemistry since water is the only by-product in H2O2 involved oxidation reactions. Early studies show that direct synthesis of H2O2 by plasma-water interactions is possible, while the factors affecting the H2O2 production in this method remain unclear. Herein, we present a study on the H2O2 synthesis by atmospheric pressure plasma-water interactions. The results indicate that the most important factors for the H2O2 production are the processes taking place at the plasma-water interface, including sputtering, electric field induced hydrated ion emission, and evaporation. The H2O2 production rate reaches ~1200 μmol/h when the liquid cathode is purified water or an aqueous solution of NaCl with an initial conductivity of 10500 μS cm−1.
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Affiliation(s)
- Jiandi Liu
- Institute of Electromagnetics and Acoustics, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China
| | - Bangbang He
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Department of Electronic Science, Xiamen University, Xiamen 361005, China
| | - Qiang Chen
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Department of Electronic Science, Xiamen University, Xiamen 361005, China
| | - Junshuai Li
- Key Laboratory of Special Function Materials &Structure Design of the Ministry of Education, Key Laboratory for Magnetism &Magnetic Materials of the Ministry of Education, and School of Physical Science &Technology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Qing Xiong
- State Key Laboratory of Power Transmission Equipment &System Security and New Technology, Chongqing University, Chongqing 400044, China
| | - Guanghui Yue
- Department of Materials Science and Engineering, College of materials, Xiamen University, Xiamen 361005, China
| | - Xianhui Zhang
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Department of Electronic Science, Xiamen University, Xiamen 361005, China
| | - Size Yang
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Department of Electronic Science, Xiamen University, Xiamen 361005, China
| | - Hai Liu
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Department of Electronic Science, Xiamen University, Xiamen 361005, China
| | - Qing Huo Liu
- Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
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86
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Liu J, He B, Chen Q, Liu H, Li J, Xiong Q, Zhang X, Yang S, Yue G, Liu QH. Plasma electrochemical synthesis of cuprous oxide nanoparticles and their visible-light photocatalytic effect. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.11.158] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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87
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Recek N, Andjelić S, Hojnik N, Filipič G, Lazović S, Vesel A, Primc G, Mozetič M, Hawlina M, Petrovski G, Cvelbar U. Microplasma Induced Cell Morphological Changes and Apoptosis of Ex Vivo Cultured Human Anterior Lens Epithelial Cells - Relevance to Capsular Opacification. PLoS One 2016; 11:e0165883. [PMID: 27832099 PMCID: PMC5104483 DOI: 10.1371/journal.pone.0165883] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 10/19/2016] [Indexed: 11/18/2022] Open
Abstract
Inducing selective or targeted cell apoptosis without affecting large number of neighbouring cells remains a challenge. A plausible method for treatment of posterior capsular opacification (PCO) due to remaining lens epithelial cells (LECs) by reactive chemistry induced by localized single electrode microplasma discharge at top of a needle-like glass electrode with spot size ~3 μm is hereby presented. The focused and highly-localized atmospheric pressure microplasma jet with electrode discharge could induce a dose-dependent apoptosis in selected and targeted individual LECs, which could be confirmed by real-time monitoring of the morphological and structural changes at cellular level. Direct cell treatment with microplasma inside the medium appeared more effective in inducing apoptosis (caspase 8 positivity and DNA fragmentation) at a highly targeted cell level compared to treatment on top of the medium (indirect treatment). Our results show that single cell specific micropipette plasma can be used to selectively induce demise in LECs which remain in the capsular bag after cataract surgery and thus prevent their migration (CXCR4 positivity) to the posterior lens capsule and PCO formation.
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Affiliation(s)
- Nina Recek
- Department of Surface Engineering and Optoelectronics (F4), Jožef Stefan Institute, Ljubljana, Slovenia
| | - Sofija Andjelić
- Eye Hospital, University Medical Centre, Ljubljana, Slovenia
- * E-mail:
| | - Nataša Hojnik
- Department of Surface Engineering and Optoelectronics (F4), Jožef Stefan Institute, Ljubljana, Slovenia
| | - Gregor Filipič
- Department of Surface Engineering and Optoelectronics (F4), Jožef Stefan Institute, Ljubljana, Slovenia
| | - Saša Lazović
- Institute of Physics Belgrade, University of Belgrade, Belgrade, Serbia
| | - Alenka Vesel
- Department of Surface Engineering and Optoelectronics (F4), Jožef Stefan Institute, Ljubljana, Slovenia
| | - Gregor Primc
- Department of Surface Engineering and Optoelectronics (F4), Jožef Stefan Institute, Ljubljana, Slovenia
| | - Miran Mozetič
- Department of Surface Engineering and Optoelectronics (F4), Jožef Stefan Institute, Ljubljana, Slovenia
| | - Marko Hawlina
- Eye Hospital, University Medical Centre, Ljubljana, Slovenia
| | - Goran Petrovski
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
- Centre of Eye Research, Department of Ophthalmology, Oslo University Hospital, University of Oslo, Oslo, Norway
| | - Uroš Cvelbar
- Department of Surface Engineering and Optoelectronics (F4), Jožef Stefan Institute, Ljubljana, Slovenia
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88
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Nowakowski PJ, Woods DA, Verlet JRR. Charge Transfer to Solvent Dynamics at the Ambient Water/Air Interface. J Phys Chem Lett 2016; 7:4079-4085. [PMID: 27684095 DOI: 10.1021/acs.jpclett.6b01985] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Electron-transfer reactions at ambient aqueous interfaces represent one of the most fundamental and ubiquitous chemical reactions. Here the dynamics of the charge transfer to solvent (CTTS) reaction from iodide was probed at the ambient water/air interface by phase-sensitive transient second-harmonic generation. Using the three allowed polarization combinations, distinctive dynamics assigned to the CTTS state evolution and to the subsequent solvating electron-iodine contact pair have been resolved. The CTTS state is asymmetrically solvated in the plane of the surface, while the subsequent electron solvation dynamics are very similar to those observed in the bulk, although slightly faster. Between 3 and 30 ps, a small phase shift distinguishes an electron bound in a contact pair with iodine and a free hydrated electron at the water/air interface. Our results suggest that the hydrated electron is fully solvated in a region of reduced water density at the interface.
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Affiliation(s)
- Paweł J Nowakowski
- Department of Chemistry, University of Durham , Durham DH1 3LE, United Kingdom
| | - David A Woods
- Department of Chemistry, University of Durham , Durham DH1 3LE, United Kingdom
| | - Jan R R Verlet
- Department of Chemistry, University of Durham , Durham DH1 3LE, United Kingdom
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89
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Bruggeman PJ, Kushner MJ, Locke BR, Gardeniers JGE, Graham WG, Graves DB, Hofman-Caris RCHM, Maric D, Reid JP, Ceriani E, Fernandez Rivas D, Foster JE, Garrick SC, Gorbanev Y, Hamaguchi S, Iza F, Jablonowski H, Klimova E, Kolb J, Krcma F, Lukes P, Machala Z, Marinov I, Mariotti D, Mededovic Thagard S, Minakata D, Neyts EC, Pawlat J, Petrovic ZL, Pflieger R, Reuter S, Schram DC, Schröter S, Shiraiwa M, Tarabová B, Tsai PA, Verlet JRR, von Woedtke T, Wilson KR, Yasui K, Zvereva G. Plasma–liquid interactions: a review and roadmap. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/0963-0252/25/5/053002] [Citation(s) in RCA: 917] [Impact Index Per Article: 114.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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90
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Zhou R, Zhou R, Zhang X, Zhuang J, Yang S, Bazaka K, Ken Ostrikov K. Effects of Atmospheric-Pressure N2, He, Air, and O2 Microplasmas on Mung Bean Seed Germination and Seedling Growth. Sci Rep 2016; 6:32603. [PMID: 27584560 PMCID: PMC5007987 DOI: 10.1038/srep32603] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 08/10/2016] [Indexed: 01/25/2023] Open
Abstract
Atmospheric-pressure N2, He, air, and O2 microplasma arrays have been used to investigate the effects of plasma treatment on seed germination and seedling growth of mung bean in aqueous solution. Seed germination and growth of mung bean were found to strongly depend on the feed gases used to generate plasma and plasma treatment time. Compared to the treatment with atmospheric-pressure O2, N2 and He microplasma arrays, treatment with air microplasma arrays was shown to be more efficient in improving both the seed germination rate and seedling growth, the effect attributed to solution acidification and interactions with plasma-generated reactive oxygen and nitrogen species. Acidic environment caused by air discharge in water may promote leathering of seed chaps, thus enhancing the germination rate of mung bean, and stimulating the growth of hypocotyl and radicle. The interactions between plasma-generated reactive species, such as hydrogen peroxide (H2O2) and nitrogen compounds, and seeds led to a significant acceleration of seed germination and an increase in seedling length of mung bean. Electrolyte leakage rate of mung bean seeds soaked in solution activated using air microplasma was the lowest, while the catalase activity of thus-treated mung bean seeds was the highest compared to other types of microplasma.
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Affiliation(s)
- Renwu Zhou
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4000, Australia.,Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics Science and Technology, Xiamen University, Xiamen 361005, China
| | - Rusen Zhou
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xianhui Zhang
- Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics Science and Technology, Xiamen University, Xiamen 361005, China
| | - Jinxing Zhuang
- Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics Science and Technology, Xiamen University, Xiamen 361005, China
| | - Size Yang
- Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics Science and Technology, Xiamen University, Xiamen 361005, China
| | - Kateryna Bazaka
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4000, Australia.,CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P. O. Box 218, Lindfield, NSW 2070, Australia
| | - Kostya Ken Ostrikov
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4000, Australia.,CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P. O. Box 218, Lindfield, NSW 2070, Australia
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91
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Rumbach P, Bartels DM, Sankaran RM, Go DB. Corrigendum: The solvation of electrons by an atmospheric-pressure plasma. Nat Commun 2016; 7:11911. [PMID: 27264961 PMCID: PMC4897737 DOI: 10.1038/ncomms11911] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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92
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Setsuhara Y. Low-temperature atmospheric-pressure plasma sources for plasma medicine. Arch Biochem Biophys 2016; 605:3-10. [PMID: 27109191 DOI: 10.1016/j.abb.2016.04.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 03/31/2016] [Accepted: 04/19/2016] [Indexed: 10/21/2022]
Abstract
In this review paper, fundamental overviews of low-temperature atmospheric-pressure plasma generation are provided and various sources for plasma medicine are described in terms of operating conditions and plasma properties.
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Affiliation(s)
- Yuichi Setsuhara
- Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka, Japan.
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93
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Liu DX, Liu ZC, Chen C, Yang AJ, Li D, Rong MZ, Chen HL, Kong MG. Aqueous reactive species induced by a surface air discharge: Heterogeneous mass transfer and liquid chemistry pathways. Sci Rep 2016; 6:23737. [PMID: 27033381 PMCID: PMC4817137 DOI: 10.1038/srep23737] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 03/14/2016] [Indexed: 01/18/2023] Open
Abstract
Plasma-liquid interaction is a critical area of plasma science and a knowledge bottleneck for many promising applications. In this paper, the interaction between a surface air discharge and its downstream sample of deionized water is studied with a system-level computational model, which has previously reached good agreement with experimental results. Our computational results reveal that the plasma-induced aqueous species are mainly H(+), nitrate, nitrite, H2O2 and O3. In addition, various short-lived aqueous species are also induced, regardless whether they are generated in the gas phase first. The production/loss pathways for aqueous species are quantified for an air gap width ranging from 0.1 to 2 cm, of which heterogeneous mass transfer and liquid chemistry are found to play a dominant role. The short-lived reactive oxygen species (ROS) and reactive nitrogen species (RNS) are strongly coupled in liquid-phase reactions: NO3 is an important precursor for short-lived ROS, and in turn OH, O2(-) and HO2 play a crucial role for the production of short-lived RNS. Also, heterogeneous mass transfer depends strongly on the air gap width, resulting in two distinct scenarios separated by a critical air gap of 0.5 cm. The liquid chemistry is significantly different in these two scenarios.
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Affiliation(s)
- D. X. Liu
- State Key Lab of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Shaanxi, P R China
| | - Z. C. Liu
- State Key Lab of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Shaanxi, P R China
| | - C. Chen
- State Key Lab of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Shaanxi, P R China
| | - A. J. Yang
- State Key Lab of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Shaanxi, P R China
| | - D. Li
- State Key Lab of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Shaanxi, P R China
| | - M. Z. Rong
- State Key Lab of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Shaanxi, P R China
| | - H. L. Chen
- Frank Reidy Center for Bioelectrics, Old Dominion University, Norfolk, Virginia 23508, USA
| | - M. G. Kong
- State Key Lab of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Shaanxi, P R China
- Frank Reidy Center for Bioelectrics, Old Dominion University, Norfolk, Virginia 23508, USA
- Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia 23529, USA
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94
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Joslin JM, McCall JR, Bzdek JP, Johnson DC, Hybertson BM. Aqueous Plasma Pharmacy: Preparation Methods, Chemistry, and Therapeutic Applications. PLASMA MEDICINE 2016; 6:135-177. [PMID: 28428835 DOI: 10.1615/plasmamed.2016018618] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Plasma pharmacy is a subset of the broader field of plasma medicine. Although not strictly defined, the term aqueous plasma pharmacy (APP) is used to refer to the generation and distribution of reactive plasma-generated species in an aqueous solution followed by subsequent administration for therapeutic benefits. APP attempts to harness the therapeutic effects of plasma-generated oxidant species within aqueous solution in various applications, such as disinfectant solutions, cell proliferation related to wound healing, and cancer treatment. The subsequent use of plasma-generated solutions in the APP approach facilitates the delivery of reactive plasma species to internal locations within the body. Although significant efforts in the field of plasma medicine have concentrated on employing direct plasma plume exposure to cells or tissues, here we focus specifically on plasma discharge in aqueous solution to render the solution biologically active for subsequent application. Methods of plasma discharge in solution are reviewed, along with aqueous plasma chemistry and the applications for APP. The future of the field also is discussed regarding necessary research efforts that will enable commercialization for clinical deployment.
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Affiliation(s)
- Jessica M Joslin
- Symbios Technologies, Inc., 3185 Rampart Road, Bldg. A, Colorado State University Research Innovation Center, Fort Collins, CO 80523
| | - James R McCall
- Symbios Technologies, Inc., 3185 Rampart Road, Bldg. A, Colorado State University Research Innovation Center, Fort Collins, CO 80523
| | - Justin P Bzdek
- Symbios Technologies, Inc., 3185 Rampart Road, Bldg. A, Colorado State University Research Innovation Center, Fort Collins, CO 80523
| | - Derek C Johnson
- Symbios Technologies, Inc., 3185 Rampart Road, Bldg. A, Colorado State University Research Innovation Center, Fort Collins, CO 80523
| | - Brooks M Hybertson
- Symbios Technologies, Inc., 3185 Rampart Road, Bldg. A, Colorado State University Research Innovation Center, Fort Collins, CO 80523.,Department of Medicine, Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
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95
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Enhanced Dispersion of TiO2 Nanoparticles in a TiO2/PEDOT:PSS Hybrid Nanocomposite via Plasma-Liquid Interactions. Sci Rep 2015; 5:15765. [PMID: 26497265 PMCID: PMC4620561 DOI: 10.1038/srep15765] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 09/29/2015] [Indexed: 01/14/2023] Open
Abstract
A facile method to synthesize a TiO2/PEDOT:PSS hybrid nanocomposite material in aqueous solution through direct current (DC) plasma processing at atmospheric pressure and room temperature has been demonstrated. The dispersion of the TiO2 nanoparticles is enhanced and TiO2/polymer hybrid nanoparticles with a distinct core shell structure have been obtained. Increased electrical conductivity was observed for the plasma treated TiO2/PEDOT:PSS nanocomposite. The improvement in nanocomposite properties is due to the enhanced dispersion and stability in liquid polymer of microplasma treated TiO2 nanoparticles. Both plasma induced surface charge and nanoparticle surface termination with specific plasma chemical species are proposed to provide an enhanced barrier to nanoparticle agglomeration and promote nanoparticle-polymer binding.
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